strip non-essential data from redis cache txs

store redis mempool in sharded json object
Add network and schema versioning to redis cache
2023-07-25 16:35:21 +09:00 · 2023-07-25 16:12:39 +09:00 · 2023-07-25 16:12:39 +09:00 · 2023-07-25 16:12:38 +09:00 · 2023-07-25 16:12:38 +09:00 · 2023-07-25 16:12:38 +09:00
228 changed files with 20405 additions and 9601 deletions
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -7,7 +7,8 @@ updates:
    open-pull-requests-limit: 10
    ignore:
      - dependency-name: "*"
-        update-types: ["version-update:semver-major"]
+        update-types:
+          ["version-update:semver-major", "version-update:semver-patch"]
    allow:
      - dependency-type: "production"

@@ -18,7 +19,8 @@ updates:
    open-pull-requests-limit: 10
    ignore:
      - dependency-name: "*"
-        update-types: ["version-update:semver-major"]
+        update-types:
+          ["version-update:semver-major", "version-update:semver-patch"]
    allow:
      - dependency-type: "production"

@@ -28,7 +30,8 @@ updates:
      interval: weekly
    ignore:
      - dependency-name: "*"
-        update-types: ["version-update:semver-major"]
+        update-types:
+          ["version-update:semver-major", "version-update:semver-patch"]

  - package-ecosystem: docker
    directory: "/docker/frontend"
@@ -36,7 +39,8 @@ updates:
      interval: weekly
    ignore:
      - dependency-name: "*"
-        update-types: ["version-update:semver-major"]
+        update-types:
+          ["version-update:semver-major", "version-update:semver-patch"]

  - package-ecosystem: "github-actions"
    directory: "/"
@@ -44,4 +48,5 @@ updates:
      interval: weekly
    ignore:
      - dependency-name: "*"
-        update-types: ["version-update:semver-major"]
+        update-types:
+          ["version-update:semver-major", "version-update:semver-patch"]
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,7 +9,7 @@ jobs:
    if: "!contains(github.event.pull_request.labels.*.name, 'ops') && !contains(github.head_ref, 'ops/')"
    strategy:
      matrix:
-        node: ["16", "17", "18"]
+        node: ["16", "17", "18", "20"]
        flavor: ["dev", "prod"]
      fail-fast: false
    runs-on: "ubuntu-latest"
@@ -27,6 +27,9 @@ jobs:
          node-version: ${{ matrix.node }}
          registry-url: "https://registry.npmjs.org"

+      - name: Install 1.70.x Rust toolchain
+        uses: dtolnay/rust-toolchain@1.70
+
      - name: Install
        if: ${{ matrix.flavor == 'dev'}}
        run: npm ci
@@ -55,7 +58,7 @@ jobs:
    if: "!contains(github.event.pull_request.labels.*.name, 'ops') && !contains(github.head_ref, 'ops/')"
    strategy:
      matrix:
-        node: ["16", "17", "18"]
+        node: ["16", "17", "18", "20"]
        flavor: ["dev", "prod"]
      fail-fast: false
    runs-on: "ubuntu-latest"
@@ -94,3 +97,6 @@ jobs:
      - name: Build
        run: npm run build
        working-directory: ${{ matrix.node }}/${{ matrix.flavor }}/frontend
+        env: 
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@ backend/mempool-config.json
 *.swp
 frontend/src/resources/config.template.js
 frontend/src/resources/config.js
+target
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,5 +1,6 @@
 {
  "editor.tabSize": 2,
  "typescript.preferences.importModuleSpecifier": "relative",
-  "typescript.tsdk": "./backend/node_modules/typescript/lib"
+  "typescript.tsdk": "./backend/node_modules/typescript/lib",
+  "rust-analyzer.procMacro.ignored": { "napi-derive": ["napi"] }
 }
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -0,0 +1,533 @@
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+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "91ae572e1b79dba883e0d315474df7305d12f569b400fcf90581b06062f7e1bc"
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2ef27e0d7bdfcfc7b868b317c1d32c641a6fe4629c171b8928c7b08d98d7cf3"
+
+[[package]]
+name = "windows_i686_gnu"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "622a1962a7db830d6fd0a69683c80a18fda201879f0f447f065a3b7467daa241"
+
+[[package]]
+name = "windows_i686_msvc"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4542c6e364ce21bf45d69fdd2a8e455fa38d316158cfd43b3ac1c5b1b19f8e00"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ca2b8a661f7628cbd23440e50b05d705db3686f894fc9580820623656af974b1"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7896dbc1f41e08872e9d5e8f8baa8fdd2677f29468c4e156210174edc7f7b953"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a515f5799fe4961cb532f983ce2b23082366b898e52ffbce459c86f67c8378a"
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -0,0 +1,8 @@
+[workspace]
+members = [
+	"./backend/rust-gbt",
+]
+
+[profile.release]
+lto = true
+codegen-units = 1
--- a/backend/.dockerignore
+++ b/backend/.dockerignore
@@ -0,0 +1 @@
+Dockerfile
--- a/backend/README.md
+++ b/backend/README.md
@@ -2,7 +2,7 @@

 These instructions are mostly intended for developers. 

-If you choose to use these instructions for a production setup, be aware that you will still probably need to do additional configuration for your specific OS, environment, use-case, etc. We do our best here to provide a good starting point, but only proceed if you know what you're doing. Mempool does not provide support for custom setups.
+If you choose to use these instructions for a production setup, be aware that you will still probably need to do additional configuration for your specific OS, environment, use-case, etc. We do our best here to provide a good starting point, but only proceed if you know what you're doing. Mempool only provides support for custom setups to [enterprise sponsors](https://mempool.space/enterprise).

 See other ways to set up Mempool on [the main README](/../../#installation-methods).

@@ -79,6 +79,8 @@ Query OK, 0 rows affected (0.00 sec)

 _Make sure to use Node.js 16.10 and npm 7._

+_The build process requires [Rust](https://www.rust-lang.org/tools/install) to be installed._
+
 Install dependencies with `npm` and build the backend:

 ```
--- a/backend/mempool-config.sample.json
+++ b/backend/mempool-config.sample.json
@@ -27,8 +27,11 @@
    "AUDIT": false,
    "ADVANCED_GBT_AUDIT": false,
    "ADVANCED_GBT_MEMPOOL": false,
+    "RUST_GBT": false,
    "CPFP_INDEXING": false,
-    "DISK_CACHE_BLOCK_INTERVAL": 6
+    "DISK_CACHE_BLOCK_INTERVAL": 6,
+    "MAX_PUSH_TX_SIZE_WEIGHT": 4000000,
+    "ALLOW_UNREACHABLE": true
  },
  "CORE_RPC": {
    "HOST": "127.0.0.1",
@@ -122,5 +125,16 @@
    "LIQUID_ONION": "http://liquidmom47f6s3m53ebfxn47p76a6tlnxib3wp6deux7wuzotdr6cyd.onion/api/v1",
    "BISQ_URL": "https://bisq.markets/api",
    "BISQ_ONION": "http://bisqmktse2cabavbr2xjq7xw3h6g5ottemo5rolfcwt6aly6tp5fdryd.onion/api"
+  },
+  "REPLICATION": {
+    "ENABLED": false,
+    "AUDIT": false,
+    "AUDIT_START_HEIGHT": 774000,
+    "SERVERS": [
+      "list",
+      "of",
+      "trusted",
+      "servers"
+    ]
  }
 }
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
@@ -1,26 +1,27 @@
 {
  "name": "mempool-backend",
-  "version": "2.6.0-dev",
+  "version": "3.0.0-dev",
  "lockfileVersion": 2,
  "requires": true,
  "packages": {
    "": {
      "name": "mempool-backend",
-      "version": "2.6.0-dev",
+      "version": "3.0.0-dev",
      "license": "GNU Affero General Public License v3.0",
      "dependencies": {
        "@babel/core": "^7.21.3",
        "@mempool/electrum-client": "1.1.9",
        "@types/node": "^18.15.3",
-        "axios": "~0.27.2",
-        "bitcoinjs-lib": "~6.1.0",
+        "axios": "~1.4.0",
+        "bitcoinjs-lib": "~6.1.3",
        "crypto-js": "~4.1.1",
        "express": "~4.18.2",
-        "maxmind": "~4.3.8",
-        "mysql2": "~3.2.0",
-        "node-worker-threads-pool": "~1.5.1",
+        "maxmind": "~4.3.11",
+        "mysql2": "~3.5.2",
+        "rust-gbt": "file:./rust-gbt",
+        "redis": "^4.6.6",
        "socks-proxy-agent": "~7.0.0",
-        "typescript": "~4.7.4",
+        "typescript": "~4.9.3",
        "ws": "~8.13.0"
      },
      "devDependencies": {
@@ -28,19 +29,28 @@
        "@babel/core": "^7.21.3",
        "@types/compression": "^1.7.2",
        "@types/crypto-js": "^4.1.1",
-        "@types/express": "^4.17.15",
+        "@types/express": "^4.17.17",
        "@types/jest": "^29.5.0",
-        "@types/ws": "~8.5.4",
+        "@types/ws": "~8.5.5",
        "@typescript-eslint/eslint-plugin": "^5.55.0",
        "@typescript-eslint/parser": "^5.55.0",
        "eslint": "^8.36.0",
-        "eslint-config-prettier": "^8.7.0",
+        "eslint-config-prettier": "^8.8.0",
        "jest": "^29.5.0",
-        "prettier": "^2.8.4",
-        "ts-jest": "^29.0.5",
+        "prettier": "^3.0.0",
+        "ts-jest": "^29.1.1",
        "ts-node": "^10.9.1"
      }
    },
+    "node_modules/@aashutoshrathi/word-wrap": {
+      "version": "1.2.6",
+      "resolved": "https://registry.npmjs.org/@aashutoshrathi/word-wrap/-/word-wrap-1.2.6.tgz",
+      "integrity": "sha512-1Yjs2SvM8TflER/OD3cOjhWWOZb58A2t7wpE2S9XfBYTiIl+XFhQG2bjy4Pu1I+EAlCNUzRDYDdFwFYUKvXcIA==",
+      "dev": true,
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
    "node_modules/@ampproject/remapping": {
      "version": "2.2.0",
      "resolved": "https://registry.npmjs.org/@ampproject/remapping/-/remapping-2.2.0.tgz",
@@ -1485,6 +1495,21 @@
        "node": ">=6"
      }
    },
+    "node_modules/@napi-rs/cli": {
+      "version": "2.16.1",
+      "resolved": "https://registry.npmjs.org/@napi-rs/cli/-/cli-2.16.1.tgz",
+      "integrity": "sha512-L0Gr5iEQIDEbvWdDr1HUaBOxBSHL1VZhWSk1oryawoT8qJIY+KGfLFelU+Qma64ivCPbxYpkfPoKYVG3rcoGIA==",
+      "bin": {
+        "napi": "scripts/index.js"
+      },
+      "engines": {
+        "node": ">= 10"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/Brooooooklyn"
+      }
+    },
    "node_modules/@noble/hashes": {
      "version": "1.3.0",
      "resolved": "https://registry.npmjs.org/@noble/hashes/-/hashes-1.3.0.tgz",
@@ -1531,6 +1556,64 @@
        "node": ">= 8"
      }
    },
+    "node_modules/@redis/bloom": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/@redis/bloom/-/bloom-1.2.0.tgz",
+      "integrity": "sha512-HG2DFjYKbpNmVXsa0keLHp/3leGJz1mjh09f2RLGGLQZzSHpkmZWuwJbAvo3QcRY8p80m5+ZdXZdYOSBLlp7Cg==",
+      "peerDependencies": {
+        "@redis/client": "^1.0.0"
+      }
+    },
+    "node_modules/@redis/client": {
+      "version": "1.5.7",
+      "resolved": "https://registry.npmjs.org/@redis/client/-/client-1.5.7.tgz",
+      "integrity": "sha512-gaOBOuJPjK5fGtxSseaKgSvjiZXQCdLlGg9WYQst+/GRUjmXaiB5kVkeQMRtPc7Q2t93XZcJfBMSwzs/XS9UZw==",
+      "dependencies": {
+        "cluster-key-slot": "1.1.2",
+        "generic-pool": "3.9.0",
+        "yallist": "4.0.0"
+      },
+      "engines": {
+        "node": ">=14"
+      }
+    },
+    "node_modules/@redis/client/node_modules/yallist": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+      "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A=="
+    },
+    "node_modules/@redis/graph": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@redis/graph/-/graph-1.1.0.tgz",
+      "integrity": "sha512-16yZWngxyXPd+MJxeSr0dqh2AIOi8j9yXKcKCwVaKDbH3HTuETpDVPcLujhFYVPtYrngSco31BUcSa9TH31Gqg==",
+      "peerDependencies": {
+        "@redis/client": "^1.0.0"
+      }
+    },
+    "node_modules/@redis/json": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/@redis/json/-/json-1.0.4.tgz",
+      "integrity": "sha512-LUZE2Gdrhg0Rx7AN+cZkb1e6HjoSKaeeW8rYnt89Tly13GBI5eP4CwDVr+MY8BAYfCg4/N15OUrtLoona9uSgw==",
+      "peerDependencies": {
+        "@redis/client": "^1.0.0"
+      }
+    },
+    "node_modules/@redis/search": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@redis/search/-/search-1.1.2.tgz",
+      "integrity": "sha512-/cMfstG/fOh/SsE+4/BQGeuH/JJloeWuH+qJzM8dbxuWvdWibWAOAHHCZTMPhV3xIlH4/cUEIA8OV5QnYpaVoA==",
+      "peerDependencies": {
+        "@redis/client": "^1.0.0"
+      }
+    },
+    "node_modules/@redis/time-series": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/@redis/time-series/-/time-series-1.0.4.tgz",
+      "integrity": "sha512-ThUIgo2U/g7cCuZavucQTQzA9g9JbDDY2f64u3AbAoz/8vE2lt2U37LamDUVChhaDA3IRT9R6VvJwqnUfTJzng==",
+      "peerDependencies": {
+        "@redis/client": "^1.0.0"
+      }
+    },
    "node_modules/@sinclair/typebox": {
      "version": "0.25.24",
      "resolved": "https://registry.npmjs.org/@sinclair/typebox/-/typebox-0.25.24.tgz",
@@ -1778,9 +1861,9 @@
      "dev": true
    },
    "node_modules/@types/ws": {
-      "version": "8.5.4",
-      "resolved": "https://registry.npmjs.org/@types/ws/-/ws-8.5.4.tgz",
-      "integrity": "sha512-zdQDHKUgcX/zBc4GrwsE/7dVdAD8JR4EuiAXiiUhhfyIJXXb2+PrGshFyeXWQPMmmZ2XxgaqclgpIC7eTXc1mg==",
+      "version": "8.5.5",
+      "resolved": "https://registry.npmjs.org/@types/ws/-/ws-8.5.5.tgz",
+      "integrity": "sha512-lwhs8hktwxSjf9UaZ9tG5M03PGogvFaH8gUgLNbN9HKIg0dvv6q+gkSuJ8HN4/VbyxkuLzCjlN7GquQ0gUJfIg==",
      "dev": true,
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        "@types/node": "*"
@@ -1848,9 +1931,9 @@
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    },
    "node_modules/@typescript-eslint/eslint-plugin/node_modules/semver": {
-      "version": "7.3.8",
-      "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.8.tgz",
-      "integrity": "sha512-NB1ctGL5rlHrPJtFDVIVzTyQylMLu9N9VICA6HSFJo8MCGVTMW6gfpicwKmmK/dAjTOrqu5l63JJOpDSrAis3A==",
+      "version": "7.5.4",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-7.5.4.tgz",
+      "integrity": "sha512-1bCSESV6Pv+i21Hvpxp3Dx+pSD8lIPt8uVjRrxAUt/nbswYc+tK6Y2btiULjd4+fnq15PX+nqQDC7Oft7WkwcA==",
      "dev": true,
      "dependencies": {
        "lru-cache": "^6.0.0"
@@ -1992,9 +2075,9 @@
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    },
    "node_modules/@typescript-eslint/typescript-estree/node_modules/semver": {
-      "version": "7.3.8",
-      "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.8.tgz",
-      "integrity": "sha512-NB1ctGL5rlHrPJtFDVIVzTyQylMLu9N9VICA6HSFJo8MCGVTMW6gfpicwKmmK/dAjTOrqu5l63JJOpDSrAis3A==",
+      "version": "7.5.4",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-7.5.4.tgz",
+      "integrity": "sha512-1bCSESV6Pv+i21Hvpxp3Dx+pSD8lIPt8uVjRrxAUt/nbswYc+tK6Y2btiULjd4+fnq15PX+nqQDC7Oft7WkwcA==",
      "dev": true,
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@@ -2051,9 +2134,9 @@
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    },
    "node_modules/@typescript-eslint/utils/node_modules/semver": {
-      "version": "7.3.8",
-      "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.8.tgz",
-      "integrity": "sha512-NB1ctGL5rlHrPJtFDVIVzTyQylMLu9N9VICA6HSFJo8MCGVTMW6gfpicwKmmK/dAjTOrqu5l63JJOpDSrAis3A==",
+      "version": "7.5.4",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-7.5.4.tgz",
+      "integrity": "sha512-1bCSESV6Pv+i21Hvpxp3Dx+pSD8lIPt8uVjRrxAUt/nbswYc+tK6Y2btiULjd4+fnq15PX+nqQDC7Oft7WkwcA==",
      "dev": true,
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@@ -2238,12 +2321,13 @@
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    },
    "node_modules/axios": {
-      "version": "0.27.2",
-      "resolved": "https://registry.npmjs.org/axios/-/axios-0.27.2.tgz",
-      "integrity": "sha512-t+yRIyySRTp/wua5xEr+z1q60QmLq8ABsS5O9Me1AsE5dfKqgnCFzwiCZZ/cGNd1lq4/7akDWMxdhVlucjmnOQ==",
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/axios/-/axios-1.4.0.tgz",
+      "integrity": "sha512-S4XCWMEmzvo64T9GfvQDOXgYRDJ/wsSZc7Jvdgx5u1sd0JwsuPLqb3SYmusag+edF6ziyMensPVqLTSc1PiSEA==",
      "dependencies": {
-        "follow-redirects": "^1.14.9",
-        "form-data": "^4.0.0"
+        "follow-redirects": "^1.15.0",
+        "form-data": "^4.0.0",
+        "proxy-from-env": "^1.1.0"
      }
    },
    "node_modules/babel-jest": {
@@ -2432,9 +2516,9 @@
      }
    },
    "node_modules/bitcoinjs-lib": {
-      "version": "6.1.1",
-      "resolved": "https://registry.npmjs.org/bitcoinjs-lib/-/bitcoinjs-lib-6.1.1.tgz",
-      "integrity": "sha512-FYihfgTk29lt1eK2y48OtuarEDUnTprNBW3ctT8yHiOhvmeS3DzAVG6gI0VCvMkydz6UdlXlYNWIPqGD0SUYRQ==",
+      "version": "6.1.3",
+      "resolved": "https://registry.npmjs.org/bitcoinjs-lib/-/bitcoinjs-lib-6.1.3.tgz",
+      "integrity": "sha512-TYXs/Qf+GNk2nnsB9HrXWqzFuEgCg0Gx+v3UW3B8VuceFHXVvhT+7hRnTSvwkX0i8rz2rtujeU6gFaDcFqYFDw==",
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        "bech32": "^2.0.0",
@@ -2693,6 +2777,14 @@
        "node": ">=12"
      }
    },
+    "node_modules/cluster-key-slot": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/cluster-key-slot/-/cluster-key-slot-1.1.2.tgz",
+      "integrity": "sha512-RMr0FhtfXemyinomL4hrWcYJxmX6deFdCxpJzhDttxgO1+bcCnkk+9drydLVDmAMG7NE6aN/fl4F7ucU/90gAA==",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
    "node_modules/co": {
      "version": "4.6.0",
      "resolved": "https://registry.npmjs.org/co/-/co-4.6.0.tgz",
@@ -3653,6 +3745,14 @@
        "is-property": "^1.0.2"
      }
    },
+    "node_modules/generic-pool": {
+      "version": "3.9.0",
+      "resolved": "https://registry.npmjs.org/generic-pool/-/generic-pool-3.9.0.tgz",
+      "integrity": "sha512-hymDOu5B53XvN4QT9dBmZxPX4CWhBPPLguTZ9MMFeFa/Kg0xWVfylOVNlJji/E7yTZWFd/q9GO5TxDLq156D7g==",
+      "engines": {
+        "node": ">= 4"
+      }
+    },
    "node_modules/gensync": {
      "version": "1.0.0-beta.2",
      "resolved": "https://registry.npmjs.org/gensync/-/gensync-1.0.0-beta.2.tgz",
@@ -5350,9 +5450,9 @@
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    "node_modules/jest-snapshot/node_modules/semver": {
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-      "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.8.tgz",
-      "integrity": "sha512-NB1ctGL5rlHrPJtFDVIVzTyQylMLu9N9VICA6HSFJo8MCGVTMW6gfpicwKmmK/dAjTOrqu5l63JJOpDSrAis3A==",
+      "version": "7.5.4",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-7.5.4.tgz",
+      "integrity": "sha512-1bCSESV6Pv+i21Hvpxp3Dx+pSD8lIPt8uVjRrxAUt/nbswYc+tK6Y2btiULjd4+fnq15PX+nqQDC7Oft7WkwcA==",
      "dev": true,
      "dependencies": {
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@@ -5875,12 +5975,12 @@
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    "node_modules/maxmind": {
-      "version": "4.3.9",
-      "resolved": "https://registry.npmjs.org/maxmind/-/maxmind-4.3.9.tgz",
-      "integrity": "sha512-rEfIxZ9M2P7CWQQzN5/LapCawpf2DLh+LWD/cA7lNfCbFL6dNJOKgtynp8QbRsxExutn7Ofz1P1tXEdL3gnukw==",
+      "version": "4.3.11",
+      "resolved": "https://registry.npmjs.org/maxmind/-/maxmind-4.3.11.tgz",
+      "integrity": "sha512-tJDrKbUzN6PSA88tWgg0L2R4Ln00XwecYQJPFI+RvlF2k1sx6VQYtuQ1SVxm8+bw5tF7GWV4xyb+3/KyzEpPUw==",
      "dependencies": {
        "mmdb-lib": "2.0.2",
-        "tiny-lru": "10.3.0"
+        "tiny-lru": "11.0.1"
      },
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@@ -6002,15 +6102,15 @@
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        "generate-function": "^2.3.1",
        "iconv-lite": "^0.6.3",
        "long": "^5.2.1",
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@@ -12097,11 +12285,6 @@
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@@ -12149,17 +12332,17 @@
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+        "@aashutoshrathi/word-wrap": "^1.2.3",
        "deep-is": "^0.1.3",
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        "levn": "^0.4.1",
        "prelude-ls": "^1.2.1",
-        "type-check": "^0.4.0",
-        "word-wrap": "^1.2.3"
+        "type-check": "^0.4.0"
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@@ -12320,9 +12503,9 @@
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+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.0.0.tgz",
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@@ -12363,6 +12546,11 @@
        "ipaddr.js": "1.9.1"
      }
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+    "proxy-from-env": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/proxy-from-env/-/proxy-from-env-1.1.0.tgz",
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      "dev": true
    },
+    "redis": {
+      "version": "4.6.6",
+      "resolved": "https://registry.npmjs.org/redis/-/redis-4.6.6.tgz",
+      "integrity": "sha512-aLs2fuBFV/VJ28oLBqYykfnhGGkFxvx0HdCEBYdJ99FFbSEMZ7c1nVKwR6ZRv+7bb7JnC0mmCzaqu8frgOYhpA==",
+      "requires": {
+        "@redis/bloom": "1.2.0",
+        "@redis/client": "1.5.7",
+        "@redis/graph": "1.1.0",
+        "@redis/json": "1.0.4",
+        "@redis/search": "1.1.2",
+        "@redis/time-series": "1.0.4"
+      }
+    },
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      "version": "2.1.1",
      "resolved": "https://registry.npmjs.org/require-directory/-/require-directory-2.1.1.tgz",
@@ -12481,6 +12682,12 @@
        "queue-microtask": "^1.2.2"
      }
    },
+    "rust-gbt": {
+      "version": "file:rust-gbt",
+      "requires": {
+        "@napi-rs/cli": "^2.16.1"
+      }
+    },
    "safe-buffer": {
      "version": "5.2.1",
      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.1.tgz",
@@ -12492,9 +12699,9 @@
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+      "version": "6.3.1",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.1.tgz",
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@@ -12757,9 +12964,9 @@
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-      "resolved": "https://registry.npmjs.org/tiny-lru/-/tiny-lru-10.3.0.tgz",
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+      "version": "11.0.1",
+      "resolved": "https://registry.npmjs.org/tiny-lru/-/tiny-lru-11.0.1.tgz",
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@@ -12788,9 +12995,9 @@
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-      "version": "29.0.5",
-      "resolved": "https://registry.npmjs.org/ts-jest/-/ts-jest-29.0.5.tgz",
-      "integrity": "sha512-PL3UciSgIpQ7f6XjVOmbi96vmDHUqAyqDr8YxzopDqX3kfgYtX1cuNeBjP+L9sFXi6nzsGGA6R3fP3DDDJyrxA==",
+      "version": "29.1.1",
+      "resolved": "https://registry.npmjs.org/ts-jest/-/ts-jest-29.1.1.tgz",
+      "integrity": "sha512-D6xjnnbP17cC85nliwGiL+tpoKN0StpgE0TeOjXQTU6MVCfsB4v7aW05CgQ/1OywGb0x/oy9hHFnN+sczTiRaA==",
      "dev": true,
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@@ -12799,7 +13006,7 @@
        "json5": "^2.2.3",
        "lodash.memoize": "4.x",
        "make-error": "1.x",
-        "semver": "7.x",
+        "semver": "^7.5.3",
        "yargs-parser": "^21.0.1"
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@@ -12813,9 +13020,9 @@
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+          "version": "7.5.4",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-7.5.4.tgz",
+          "integrity": "sha512-1bCSESV6Pv+i21Hvpxp3Dx+pSD8lIPt8uVjRrxAUt/nbswYc+tK6Y2btiULjd4+fnq15PX+nqQDC7Oft7WkwcA==",
          "dev": true,
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@@ -12901,9 +13108,9 @@
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    "typescript": {
-      "version": "4.7.4",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.7.4.tgz",
-      "integrity": "sha512-C0WQT0gezHuw6AdY1M2jxUO83Rjf0HP7Sk1DtXj6j1EwkQNZrHAg2XPWlq62oqEhYvONq5pkC2Y9oPljWToLmQ=="
+      "version": "4.9.5",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.9.5.tgz",
+      "integrity": "sha512-1FXk9E2Hm+QzZQ7z+McJiHL4NW1F2EzMu9Nq9i3zAaGqibafqYwCVU6WyWAuyQRRzOlxou8xZSyXLEN8oKj24g=="
    },
    "unpipe": {
      "version": "1.0.0",
@@ -12982,12 +13189,6 @@
        "isexe": "^2.0.0"
      }
    },
-    "word-wrap": {
-      "version": "1.2.3",
-      "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.3.tgz",
-      "integrity": "sha512-Hz/mrNwitNRh/HUAtM/VT/5VH+ygD6DV7mYKZAtHOrbs8U7lvPS6xf7EJKMF0uW1KJCl0H701g3ZGus+muE5vQ==",
-      "dev": true
-    },
    "wrap-ansi": {
      "version": "7.0.0",
      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-7.0.0.tgz",
--- a/backend/package.json
+++ b/backend/package.json
@@ -1,6 +1,6 @@
 {
  "name": "mempool-backend",
-  "version": "2.6.0-dev",
+  "version": "3.0.0-dev",
  "description": "Bitcoin mempool visualizer and blockchain explorer backend",
  "license": "GNU Affero General Public License v3.0",
  "homepage": "https://mempool.space",
@@ -22,10 +22,10 @@
  "main": "index.ts",
  "scripts": {
    "tsc": "./node_modules/typescript/bin/tsc -p tsconfig.build.json",
-    "build": "npm run tsc && npm run create-resources",
+    "build": "npm run build-rust && npm run tsc && npm run create-resources",
    "create-resources": "cp ./src/tasks/price-feeds/mtgox-weekly.json ./dist/tasks && node dist/api/fetch-version.js",
-    "package": "npm run build && rm -rf package && mv dist package && mv node_modules package && npm run package-rm-build-deps",
-    "package-rm-build-deps": "(cd package/node_modules; rm -r typescript @typescript-eslint)",
+    "package": "npm run build && rm -rf package && mv dist package && mv node_modules package && mv rust-gbt package && npm run package-rm-build-deps",
+    "package-rm-build-deps": "(cd package/node_modules; rm -r typescript @typescript-eslint @napi-rs ../rust-gbt/target ../rust-gbt/node_modules ../rust-gbt/src)",
    "start": "node --max-old-space-size=2048 dist/index.js",
    "start-production": "node --max-old-space-size=16384 dist/index.js",
    "reindex-updated-pools": "npm run start-production --update-pools",
@@ -33,38 +33,40 @@
    "test": "./node_modules/.bin/jest --coverage",
    "lint": "./node_modules/.bin/eslint . --ext .ts",
    "lint:fix": "./node_modules/.bin/eslint . --ext .ts --fix",
-    "prettier": "./node_modules/.bin/prettier --write \"src/**/*.{js,ts}\""
+    "prettier": "./node_modules/.bin/prettier --write \"src/**/*.{js,ts}\"",
+    "build-rust": "cd rust-gbt && npm install"
  },
  "dependencies": {
    "@babel/core": "^7.21.3",
    "@mempool/electrum-client": "1.1.9",
    "@types/node": "^18.15.3",
-    "axios": "~0.27.2",
-    "bitcoinjs-lib": "~6.1.0",
+    "axios": "~1.4.0",
+    "bitcoinjs-lib": "~6.1.3",
    "crypto-js": "~4.1.1",
    "express": "~4.18.2",
-    "maxmind": "~4.3.8",
-    "mysql2": "~3.2.0",
-    "node-worker-threads-pool": "~1.5.1",
+    "maxmind": "~4.3.11",
+    "mysql2": "~3.5.2",
+    "rust-gbt": "file:./rust-gbt",
+    "redis": "^4.6.6",
    "socks-proxy-agent": "~7.0.0",
-    "typescript": "~4.7.4",
+    "typescript": "~4.9.3",
    "ws": "~8.13.0"
  },
  "devDependencies": {
-    "@babel/core": "^7.21.3",
    "@babel/code-frame": "^7.18.6",
+    "@babel/core": "^7.21.3",
    "@types/compression": "^1.7.2",
    "@types/crypto-js": "^4.1.1",
-    "@types/express": "^4.17.15",
+    "@types/express": "^4.17.17",
    "@types/jest": "^29.5.0",
-    "@types/ws": "~8.5.4",
+    "@types/ws": "~8.5.5",
    "@typescript-eslint/eslint-plugin": "^5.55.0",
    "@typescript-eslint/parser": "^5.55.0",
    "eslint": "^8.36.0",
-    "eslint-config-prettier": "^8.7.0",
+    "eslint-config-prettier": "^8.8.0",
    "jest": "^29.5.0",
-    "prettier": "^2.8.4",
-    "ts-jest": "^29.0.5",
+    "prettier": "^3.0.0",
+    "ts-jest": "^29.1.1",
    "ts-node": "^10.9.1"
  }
 }
--- a/backend/rust-gbt/.gitignore
+++ b/backend/rust-gbt/.gitignore
@@ -0,0 +1,4 @@
+*.node
+**/node_modules
+**/.DS_Store
+npm-debug.log*
--- a/backend/rust-gbt/Cargo.toml
+++ b/backend/rust-gbt/Cargo.toml
@@ -0,0 +1,25 @@
+[package]
+name = "gbt"
+version = "0.1.0"
+description = "An inefficient re-implementation of the getBlockTemplate algorithm in Rust"
+authors = ["mononaut"]
+edition = "2021"
+publish = false
+
+[lib]
+crate-type = ["cdylib"]
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+priority-queue = "1.3.2"
+bytes = "1.4.0"
+napi = { version = "2.13.2", features = ["napi8", "tokio_rt"] }
+napi-derive = "2.13.0"
+bytemuck = "1.13.1"
+tracing = "0.1.36"
+tracing-log = "0.1.3"
+tracing-subscriber = { version = "0.3.15", features = ["env-filter"]}
+
+[build-dependencies]
+napi-build = "2.0.1"
--- a/backend/rust-gbt/README.md
+++ b/backend/rust-gbt/README.md
@@ -0,0 +1,123 @@
+# gbt
+
+**gbt:** rust implementation of the getBlockTemplate algorithm
+
+This project was bootstrapped by [napi](https://www.npmjs.com/package/@napi-rs/cli).
+
+## Installing gbt
+
+Installing gbt requires a [supported version of Node and Rust](https://github.com/napi-rs/napi-rs#platform-support).
+
+The build process also requires [Rust](https://www.rust-lang.org/tools/install) to be installed.
+
+You can install the project with npm. In the project directory, run:
+
+```sh
+$ npm install
+```
+
+This fully installs the project, including installing any dependencies and running the build.
+
+## Building gbt
+
+If you have already installed the project and only want to run the build, run:
+
+```sh
+$ npm run build
+```
+
+This command uses the [napi build](https://www.npmjs.com/package/@napi-rs/cli) utility to run the Rust build and copy the built library into `./gbt.[TARGET_TRIPLE].node`.
+
+## Exploring gbt
+
+After building gbt, you can explore its exports at the Node REPL:
+
+```sh
+$ npm install
+$ node
+> require('.').hello()
+"hello node"
+```
+
+## Available Scripts
+
+In the project directory, you can run:
+
+### `npm install`
+
+Installs the project, including running `npm run build-release`.
+
+### `npm build`
+
+Builds the Node addon (`gbt.[TARGET_TRIPLE].node`) from source.
+
+Additional [`cargo build`](https://doc.rust-lang.org/cargo/commands/cargo-build.html) arguments may be passed to `npm build` and `npm build-*` commands. For example, to enable a [cargo feature](https://doc.rust-lang.org/cargo/reference/features.html):
+
+```
+npm run build -- --feature=beetle
+```
+
+#### `npm build-debug`
+
+Alias for `npm build`.
+
+#### `npm build-release`
+
+Same as [`npm build`](#npm-build) but, builds the module with the [`release`](https://doc.rust-lang.org/cargo/reference/profiles.html#release) profile. Release builds will compile slower, but run faster.
+
+### `npm test`
+
+Runs the unit tests by calling `cargo test`. You can learn more about [adding tests to your Rust code](https://doc.rust-lang.org/book/ch11-01-writing-tests.html) from the [Rust book](https://doc.rust-lang.org/book/).
+
+## Project Layout
+
+The directory structure of this project is:
+
+```
+gbt/
+├── Cargo.toml
+├── README.md
+├── gbt.[TARGET_TRIPLE].node
+├── package.json
+├── src/
+|   └── lib.rs
+└── target/
+```
+
+### Cargo.toml
+
+The Cargo [manifest file](https://doc.rust-lang.org/cargo/reference/manifest.html), which informs the `cargo` command.
+
+### README.md
+
+This file.
+
+### gbt.\[TARGET_TRIPLE\].node
+
+The Node addon—i.e., a binary Node module—generated by building the project. This is the main module for this package, as dictated by the `"main"` key in `package.json`.
+
+Under the hood, a [Node addon](https://nodejs.org/api/addons.html) is a [dynamically-linked shared object](https://en.wikipedia.org/wiki/Library_(computing)#Shared_libraries). The `"build"` script produces this file by copying it from within the `target/` directory, which is where the Rust build produces the shared object.
+
+### package.json
+
+The npm [manifest file](https://docs.npmjs.com/cli/v7/configuring-npm/package-json), which informs the `npm` command.
+
+### src/
+
+The directory tree containing the Rust source code for the project.
+
+### src/lib.rs
+
+The Rust library's main module.
+
+### target/
+
+Binary artifacts generated by the Rust build.
+
+## Learn More
+
+To learn more about Neon, see the [Napi-RS documentation](https://napi.rs/docs/introduction/getting-started).
+
+To learn more about Rust, see the [Rust documentation](https://www.rust-lang.org).
+
+To learn more about Node, see the [Node documentation](https://nodejs.org).
--- a/backend/rust-gbt/build.rs
+++ b/backend/rust-gbt/build.rs
@@ -0,0 +1,3 @@
+fn main() {
+    napi_build::setup();
+}
--- a/backend/rust-gbt/index.d.ts
+++ b/backend/rust-gbt/index.d.ts
@@ -0,0 +1,45 @@
+/* tslint:disable */
+/* eslint-disable */
+
+/* auto-generated by NAPI-RS */
+
+export interface ThreadTransaction {
+  uid: number
+  order: number
+  fee: number
+  weight: number
+  sigops: number
+  effectiveFeePerVsize: number
+  inputs: Array<number>
+}
+export class GbtGenerator {
+  constructor()
+  /**
+   * # Errors
+   *
+   * Rejects if the thread panics or if the Mutex is poisoned.
+   */
+  make(mempool: Array<ThreadTransaction>, maxUid: number): Promise<GbtResult>
+  /**
+   * # Errors
+   *
+   * Rejects if the thread panics or if the Mutex is poisoned.
+   */
+  update(newTxs: Array<ThreadTransaction>, removeTxs: Array<number>, maxUid: number): Promise<GbtResult>
+}
+/**
+ * The result from calling the gbt function.
+ *
+ * This tuple contains the following:
+ *        blocks: A 2D Vector of transaction IDs (u32), the inner Vecs each represent a block.
+ * block_weights: A Vector of total weights per block.
+ *      clusters: A 2D Vector of transaction IDs representing clusters of dependent mempool transactions
+ *         rates: A Vector of tuples containing transaction IDs (u32) and effective fee per vsize (f64)
+ */
+export class GbtResult {
+  blocks: Array<Array<number>>
+  blockWeights: Array<number>
+  clusters: Array<Array<number>>
+  rates: Array<Array<number>>
+  constructor(blocks: Array<Array<number>>, blockWeights: Array<number>, clusters: Array<Array<number>>, rates: Array<Array<number>>)
+}
--- a/backend/rust-gbt/index.js
+++ b/backend/rust-gbt/index.js
@@ -0,0 +1,258 @@
+/* tslint:disable */
+/* eslint-disable */
+/* prettier-ignore */
+
+/* auto-generated by NAPI-RS */
+
+const { existsSync, readFileSync } = require('fs')
+const { join } = require('path')
+
+const { platform, arch } = process
+
+let nativeBinding = null
+let localFileExisted = false
+let loadError = null
+
+function isMusl() {
+  // For Node 10
+  if (!process.report || typeof process.report.getReport !== 'function') {
+    try {
+      const lddPath = require('child_process').execSync('which ldd').toString().trim()
+      return readFileSync(lddPath, 'utf8').includes('musl')
+    } catch (e) {
+      return true
+    }
+  } else {
+    const { glibcVersionRuntime } = process.report.getReport().header
+    return !glibcVersionRuntime
+  }
+}
+
+switch (platform) {
+  case 'android':
+    switch (arch) {
+      case 'arm64':
+        localFileExisted = existsSync(join(__dirname, 'gbt.android-arm64.node'))
+        try {
+          if (localFileExisted) {
+            nativeBinding = require('./gbt.android-arm64.node')
+          } else {
+            nativeBinding = require('gbt-android-arm64')
+          }
+        } catch (e) {
+          loadError = e
+        }
+        break
+      case 'arm':
+        localFileExisted = existsSync(join(__dirname, 'gbt.android-arm-eabi.node'))
+        try {
+          if (localFileExisted) {
+            nativeBinding = require('./gbt.android-arm-eabi.node')
+          } else {
+            nativeBinding = require('gbt-android-arm-eabi')
+          }
+        } catch (e) {
+          loadError = e
+        }
+        break
+      default:
+        throw new Error(`Unsupported architecture on Android ${arch}`)
+    }
+    break
+  case 'win32':
+    switch (arch) {
+      case 'x64':
+        localFileExisted = existsSync(
+          join(__dirname, 'gbt.win32-x64-msvc.node')
+        )
+        try {
+          if (localFileExisted) {
+            nativeBinding = require('./gbt.win32-x64-msvc.node')
+          } else {
+            nativeBinding = require('gbt-win32-x64-msvc')
+          }
+        } catch (e) {
+          loadError = e
+        }
+        break
+      case 'ia32':
+        localFileExisted = existsSync(
+          join(__dirname, 'gbt.win32-ia32-msvc.node')
+        )
+        try {
+          if (localFileExisted) {
+            nativeBinding = require('./gbt.win32-ia32-msvc.node')
+          } else {
+            nativeBinding = require('gbt-win32-ia32-msvc')
+          }
+        } catch (e) {
+          loadError = e
+        }
+        break
+      case 'arm64':
+        localFileExisted = existsSync(
+          join(__dirname, 'gbt.win32-arm64-msvc.node')
+        )
+        try {
+          if (localFileExisted) {
+            nativeBinding = require('./gbt.win32-arm64-msvc.node')
+          } else {
+            nativeBinding = require('gbt-win32-arm64-msvc')
+          }
+        } catch (e) {
+          loadError = e
+        }
+        break
+      default:
+        throw new Error(`Unsupported architecture on Windows: ${arch}`)
+    }
+    break
+  case 'darwin':
+    localFileExisted = existsSync(join(__dirname, 'gbt.darwin-universal.node'))
+    try {
+      if (localFileExisted) {
+        nativeBinding = require('./gbt.darwin-universal.node')
+      } else {
+        nativeBinding = require('gbt-darwin-universal')
+      }
+      break
+    } catch {}
+    switch (arch) {
+      case 'x64':
+        localFileExisted = existsSync(join(__dirname, 'gbt.darwin-x64.node'))
+        try {
+          if (localFileExisted) {
+            nativeBinding = require('./gbt.darwin-x64.node')
+          } else {
+            nativeBinding = require('gbt-darwin-x64')
+          }
+        } catch (e) {
+          loadError = e
+        }
+        break
+      case 'arm64':
+        localFileExisted = existsSync(
+          join(__dirname, 'gbt.darwin-arm64.node')
+        )
+        try {
+          if (localFileExisted) {
+            nativeBinding = require('./gbt.darwin-arm64.node')
+          } else {
+            nativeBinding = require('gbt-darwin-arm64')
+          }
+        } catch (e) {
+          loadError = e
+        }
+        break
+      default:
+        throw new Error(`Unsupported architecture on macOS: ${arch}`)
+    }
+    break
+  case 'freebsd':
+    if (arch !== 'x64') {
+      throw new Error(`Unsupported architecture on FreeBSD: ${arch}`)
+    }
+    localFileExisted = existsSync(join(__dirname, 'gbt.freebsd-x64.node'))
+    try {
+      if (localFileExisted) {
+        nativeBinding = require('./gbt.freebsd-x64.node')
+      } else {
+        nativeBinding = require('gbt-freebsd-x64')
+      }
+    } catch (e) {
+      loadError = e
+    }
+    break
+  case 'linux':
+    switch (arch) {
+      case 'x64':
+        if (isMusl()) {
+          localFileExisted = existsSync(
+            join(__dirname, 'gbt.linux-x64-musl.node')
+          )
+          try {
+            if (localFileExisted) {
+              nativeBinding = require('./gbt.linux-x64-musl.node')
+            } else {
+              nativeBinding = require('gbt-linux-x64-musl')
+            }
+          } catch (e) {
+            loadError = e
+          }
+        } else {
+          localFileExisted = existsSync(
+            join(__dirname, 'gbt.linux-x64-gnu.node')
+          )
+          try {
+            if (localFileExisted) {
+              nativeBinding = require('./gbt.linux-x64-gnu.node')
+            } else {
+              nativeBinding = require('gbt-linux-x64-gnu')
+            }
+          } catch (e) {
+            loadError = e
+          }
+        }
+        break
+      case 'arm64':
+        if (isMusl()) {
+          localFileExisted = existsSync(
+            join(__dirname, 'gbt.linux-arm64-musl.node')
+          )
+          try {
+            if (localFileExisted) {
+              nativeBinding = require('./gbt.linux-arm64-musl.node')
+            } else {
+              nativeBinding = require('gbt-linux-arm64-musl')
+            }
+          } catch (e) {
+            loadError = e
+          }
+        } else {
+          localFileExisted = existsSync(
+            join(__dirname, 'gbt.linux-arm64-gnu.node')
+          )
+          try {
+            if (localFileExisted) {
+              nativeBinding = require('./gbt.linux-arm64-gnu.node')
+            } else {
+              nativeBinding = require('gbt-linux-arm64-gnu')
+            }
+          } catch (e) {
+            loadError = e
+          }
+        }
+        break
+      case 'arm':
+        localFileExisted = existsSync(
+          join(__dirname, 'gbt.linux-arm-gnueabihf.node')
+        )
+        try {
+          if (localFileExisted) {
+            nativeBinding = require('./gbt.linux-arm-gnueabihf.node')
+          } else {
+            nativeBinding = require('gbt-linux-arm-gnueabihf')
+          }
+        } catch (e) {
+          loadError = e
+        }
+        break
+      default:
+        throw new Error(`Unsupported architecture on Linux: ${arch}`)
+    }
+    break
+  default:
+    throw new Error(`Unsupported OS: ${platform}, architecture: ${arch}`)
+}
+
+if (!nativeBinding) {
+  if (loadError) {
+    throw loadError
+  }
+  throw new Error(`Failed to load native binding`)
+}
+
+const { GbtGenerator, GbtResult } = nativeBinding
+
+module.exports.GbtGenerator = GbtGenerator
+module.exports.GbtResult = GbtResult
--- a/backend/rust-gbt/package-lock.json
+++ b/backend/rust-gbt/package-lock.json
@@ -0,0 +1,34 @@
+{
+  "name": "gbt",
+  "version": "3.0.0-dev",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "gbt",
+      "version": "3.0.0-dev",
+      "hasInstallScript": true,
+      "dependencies": {
+        "@napi-rs/cli": "^2.16.1"
+      },
+      "engines": {
+        "node": ">= 12"
+      }
+    },
+    "node_modules/@napi-rs/cli": {
+      "version": "2.16.1",
+      "resolved": "https://registry.npmjs.org/@napi-rs/cli/-/cli-2.16.1.tgz",
+      "integrity": "sha512-L0Gr5iEQIDEbvWdDr1HUaBOxBSHL1VZhWSk1oryawoT8qJIY+KGfLFelU+Qma64ivCPbxYpkfPoKYVG3rcoGIA==",
+      "bin": {
+        "napi": "scripts/index.js"
+      },
+      "engines": {
+        "node": ">= 10"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/Brooooooklyn"
+      }
+    }
+  }
+}
--- a/backend/rust-gbt/package.json
+++ b/backend/rust-gbt/package.json
@@ -0,0 +1,33 @@
+{
+  "name": "gbt",
+  "version": "3.0.0-dev",
+  "description": "An inefficient re-implementation of the getBlockTemplate algorithm in Rust",
+  "main": "index.js",
+  "types": "index.d.ts",
+  "scripts": {
+    "artifacts": "napi artifacts",
+    "build": "napi build --platform",
+    "build-debug": "npm run build",
+    "build-release": "npm run build -- --release --strip",
+    "install": "npm run build-release",
+    "prepublishOnly": "napi prepublish -t npm",
+    "test": "cargo test"
+  },
+  "author": "mononaut",
+  "napi": {
+    "name": "gbt",
+    "triples": {
+      "defaults": false,
+      "additional": [
+        "x86_64-unknown-linux-gnu",
+        "x86_64-unknown-freebsd"
+      ]
+    }
+  },
+  "dependencies": {
+    "@napi-rs/cli": "^2.16.1"
+  },
+  "engines": {
+    "node": ">= 12"
+  }
+}
--- a/backend/rust-gbt/src/audit_transaction.rs
+++ b/backend/rust-gbt/src/audit_transaction.rs
@@ -0,0 +1,220 @@
+use crate::{
+    u32_hasher_types::{u32hashset_new, U32HasherState},
+    ThreadTransaction,
+};
+use std::{
+    cmp::Ordering,
+    collections::HashSet,
+    hash::{Hash, Hasher},
+};
+
+#[allow(clippy::struct_excessive_bools)]
+#[derive(Clone, Debug)]
+pub struct AuditTransaction {
+    pub uid: u32,
+    order: u32,
+    pub fee: u64,
+    pub weight: u32,
+    // exact sigop-adjusted weight
+    pub sigop_adjusted_weight: u32,
+    // sigop-adjusted vsize rounded up the the next integer
+    pub sigop_adjusted_vsize: u32,
+    pub sigops: u32,
+    adjusted_fee_per_vsize: f64,
+    pub effective_fee_per_vsize: f64,
+    pub dependency_rate: f64,
+    pub inputs: Vec<u32>,
+    pub relatives_set_flag: bool,
+    pub ancestors: HashSet<u32, U32HasherState>,
+    pub children: HashSet<u32, U32HasherState>,
+    ancestor_fee: u64,
+    ancestor_sigop_adjusted_weight: u32,
+    ancestor_sigop_adjusted_vsize: u32,
+    ancestor_sigops: u32,
+    // Safety: Must be private to prevent NaN breaking Ord impl.
+    score: f64,
+    pub used: bool,
+    /// whether this transaction has been moved to the "modified" priority queue
+    pub modified: bool,
+    pub dirty: bool,
+}
+
+impl Hash for AuditTransaction {
+    fn hash<H: Hasher>(&self, state: &mut H) {
+        self.uid.hash(state);
+    }
+}
+
+impl PartialEq for AuditTransaction {
+    fn eq(&self, other: &Self) -> bool {
+        self.uid == other.uid
+    }
+}
+
+impl Eq for AuditTransaction {}
+
+#[inline]
+pub fn partial_cmp_uid_score(a: (u32, u32, f64), b: (u32, u32, f64)) -> Option<Ordering> {
+    // If either score is NaN, this is false,
+    // and partial_cmp will return None
+    if a.2 != b.2 {
+        // compare by score (sorts by ascending score)
+        a.2.partial_cmp(&b.2)
+    } else if a.1 != b.1 {
+        // tie-break by comparing partial txids (sorts by descending txid)
+        Some(b.1.cmp(&a.1))
+    } else {
+        // tie-break partial txid collisions by comparing uids (sorts by descending uid)
+        Some(b.0.cmp(&a.0))
+    }
+}
+
+impl PartialOrd for AuditTransaction {
+    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
+        partial_cmp_uid_score(
+            (self.uid, self.order, self.score),
+            (other.uid, other.order, other.score),
+        )
+    }
+}
+
+impl Ord for AuditTransaction {
+    fn cmp(&self, other: &Self) -> Ordering {
+        // Safety: The only possible values for score are f64
+        // that are not NaN. This is because outside code can not
+        // freely assign score. Also, calc_new_score guarantees no NaN.
+        self.partial_cmp(other).expect("score will never be NaN")
+    }
+}
+
+#[inline]
+fn calc_fee_rate(fee: f64, vsize: f64) -> f64 {
+    fee / (if vsize == 0.0 { 1.0 } else { vsize })
+}
+
+impl AuditTransaction {
+    pub fn from_thread_transaction(tx: &ThreadTransaction) -> Self {
+        // rounded up to the nearest integer
+        let is_adjusted = tx.weight < (tx.sigops * 20);
+        let sigop_adjusted_vsize = ((tx.weight + 3) / 4).max(tx.sigops * 5);
+        let sigop_adjusted_weight = tx.weight.max(tx.sigops * 20);
+        let effective_fee_per_vsize = if is_adjusted {
+            calc_fee_rate(tx.fee, f64::from(sigop_adjusted_weight) / 4.0)
+        } else {
+            tx.effective_fee_per_vsize
+        };
+        Self {
+            uid: tx.uid,
+            order: tx.order,
+            fee: tx.fee as u64,
+            weight: tx.weight,
+            sigop_adjusted_weight,
+            sigop_adjusted_vsize,
+            sigops: tx.sigops,
+            adjusted_fee_per_vsize: calc_fee_rate(tx.fee, f64::from(sigop_adjusted_vsize)),
+            effective_fee_per_vsize,
+            dependency_rate: f64::INFINITY,
+            inputs: tx.inputs.clone(),
+            relatives_set_flag: false,
+            ancestors: u32hashset_new(),
+            children: u32hashset_new(),
+            ancestor_fee: tx.fee as u64,
+            ancestor_sigop_adjusted_weight: sigop_adjusted_weight,
+            ancestor_sigop_adjusted_vsize: sigop_adjusted_vsize,
+            ancestor_sigops: tx.sigops,
+            score: 0.0,
+            used: false,
+            modified: false,
+            dirty: effective_fee_per_vsize != tx.effective_fee_per_vsize,
+        }
+    }
+
+    #[inline]
+    pub const fn score(&self) -> f64 {
+        self.score
+    }
+
+    #[inline]
+    pub const fn order(&self) -> u32 {
+        self.order
+    }
+
+    #[inline]
+    pub const fn ancestor_sigop_adjusted_vsize(&self) -> u32 {
+        self.ancestor_sigop_adjusted_vsize
+    }
+
+    #[inline]
+    pub const fn ancestor_sigops(&self) -> u32 {
+        self.ancestor_sigops
+    }
+
+    #[inline]
+    pub fn cluster_rate(&self) -> f64 {
+        // Safety: self.ancestor_weight can never be 0.
+        // Even if it could, as it approaches 0, the value inside the min() call
+        // grows, so if we think of 0 as "grew infinitely" then dependency_rate would be
+        // the smaller of the two. If either side is NaN, the other side is returned.
+        self.dependency_rate.min(calc_fee_rate(
+            self.ancestor_fee as f64,
+            f64::from(self.ancestor_sigop_adjusted_weight) / 4.0,
+        ))
+    }
+
+    pub fn set_dirty_if_different(&mut self, cluster_rate: f64) {
+        if self.effective_fee_per_vsize != cluster_rate {
+            self.effective_fee_per_vsize = cluster_rate;
+            self.dirty = true;
+        }
+    }
+
+    /// Safety: This function must NEVER set score to NaN.
+    #[inline]
+    fn calc_new_score(&mut self) {
+        self.score = self.adjusted_fee_per_vsize.min(calc_fee_rate(
+            self.ancestor_fee as f64,
+            f64::from(self.ancestor_sigop_adjusted_vsize),
+        ));
+    }
+
+    #[inline]
+    pub fn set_ancestors(
+        &mut self,
+        ancestors: HashSet<u32, U32HasherState>,
+        total_fee: u64,
+        total_sigop_adjusted_weight: u32,
+        total_sigop_adjusted_vsize: u32,
+        total_sigops: u32,
+    ) {
+        self.ancestors = ancestors;
+        self.ancestor_fee = self.fee + total_fee;
+        self.ancestor_sigop_adjusted_weight =
+            self.sigop_adjusted_weight + total_sigop_adjusted_weight;
+        self.ancestor_sigop_adjusted_vsize = self.sigop_adjusted_vsize + total_sigop_adjusted_vsize;
+        self.ancestor_sigops = self.sigops + total_sigops;
+        self.calc_new_score();
+        self.relatives_set_flag = true;
+    }
+
+    #[inline]
+    pub fn remove_root(
+        &mut self,
+        root_txid: u32,
+        root_fee: u64,
+        root_sigop_adjusted_weight: u32,
+        root_sigop_adjusted_vsize: u32,
+        root_sigops: u32,
+        cluster_rate: f64,
+    ) -> f64 {
+        let old_score = self.score();
+        self.dependency_rate = self.dependency_rate.min(cluster_rate);
+        if self.ancestors.remove(&root_txid) {
+            self.ancestor_fee -= root_fee;
+            self.ancestor_sigop_adjusted_weight -= root_sigop_adjusted_weight;
+            self.ancestor_sigop_adjusted_vsize -= root_sigop_adjusted_vsize;
+            self.ancestor_sigops -= root_sigops;
+            self.calc_new_score();
+        }
+        old_score
+    }
+}
--- a/backend/rust-gbt/src/gbt.rs
+++ b/backend/rust-gbt/src/gbt.rs
@@ -0,0 +1,421 @@
+use priority_queue::PriorityQueue;
+use std::{cmp::Ordering, collections::HashSet, mem::ManuallyDrop};
+use tracing::{info, trace};
+
+use crate::{
+    audit_transaction::{partial_cmp_uid_score, AuditTransaction},
+    u32_hasher_types::{u32hashset_new, u32priority_queue_with_capacity, U32HasherState},
+    GbtResult, ThreadTransactionsMap,
+};
+
+const MAX_BLOCK_WEIGHT_UNITS: u32 = 4_000_000 - 4_000;
+const BLOCK_SIGOPS: u32 = 80_000;
+const BLOCK_RESERVED_WEIGHT: u32 = 4_000;
+const BLOCK_RESERVED_SIGOPS: u32 = 400;
+const MAX_BLOCKS: usize = 8;
+
+type AuditPool = Vec<Option<ManuallyDrop<AuditTransaction>>>;
+type ModifiedQueue = PriorityQueue<u32, TxPriority, U32HasherState>;
+
+#[derive(Debug)]
+struct TxPriority {
+    uid: u32,
+    order: u32,
+    score: f64,
+}
+impl PartialEq for TxPriority {
+    fn eq(&self, other: &Self) -> bool {
+        self.uid == other.uid
+    }
+}
+impl Eq for TxPriority {}
+impl PartialOrd for TxPriority {
+    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
+        partial_cmp_uid_score(
+            (self.uid, self.order, self.score),
+            (other.uid, other.order, other.score),
+        )
+    }
+}
+impl Ord for TxPriority {
+    fn cmp(&self, other: &Self) -> Ordering {
+        self.partial_cmp(other).expect("score will never be NaN")
+    }
+}
+
+/// Build projected mempool blocks using an approximation of the transaction selection algorithm from Bitcoin Core.
+///
+/// See `BlockAssembler` in Bitcoin Core's
+/// [miner.cpp](https://github.com/bitcoin/bitcoin/blob/master/src/node/miner.cpp).
+/// Ported from mempool backend's
+/// [tx-selection-worker.ts](https://github.com/mempool/mempool/blob/master/backend/src/api/tx-selection-worker.ts).
+//
+// TODO: Make gbt smaller to fix these lints.
+#[allow(clippy::too_many_lines)]
+#[allow(clippy::cognitive_complexity)]
+pub fn gbt(mempool: &mut ThreadTransactionsMap, max_uid: usize) -> GbtResult {
+    let mempool_len = mempool.len();
+    let mut audit_pool: AuditPool = Vec::with_capacity(max_uid + 1);
+    audit_pool.resize(max_uid + 1, None);
+    let mut mempool_stack: Vec<u32> = Vec::with_capacity(mempool_len);
+    let mut clusters: Vec<Vec<u32>> = Vec::new();
+    let mut block_weights: Vec<u32> = Vec::new();
+
+    info!("Initializing working structs");
+    for (uid, tx) in &mut *mempool {
+        let audit_tx = AuditTransaction::from_thread_transaction(tx);
+        // Safety: audit_pool and mempool_stack must always contain the same transactions
+        audit_pool[*uid as usize] = Some(ManuallyDrop::new(audit_tx));
+        mempool_stack.push(*uid);
+    }
+
+    info!("Building relatives graph & calculate ancestor scores");
+    for txid in &mempool_stack {
+        set_relatives(*txid, &mut audit_pool);
+    }
+    trace!("Post relative graph Audit Pool: {:#?}", audit_pool);
+
+    info!("Sorting by descending ancestor score");
+    let mut mempool_stack: Vec<(u32, u32, f64)> = mempool_stack
+        .into_iter()
+        .map(|txid| {
+            let atx = audit_pool
+                .get(txid as usize)
+                .and_then(Option::as_ref)
+                .expect("All txids are from audit_pool");
+            (txid, atx.order(), atx.score())
+        })
+        .collect();
+    mempool_stack.sort_unstable_by(|a, b| partial_cmp_uid_score(*a, *b).expect("Not NaN"));
+    let mut mempool_stack: Vec<u32> = mempool_stack.into_iter().map(|(txid, _, _)| txid).collect();
+
+    info!("Building blocks by greedily choosing the highest feerate package");
+    info!("(i.e. the package rooted in the transaction with the best ancestor score)");
+    let mut blocks: Vec<Vec<u32>> = Vec::new();
+    let mut block_weight: u32 = BLOCK_RESERVED_WEIGHT;
+    let mut block_sigops: u32 = BLOCK_RESERVED_SIGOPS;
+    // No need to be bigger than 4096 transactions for the per-block transaction Vec.
+    let initial_txes_per_block: usize = 4096.min(mempool_len);
+    let mut transactions: Vec<u32> = Vec::with_capacity(initial_txes_per_block);
+    let mut modified: ModifiedQueue = u32priority_queue_with_capacity(mempool_len);
+    let mut overflow: Vec<u32> = Vec::new();
+    let mut failures = 0;
+    while !mempool_stack.is_empty() || !modified.is_empty() {
+        // This trace log storm is big, so to make scrolling through
+        // Each iteration easier, leaving a bunch of empty rows
+        // And a header of ======
+        trace!("\n\n\n\n\n\n\n\n\n\n==================================");
+        trace!("mempool_array: {:#?}", mempool_stack);
+        trace!("clusters: {:#?}", clusters);
+        trace!("modified: {:#?}", modified);
+        trace!("audit_pool: {:#?}", audit_pool);
+        trace!("blocks: {:#?}", blocks);
+        trace!("block_weight: {:#?}", block_weight);
+        trace!("block_sigops: {:#?}", block_sigops);
+        trace!("transactions: {:#?}", transactions);
+        trace!("overflow: {:#?}", overflow);
+        trace!("failures: {:#?}", failures);
+        trace!("\n==================================");
+
+        let next_from_stack = next_valid_from_stack(&mut mempool_stack, &audit_pool);
+        let next_from_queue = next_valid_from_queue(&mut modified, &audit_pool);
+        if next_from_stack.is_none() && next_from_queue.is_none() {
+            continue;
+        }
+        let (next_tx, from_stack) = match (next_from_stack, next_from_queue) {
+            (Some(stack_tx), Some(queue_tx)) => match queue_tx.cmp(stack_tx) {
+                std::cmp::Ordering::Less => (stack_tx, true),
+                _ => (queue_tx, false),
+            },
+            (Some(stack_tx), None) => (stack_tx, true),
+            (None, Some(queue_tx)) => (queue_tx, false),
+            (None, None) => unreachable!(),
+        };
+
+        if from_stack {
+            mempool_stack.pop();
+        } else {
+            modified.pop();
+        }
+
+        if blocks.len() < (MAX_BLOCKS - 1)
+            && ((block_weight + (4 * next_tx.ancestor_sigop_adjusted_vsize())
+                >= MAX_BLOCK_WEIGHT_UNITS)
+                || (block_sigops + next_tx.ancestor_sigops() > BLOCK_SIGOPS))
+        {
+            // hold this package in an overflow list while we check for smaller options
+            overflow.push(next_tx.uid);
+            failures += 1;
+        } else {
+            let mut package: Vec<(u32, u32, usize)> = Vec::new();
+            let mut cluster: Vec<u32> = Vec::new();
+            let is_cluster: bool = !next_tx.ancestors.is_empty();
+            for ancestor_id in &next_tx.ancestors {
+                if let Some(Some(ancestor)) = audit_pool.get(*ancestor_id as usize) {
+                    package.push((*ancestor_id, ancestor.order(), ancestor.ancestors.len()));
+                }
+            }
+            package.sort_unstable_by(|a, b| -> Ordering {
+                if a.2 != b.2 {
+                    // order by ascending ancestor count
+                    a.2.cmp(&b.2)
+                } else if a.1 != b.1 {
+                    // tie-break by ascending partial txid
+                    a.1.cmp(&b.1)
+                } else {
+                    // tie-break partial txid collisions by ascending uid
+                    a.0.cmp(&b.0)
+                }
+            });
+            package.push((next_tx.uid, next_tx.order(), next_tx.ancestors.len()));
+
+            let cluster_rate = next_tx.cluster_rate();
+
+            for (txid, _, _) in &package {
+                cluster.push(*txid);
+                if let Some(Some(tx)) = audit_pool.get_mut(*txid as usize) {
+                    tx.used = true;
+                    tx.set_dirty_if_different(cluster_rate);
+                    transactions.push(tx.uid);
+                    block_weight += tx.weight;
+                    block_sigops += tx.sigops;
+                }
+                update_descendants(*txid, &mut audit_pool, &mut modified, cluster_rate);
+            }
+
+            if is_cluster {
+                clusters.push(cluster);
+            }
+
+            failures = 0;
+        }
+
+        // this block is full
+        let exceeded_package_tries =
+            failures > 1000 && block_weight > (MAX_BLOCK_WEIGHT_UNITS - BLOCK_RESERVED_WEIGHT);
+        let queue_is_empty = mempool_stack.is_empty() && modified.is_empty();
+        if (exceeded_package_tries || queue_is_empty) && blocks.len() < (MAX_BLOCKS - 1) {
+            // finalize this block
+            if !transactions.is_empty() {
+                blocks.push(transactions);
+                block_weights.push(block_weight);
+            }
+            // reset for the next block
+            transactions = Vec::with_capacity(initial_txes_per_block);
+            block_weight = BLOCK_RESERVED_WEIGHT;
+            block_sigops = BLOCK_RESERVED_SIGOPS;
+            failures = 0;
+            // 'overflow' packages didn't fit in this block, but are valid candidates for the next
+            overflow.reverse();
+            for overflowed in &overflow {
+                if let Some(Some(overflowed_tx)) = audit_pool.get(*overflowed as usize) {
+                    if overflowed_tx.modified {
+                        modified.push(
+                            *overflowed,
+                            TxPriority {
+                                uid: *overflowed,
+                                order: overflowed_tx.order(),
+                                score: overflowed_tx.score(),
+                            },
+                        );
+                    } else {
+                        mempool_stack.push(*overflowed);
+                    }
+                }
+            }
+            overflow = Vec::new();
+        }
+    }
+    info!("add the final unbounded block if it contains any transactions");
+    if !transactions.is_empty() {
+        blocks.push(transactions);
+        block_weights.push(block_weight);
+    }
+
+    info!("make a list of dirty transactions and their new rates");
+    let mut rates: Vec<Vec<f64>> = Vec::new();
+    for (uid, thread_tx) in mempool {
+        // Takes ownership of the audit_tx and replaces with None
+        if let Some(Some(audit_tx)) = audit_pool.get_mut(*uid as usize).map(Option::take) {
+            trace!("txid: {}, is_dirty: {}", uid, audit_tx.dirty);
+            if audit_tx.dirty {
+                rates.push(vec![f64::from(*uid), audit_tx.effective_fee_per_vsize]);
+                thread_tx.effective_fee_per_vsize = audit_tx.effective_fee_per_vsize;
+            }
+            // Drops the AuditTransaction manually
+            // There are no audit_txs that are not in the mempool HashMap
+            // So there is guaranteed to be no memory leaks.
+            ManuallyDrop::into_inner(audit_tx);
+        }
+    }
+    trace!("\n\n\n\n\n====================");
+    trace!("blocks: {:#?}", blocks);
+    trace!("clusters: {:#?}", clusters);
+    trace!("rates: {:#?}\n====================\n\n\n\n\n", rates);
+
+    GbtResult {
+        blocks,
+        block_weights,
+        clusters,
+        rates,
+    }
+}
+
+fn next_valid_from_stack<'a>(
+    mempool_stack: &mut Vec<u32>,
+    audit_pool: &'a AuditPool,
+) -> Option<&'a AuditTransaction> {
+    while let Some(next_txid) = mempool_stack.last() {
+        match audit_pool.get(*next_txid as usize) {
+            Some(Some(tx)) if !tx.used && !tx.modified => {
+                return Some(tx);
+            }
+            _ => {
+                mempool_stack.pop();
+            }
+        }
+    }
+    None
+}
+
+fn next_valid_from_queue<'a>(
+    queue: &mut ModifiedQueue,
+    audit_pool: &'a AuditPool,
+) -> Option<&'a AuditTransaction> {
+    while let Some((next_txid, _)) = queue.peek() {
+        match audit_pool.get(*next_txid as usize) {
+            Some(Some(tx)) if !tx.used => {
+                return Some(tx);
+            }
+            _ => {
+                queue.pop();
+            }
+        }
+    }
+    None
+}
+
+fn set_relatives(txid: u32, audit_pool: &mut AuditPool) {
+    let mut parents: HashSet<u32, U32HasherState> = u32hashset_new();
+    if let Some(Some(tx)) = audit_pool.get(txid as usize) {
+        if tx.relatives_set_flag {
+            return;
+        }
+        for input in &tx.inputs {
+            parents.insert(*input);
+        }
+    } else {
+        return;
+    }
+
+    let mut ancestors: HashSet<u32, U32HasherState> = u32hashset_new();
+    for parent_id in &parents {
+        set_relatives(*parent_id, audit_pool);
+
+        if let Some(Some(parent)) = audit_pool.get_mut(*parent_id as usize) {
+            // Safety: ancestors must always contain only txes in audit_pool
+            ancestors.insert(*parent_id);
+            parent.children.insert(txid);
+            for ancestor in &parent.ancestors {
+                ancestors.insert(*ancestor);
+            }
+        }
+    }
+
+    let mut total_fee: u64 = 0;
+    let mut total_sigop_adjusted_weight: u32 = 0;
+    let mut total_sigop_adjusted_vsize: u32 = 0;
+    let mut total_sigops: u32 = 0;
+
+    for ancestor_id in &ancestors {
+        let Some(ancestor) = audit_pool
+            .get(*ancestor_id as usize)
+            .expect("audit_pool contains all ancestors") else { todo!() };
+        total_fee += ancestor.fee;
+        total_sigop_adjusted_weight += ancestor.sigop_adjusted_weight;
+        total_sigop_adjusted_vsize += ancestor.sigop_adjusted_vsize;
+        total_sigops += ancestor.sigops;
+    }
+
+    if let Some(Some(tx)) = audit_pool.get_mut(txid as usize) {
+        tx.set_ancestors(
+            ancestors,
+            total_fee,
+            total_sigop_adjusted_weight,
+            total_sigop_adjusted_vsize,
+            total_sigops,
+        );
+    }
+}
+
+// iterate over remaining descendants, removing the root as a valid ancestor & updating the ancestor score
+fn update_descendants(
+    root_txid: u32,
+    audit_pool: &mut AuditPool,
+    modified: &mut ModifiedQueue,
+    cluster_rate: f64,
+) {
+    let mut visited: HashSet<u32, U32HasherState> = u32hashset_new();
+    let mut descendant_stack: Vec<u32> = Vec::new();
+    let root_fee: u64;
+    let root_sigop_adjusted_weight: u32;
+    let root_sigop_adjusted_vsize: u32;
+    let root_sigops: u32;
+    if let Some(Some(root_tx)) = audit_pool.get(root_txid as usize) {
+        for descendant_id in &root_tx.children {
+            if !visited.contains(descendant_id) {
+                descendant_stack.push(*descendant_id);
+                visited.insert(*descendant_id);
+            }
+        }
+        root_fee = root_tx.fee;
+        root_sigop_adjusted_weight = root_tx.sigop_adjusted_weight;
+        root_sigop_adjusted_vsize = root_tx.sigop_adjusted_vsize;
+        root_sigops = root_tx.sigops;
+    } else {
+        return;
+    }
+    while let Some(next_txid) = descendant_stack.pop() {
+        if let Some(Some(descendant)) = audit_pool.get_mut(next_txid as usize) {
+            // remove root tx as ancestor
+            let old_score = descendant.remove_root(
+                root_txid,
+                root_fee,
+                root_sigop_adjusted_weight,
+                root_sigop_adjusted_vsize,
+                root_sigops,
+                cluster_rate,
+            );
+            // add to priority queue or update priority if score has changed
+            if descendant.score() < old_score {
+                descendant.modified = true;
+                modified.push_decrease(
+                    descendant.uid,
+                    TxPriority {
+                        uid: descendant.uid,
+                        order: descendant.order(),
+                        score: descendant.score(),
+                    },
+                );
+            } else if descendant.score() > old_score {
+                descendant.modified = true;
+                modified.push_increase(
+                    descendant.uid,
+                    TxPriority {
+                        uid: descendant.uid,
+                        order: descendant.order(),
+                        score: descendant.score(),
+                    },
+                );
+            }
+
+            // add this node's children to the stack
+            for child_id in &descendant.children {
+                if !visited.contains(child_id) {
+                    descendant_stack.push(*child_id);
+                    visited.insert(*child_id);
+                }
+            }
+        }
+    }
+}
--- a/backend/rust-gbt/src/lib.rs
+++ b/backend/rust-gbt/src/lib.rs
@@ -0,0 +1,177 @@
+#![warn(clippy::all)]
+#![warn(clippy::pedantic)]
+#![warn(clippy::nursery)]
+#![allow(clippy::cast_precision_loss)]
+#![allow(clippy::cast_possible_truncation)]
+#![allow(clippy::cast_sign_loss)]
+#![allow(clippy::float_cmp)]
+
+use napi::bindgen_prelude::Result;
+use napi_derive::napi;
+use thread_transaction::ThreadTransaction;
+use tracing::{debug, info, trace};
+use tracing_log::LogTracer;
+use tracing_subscriber::{EnvFilter, FmtSubscriber};
+
+use std::collections::HashMap;
+use std::sync::{Arc, Mutex};
+
+mod audit_transaction;
+mod gbt;
+mod thread_transaction;
+mod u32_hasher_types;
+
+use u32_hasher_types::{u32hashmap_with_capacity, U32HasherState};
+
+/// This is the initial capacity of the `GbtGenerator` struct's inner `HashMap`.
+///
+/// Note: This doesn't *have* to be a power of 2. (uwu)
+const STARTING_CAPACITY: usize = 1_048_576;
+
+type ThreadTransactionsMap = HashMap<u32, ThreadTransaction, U32HasherState>;
+
+#[napi]
+pub struct GbtGenerator {
+    thread_transactions: Arc<Mutex<ThreadTransactionsMap>>,
+}
+
+#[napi::module_init]
+fn init() {
+    // Set all `tracing` logs to print to STDOUT
+    // Note: Passing RUST_LOG env variable to the node process
+    //       will change the log level for the rust module.
+    tracing::subscriber::set_global_default(
+        FmtSubscriber::builder()
+            .with_env_filter(EnvFilter::from_default_env())
+            .with_ansi(
+                // Default to no-color logs.
+                // Setting RUST_LOG_COLOR to 1 or true|TRUE|True etc.
+                // will enable color
+                std::env::var("RUST_LOG_COLOR")
+                    .map(|s| ["1", "true"].contains(&&*s.to_lowercase()))
+                    .unwrap_or(false),
+            )
+            .finish(),
+    )
+    .expect("Logging subscriber failed");
+    // Convert all `log` logs into `tracing` events
+    LogTracer::init().expect("Legacy log subscriber failed");
+}
+
+#[napi]
+impl GbtGenerator {
+    #[napi(constructor)]
+    #[allow(clippy::new_without_default)]
+    #[must_use]
+    pub fn new() -> Self {
+        debug!("Created new GbtGenerator");
+        Self {
+            thread_transactions: Arc::new(Mutex::new(u32hashmap_with_capacity(STARTING_CAPACITY))),
+        }
+    }
+
+    /// # Errors
+    ///
+    /// Rejects if the thread panics or if the Mutex is poisoned.
+    #[napi]
+    pub async fn make(&self, mempool: Vec<ThreadTransaction>, max_uid: u32) -> Result<GbtResult> {
+        trace!("make: Current State {:#?}", self.thread_transactions);
+        run_task(
+            Arc::clone(&self.thread_transactions),
+            max_uid as usize,
+            move |map| {
+                for tx in mempool {
+                    map.insert(tx.uid, tx);
+                }
+            },
+        )
+        .await
+    }
+
+    /// # Errors
+    ///
+    /// Rejects if the thread panics or if the Mutex is poisoned.
+    #[napi]
+    pub async fn update(
+        &self,
+        new_txs: Vec<ThreadTransaction>,
+        remove_txs: Vec<u32>,
+        max_uid: u32,
+    ) -> Result<GbtResult> {
+        trace!("update: Current State {:#?}", self.thread_transactions);
+        run_task(
+            Arc::clone(&self.thread_transactions),
+            max_uid as usize,
+            move |map| {
+                for tx in new_txs {
+                    map.insert(tx.uid, tx);
+                }
+                for txid in &remove_txs {
+                    map.remove(txid);
+                }
+            },
+        )
+        .await
+    }
+}
+
+/// The result from calling the gbt function.
+///
+/// This tuple contains the following:
+///        blocks: A 2D Vector of transaction IDs (u32), the inner Vecs each represent a block.
+/// block_weights: A Vector of total weights per block.
+///      clusters: A 2D Vector of transaction IDs representing clusters of dependent mempool transactions
+///         rates: A Vector of tuples containing transaction IDs (u32) and effective fee per vsize (f64)
+#[napi(constructor)]
+pub struct GbtResult {
+    pub blocks: Vec<Vec<u32>>,
+    pub block_weights: Vec<u32>,
+    pub clusters: Vec<Vec<u32>>,
+    pub rates: Vec<Vec<f64>>, // Tuples not supported. u32 fits inside f64
+}
+
+/// All on another thread, this runs an arbitrary task in between
+/// taking the lock and running gbt.
+///
+/// Rather than filling / updating the `HashMap` on the main thread,
+/// this allows for `HashMap` modifying tasks to be run before running and returning gbt results.
+///
+/// `thread_transactions` is a cloned `Arc` of the `Mutex` for the `HashMap` state.
+/// `callback` is a `'static + Send` `FnOnce` closure/function that takes a mutable reference
+/// to the `HashMap` as the only argument. (A move closure is recommended to meet the bounds)
+async fn run_task<F>(
+    thread_transactions: Arc<Mutex<ThreadTransactionsMap>>,
+    max_uid: usize,
+    callback: F,
+) -> Result<GbtResult>
+where
+    F: FnOnce(&mut ThreadTransactionsMap) + Send + 'static,
+{
+    debug!("Spawning thread...");
+    let handle = napi::tokio::task::spawn_blocking(move || {
+        debug!(
+            "Getting lock for thread_transactions from thread {:?}...",
+            std::thread::current().id()
+        );
+        let mut map = thread_transactions
+            .lock()
+            .map_err(|_| napi::Error::from_reason("THREAD_TRANSACTIONS Mutex poisoned"))?;
+        callback(&mut map);
+
+        info!("Starting gbt algorithm for {} elements...", map.len());
+        let result = gbt::gbt(&mut map, max_uid);
+        info!("Finished gbt algorithm for {} elements...", map.len());
+
+        debug!(
+            "Releasing lock for thread_transactions from thread {:?}...",
+            std::thread::current().id()
+        );
+        drop(map);
+
+        Ok(result)
+    });
+
+    handle
+        .await
+        .map_err(|_| napi::Error::from_reason("thread panicked"))?
+}
--- a/backend/rust-gbt/src/thread_transaction.rs
+++ b/backend/rust-gbt/src/thread_transaction.rs
@@ -0,0 +1,13 @@
+use napi_derive::napi;
+
+#[derive(Debug)]
+#[napi(object)]
+pub struct ThreadTransaction {
+    pub uid: u32,
+    pub order: u32,
+    pub fee: f64,
+    pub weight: u32,
+    pub sigops: u32,
+    pub effective_fee_per_vsize: f64,
+    pub inputs: Vec<u32>,
+}
--- a/backend/rust-gbt/src/u32_hasher_types.rs
+++ b/backend/rust-gbt/src/u32_hasher_types.rs
@@ -0,0 +1,132 @@
+use priority_queue::PriorityQueue;
+use std::{
+    collections::{HashMap, HashSet},
+    fmt::Debug,
+    hash::{BuildHasher, Hasher},
+};
+
+/// This is the only way to create a `HashMap` with the `U32HasherState` and capacity
+pub fn u32hashmap_with_capacity<V>(capacity: usize) -> HashMap<u32, V, U32HasherState> {
+    HashMap::with_capacity_and_hasher(capacity, U32HasherState(()))
+}
+
+/// This is the only way to create a `PriorityQueue` with the `U32HasherState` and capacity
+pub fn u32priority_queue_with_capacity<V: Ord>(
+    capacity: usize,
+) -> PriorityQueue<u32, V, U32HasherState> {
+    PriorityQueue::with_capacity_and_hasher(capacity, U32HasherState(()))
+}
+
+/// This is the only way to create a `HashSet` with the `U32HasherState`
+pub fn u32hashset_new() -> HashSet<u32, U32HasherState> {
+    HashSet::with_hasher(U32HasherState(()))
+}
+
+/// A private unit type is contained so no one can make an instance of it.
+#[derive(Clone)]
+pub struct U32HasherState(());
+
+impl Debug for U32HasherState {
+    fn fmt(&self, _: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        Ok(())
+    }
+}
+
+impl BuildHasher for U32HasherState {
+    type Hasher = U32Hasher;
+
+    fn build_hasher(&self) -> Self::Hasher {
+        U32Hasher(0)
+    }
+}
+
+/// This also can't be created outside this module due to private field.
+pub struct U32Hasher(u32);
+
+impl Hasher for U32Hasher {
+    fn finish(&self) -> u64 {
+        // Safety: Two u32s next to each other will make a u64
+        bytemuck::cast([self.0, 0])
+    }
+
+    fn write(&mut self, bytes: &[u8]) {
+        // Assert in debug builds (testing too) that only 4 byte keys (u32, i32, f32, etc.) run
+        debug_assert!(bytes.len() == 4);
+        // Safety: We know that the size of the key is 4 bytes
+        // We also know that the only way to get an instance of HashMap using this "hasher"
+        // is through the public functions in this module which set the key type to u32.
+        self.0 = *bytemuck::from_bytes(bytes);
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::U32HasherState;
+    use priority_queue::PriorityQueue;
+    use std::collections::HashMap;
+
+    #[test]
+    fn test_hashmap() {
+        let mut hm: HashMap<u32, String, U32HasherState> = HashMap::with_hasher(U32HasherState(()));
+
+        // Testing basic operations with the custom hasher
+        hm.insert(0, String::from("0"));
+        hm.insert(42, String::from("42"));
+        hm.insert(256, String::from("256"));
+        hm.insert(u32::MAX, String::from("MAX"));
+        hm.insert(u32::MAX >> 2, String::from("MAX >> 2"));
+
+        assert_eq!(hm.get(&0), Some(&String::from("0")));
+        assert_eq!(hm.get(&42), Some(&String::from("42")));
+        assert_eq!(hm.get(&256), Some(&String::from("256")));
+        assert_eq!(hm.get(&u32::MAX), Some(&String::from("MAX")));
+        assert_eq!(hm.get(&(u32::MAX >> 2)), Some(&String::from("MAX >> 2")));
+        assert_eq!(hm.get(&(u32::MAX >> 4)), None);
+        assert_eq!(hm.get(&3), None);
+        assert_eq!(hm.get(&43), None);
+    }
+
+    #[test]
+    fn test_priority_queue() {
+        let mut pq: PriorityQueue<u32, i32, U32HasherState> =
+            PriorityQueue::with_hasher(U32HasherState(()));
+
+        // Testing basic operations with the custom hasher
+        assert_eq!(pq.push(1, 5), None);
+        assert_eq!(pq.push(2, -10), None);
+        assert_eq!(pq.push(3, 7), None);
+        assert_eq!(pq.push(4, 20), None);
+        assert_eq!(pq.push(u32::MAX, -42), None);
+
+        assert_eq!(pq.push_increase(1, 4), Some(4));
+        assert_eq!(pq.push_increase(2, -8), Some(-10));
+        assert_eq!(pq.push_increase(3, 5), Some(5));
+        assert_eq!(pq.push_increase(4, 21), Some(20));
+        assert_eq!(pq.push_increase(u32::MAX, -99), Some(-99));
+        assert_eq!(pq.push_increase(42, 1337), None);
+
+        assert_eq!(pq.push_decrease(1, 4), Some(5));
+        assert_eq!(pq.push_decrease(2, -10), Some(-8));
+        assert_eq!(pq.push_decrease(3, 5), Some(7));
+        assert_eq!(pq.push_decrease(4, 20), Some(21));
+        assert_eq!(pq.push_decrease(u32::MAX, 100), Some(100));
+        assert_eq!(pq.push_decrease(69, 420), None);
+
+        assert_eq!(pq.peek(), Some((&42, &1337)));
+        assert_eq!(pq.pop(), Some((42, 1337)));
+        assert_eq!(pq.peek(), Some((&69, &420)));
+        assert_eq!(pq.pop(), Some((69, 420)));
+        assert_eq!(pq.peek(), Some((&4, &20)));
+        assert_eq!(pq.pop(), Some((4, 20)));
+        assert_eq!(pq.peek(), Some((&3, &5)));
+        assert_eq!(pq.pop(), Some((3, 5)));
+        assert_eq!(pq.peek(), Some((&1, &4)));
+        assert_eq!(pq.pop(), Some((1, 4)));
+        assert_eq!(pq.peek(), Some((&2, &-10)));
+        assert_eq!(pq.pop(), Some((2, -10)));
+        assert_eq!(pq.peek(), Some((&u32::MAX, &-42)));
+        assert_eq!(pq.pop(), Some((u32::MAX, -42)));
+        assert_eq!(pq.peek(), None);
+        assert_eq!(pq.pop(), None);
+    }
+}
--- a/backend/src/fixtures/mempool-config.template.json
+++ b/backend/src/fixtures/mempool-config.template.json
@@ -10,6 +10,7 @@
    "AUTOMATIC_BLOCK_REINDEXING": false,
    "POLL_RATE_MS": 3,
    "CACHE_DIR": "__MEMPOOL_CACHE_DIR__",
+    "CACHE_ENABLED": true,
    "CLEAR_PROTECTION_MINUTES": 4,
    "RECOMMENDED_FEE_PERCENTILE": 5,
    "BLOCK_WEIGHT_UNITS": 6,
@@ -27,9 +28,12 @@
    "AUDIT": true,
    "ADVANCED_GBT_AUDIT": true,
    "ADVANCED_GBT_MEMPOOL": true,
+    "RUST_GBT": false,
    "CPFP_INDEXING": true,
    "MAX_BLOCKS_BULK_QUERY": 999,
-    "DISK_CACHE_BLOCK_INTERVAL": 999
+    "DISK_CACHE_BLOCK_INTERVAL": 999,
+    "MAX_PUSH_TX_SIZE_WEIGHT": 4000000,
+    "ALLOW_UNREACHABLE": true
  },
  "CORE_RPC": {
    "HOST": "__CORE_RPC_HOST__",
@@ -118,5 +122,15 @@
  },
  "CLIGHTNING": {
    "SOCKET": "__CLIGHTNING_SOCKET__"
+  },
+  "REPLICATION": {
+    "ENABLED": false,
+    "AUDIT": false,
+    "AUDIT_START_HEIGHT": 774000,
+    "SERVERS": []
+  },
+  "REDIS": {
+    "ENABLED": false,
+    "UNIX_SOCKET_PATH": "/tmp/redis.sock"
  }
-}
+}
--- a/backend/src/tests/config.test.ts
+++ b/backend/src/tests/config.test.ts
@@ -23,6 +23,7 @@ describe('Mempool Backend Config', () => {
        AUTOMATIC_BLOCK_REINDEXING: false,
        POLL_RATE_MS: 2000,
        CACHE_DIR: './cache',
+        CACHE_ENABLED: true,
        CLEAR_PROTECTION_MINUTES: 20,
        RECOMMENDED_FEE_PERCENTILE: 50,
        BLOCK_WEIGHT_UNITS: 4000000,
@@ -40,9 +41,12 @@ describe('Mempool Backend Config', () => {
        AUDIT: false,
        ADVANCED_GBT_AUDIT: false,
        ADVANCED_GBT_MEMPOOL: false,
+        RUST_GBT: false,
        CPFP_INDEXING: false,
        MAX_BLOCKS_BULK_QUERY: 0,
        DISK_CACHE_BLOCK_INTERVAL: 6,
+        MAX_PUSH_TX_SIZE_WEIGHT: 400000,
+        ALLOW_UNREACHABLE: true,
      });

      expect(config.ELECTRUM).toStrictEqual({ HOST: '127.0.0.1', PORT: 3306, TLS_ENABLED: true });
@@ -117,6 +121,18 @@ describe('Mempool Backend Config', () => {
        GEOLITE2_ASN: '/usr/local/share/GeoIP/GeoLite2-ASN.mmdb',
        GEOIP2_ISP: '/usr/local/share/GeoIP/GeoIP2-ISP.mmdb'
      });
+
+      expect(config.REPLICATION).toStrictEqual({
+        ENABLED: false,
+        AUDIT: false,
+        AUDIT_START_HEIGHT: 774000,
+        SERVERS: []
+      });
+
+      expect(config.REDIS).toStrictEqual({
+        ENABLED: false,
+        UNIX_SOCKET_PATH: ''
+      });
    });
  });

@@ -150,6 +166,8 @@ describe('Mempool Backend Config', () => {
      expect(config.PRICE_DATA_SERVER).toStrictEqual(fixture.PRICE_DATA_SERVER);

      expect(config.EXTERNAL_DATA_SERVER).toStrictEqual(fixture.EXTERNAL_DATA_SERVER);
+
+      expect(config.REDIS).toStrictEqual(fixture.REDIS);
    });
  });

--- a/backend/src/tests/gbt/gbt-tests.ts
+++ b/backend/src/tests/gbt/gbt-tests.ts
@@ -0,0 +1,68 @@
+import fs from 'fs';
+import { GbtGenerator, ThreadTransaction } from '../../../rust-gbt';
+import path from 'path';
+
+const baseline = require('./test-data/target-template.json');
+const testVector = require('./test-data/test-data-ids.json');
+const vectorUidMap: Map<number, string> = new Map(testVector.map(x => [x[0], x[1]]));
+const vectorTxidMap: Map<string, number>  = new Map(testVector.map(x => [x[1], x[0]]));
+// Note that this test buffer is specially constructed
+// such that uids are assigned in numerical txid order
+// so that ties break the same way as in Core's implementation
+const vectorBuffer: Buffer = fs.readFileSync(path.join(__dirname, './', './test-data/test-buffer.bin'));
+
+describe('Rust GBT', () => {
+  test('should produce the same template as getBlockTemplate from Bitcoin Core', async () => {
+    const rustGbt = new GbtGenerator();
+    const { mempool, maxUid } = mempoolFromArrayBuffer(vectorBuffer.buffer);
+    const result = await rustGbt.make(mempool, maxUid);
+
+    const blocks: [string, number][][] = result.blocks.map(block => {
+      return block.map(uid => [vectorUidMap.get(uid) || 'missing', uid]);
+    });
+    const template = baseline.map(tx => [tx.txid, vectorTxidMap.get(tx.txid)]);
+
+    expect(blocks[0].length).toEqual(baseline.length);
+    expect(blocks[0]).toEqual(template);
+  });
+});
+
+function mempoolFromArrayBuffer(buf: ArrayBuffer): { mempool: ThreadTransaction[], maxUid: number } {
+  let maxUid = 0;
+  const view = new DataView(buf);
+  const count = view.getUint32(0, false);
+  const txs: ThreadTransaction[] = [];
+  let offset = 4;
+  for (let i = 0; i < count; i++) {
+    const uid = view.getUint32(offset, false);
+    maxUid = Math.max(maxUid, uid);
+    const tx: ThreadTransaction = {
+      uid,
+      order: txidToOrdering(vectorUidMap.get(uid) as string),
+      fee: view.getFloat64(offset + 4, false),
+      weight: view.getUint32(offset + 12, false),
+      sigops: view.getUint32(offset + 16, false),
+      // feePerVsize: view.getFloat64(offset + 20, false),
+      effectiveFeePerVsize: view.getFloat64(offset + 28, false),
+      inputs: [],
+    };
+    const numInputs = view.getUint32(offset + 36, false);
+    offset += 40;
+    for (let j = 0; j < numInputs; j++) {
+      tx.inputs.push(view.getUint32(offset, false));
+      offset += 4;
+    }
+    txs.push(tx);
+  }
+  return { mempool: txs, maxUid };
+}
+
+function txidToOrdering(txid: string): number {
+  return parseInt(
+    txid.substr(62, 2) +
+      txid.substr(60, 2) +
+      txid.substr(58, 2) +
+      txid.substr(56, 2),
+    16
+  );
+}
--- a/backend/src/tests/gbt/test-data/target-template.json
+++ b/backend/src/tests/gbt/test-data/target-template.json
--- a/backend/src/tests/gbt/test-data/test-buffer.bin
+++ b/backend/src/tests/gbt/test-data/test-buffer.bin
--- a/backend/src/tests/gbt/test-data/test-data-ids.json
+++ b/backend/src/tests/gbt/test-data/test-data-ids.json
--- a/backend/src/api/audit.ts
+++ b/backend/src/api/audit.ts
@@ -1,19 +1,21 @@
 import config from '../config';
 import logger from '../logger';
-import { TransactionExtended, MempoolBlockWithTransactions } from '../mempool.interfaces';
+import { MempoolTransactionExtended, MempoolBlockWithTransactions } from '../mempool.interfaces';
+import rbfCache from './rbf-cache';

 const PROPAGATION_MARGIN = 180; // in seconds, time since a transaction is first seen after which it is assumed to have propagated to all miners

 class Audit {
-  auditBlock(transactions: TransactionExtended[], projectedBlocks: MempoolBlockWithTransactions[], mempool: { [txId: string]: TransactionExtended })
-   : { censored: string[], added: string[], fresh: string[], sigop: string[], score: number, similarity: number } {
+  auditBlock(transactions: MempoolTransactionExtended[], projectedBlocks: MempoolBlockWithTransactions[], mempool: { [txId: string]: MempoolTransactionExtended })
+   : { censored: string[], added: string[], fresh: string[], sigop: string[], fullrbf: string[], score: number, similarity: number } {
    if (!projectedBlocks?.[0]?.transactionIds || !mempool) {
-      return { censored: [], added: [], fresh: [], sigop: [], score: 0, similarity: 1 };
+      return { censored: [], added: [], fresh: [], sigop: [], fullrbf: [], score: 0, similarity: 1 };
    }

    const matches: string[] = []; // present in both mined block and template
    const added: string[] = []; // present in mined block, not in template
-    const fresh: string[] = []; // missing, but firstSeen within PROPAGATION_MARGIN
+    const fresh: string[] = []; // missing, but firstSeen or lastBoosted within PROPAGATION_MARGIN
+    const fullrbf: string[] = []; // either missing or present, and part of a fullrbf replacement
    const isCensored = {}; // missing, without excuse
    const isDisplaced = {};
    let displacedWeight = 0;
@@ -34,8 +36,13 @@ class Audit {
    // look for transactions that were expected in the template, but missing from the mined block
    for (const txid of projectedBlocks[0].transactionIds) {
      if (!inBlock[txid]) {
-        // tx is recent, may have reached the miner too late for inclusion
-        if (mempool[txid]?.firstSeen != null && (now - (mempool[txid]?.firstSeen || 0)) <= PROPAGATION_MARGIN) {
+        if (rbfCache.isFullRbf(txid)) {
+          fullrbf.push(txid);
+        } else if (mempool[txid]?.firstSeen != null && (now - (mempool[txid]?.firstSeen || 0)) <= PROPAGATION_MARGIN) {
+          // tx is recent, may have reached the miner too late for inclusion
+          fresh.push(txid);
+        } else if (mempool[txid]?.lastBoosted != null && (now - (mempool[txid]?.lastBoosted || 0)) <= PROPAGATION_MARGIN) {
+          // tx was recently cpfp'd, miner may not have the latest effective rate
          fresh.push(txid);
        } else {
          isCensored[txid] = true;
@@ -91,7 +98,9 @@ class Audit {
      if (inTemplate[tx.txid]) {
        matches.push(tx.txid);
      } else {
-        if (!isDisplaced[tx.txid]) {
+        if (rbfCache.isFullRbf(tx.txid)) {
+          fullrbf.push(tx.txid);
+        } else if (!isDisplaced[tx.txid]) {
          added.push(tx.txid);
        }
        overflowWeight += tx.weight;
@@ -138,6 +147,7 @@ class Audit {
      added,
      fresh,
      sigop: [],
+      fullrbf,
      score,
      similarity,
    };
--- a/backend/src/api/bisq/bisq.ts
+++ b/backend/src/api/bisq/bisq.ts
@@ -7,7 +7,6 @@ import { SocksProxyAgent } from 'socks-proxy-agent';
 import { BisqBlocks, BisqBlock, BisqTransaction, BisqStats, BisqTrade } from './interfaces';
 import { Common } from '../common';
 import { BlockExtended } from '../../mempool.interfaces';
-import { StaticPool } from 'node-worker-threads-pool';
 import backendInfo from '../backend-info';
 import logger from '../../logger';

@@ -31,10 +30,6 @@ class Bisq {
  private priceUpdateCallbackFunction: ((price: number) => void) | undefined;
  private topDirectoryWatcher: fs.FSWatcher | undefined;
  private subdirectoryWatcher: fs.FSWatcher | undefined;
-  private jsonParsePool = new StaticPool({
-    size: 4,
-    task: (blob: string) => JSON.parse(blob),
-  });

  constructor() {}

--- a/backend/src/api/bitcoin/bitcoin-api-abstract-factory.ts
+++ b/backend/src/api/bitcoin/bitcoin-api-abstract-factory.ts
@@ -3,10 +3,12 @@ import { IEsploraApi } from './esplora-api.interface';
 export interface AbstractBitcoinApi {
  $getRawMempool(): Promise<IEsploraApi.Transaction['txid'][]>;
  $getRawTransaction(txId: string, skipConversion?: boolean, addPrevout?: boolean, lazyPrevouts?: boolean): Promise<IEsploraApi.Transaction>;
+  $getMempoolTransactions(lastTxid: string);
  $getTransactionHex(txId: string): Promise<string>;
  $getBlockHeightTip(): Promise<number>;
  $getBlockHashTip(): Promise<string>;
  $getTxIdsForBlock(hash: string): Promise<string[]>;
+  $getTxsForBlock(hash: string): Promise<IEsploraApi.Transaction[]>;
  $getBlockHash(height: number): Promise<string>;
  $getBlockHeader(hash: string): Promise<string>;
  $getBlock(hash: string): Promise<IEsploraApi.Block>;
@@ -14,6 +16,8 @@ export interface AbstractBitcoinApi {
  $getAddress(address: string): Promise<IEsploraApi.Address>;
  $getAddressTransactions(address: string, lastSeenTxId: string): Promise<IEsploraApi.Transaction[]>;
  $getAddressPrefix(prefix: string): string[];
+  $getScriptHash(scripthash: string): Promise<IEsploraApi.ScriptHash>;
+  $getScriptHashTransactions(address: string, lastSeenTxId: string): Promise<IEsploraApi.Transaction[]>;
  $sendRawTransaction(rawTransaction: string): Promise<string>;
  $getOutspend(txId: string, vout: number): Promise<IEsploraApi.Outspend>;
  $getOutspends(txId: string): Promise<IEsploraApi.Outspend[]>;
--- a/backend/src/api/bitcoin/bitcoin-api.ts
+++ b/backend/src/api/bitcoin/bitcoin-api.ts
@@ -5,6 +5,7 @@ import { IEsploraApi } from './esplora-api.interface';
 import blocks from '../blocks';
 import mempool from '../mempool';
 import { TransactionExtended } from '../../mempool.interfaces';
+import transactionUtils from '../transaction-utils';

 class BitcoinApi implements AbstractBitcoinApi {
  private rawMempoolCache: IBitcoinApi.RawMempool | null = null;
@@ -29,6 +30,7 @@ class BitcoinApi implements AbstractBitcoinApi {
      weight: block.weight,
      previousblockhash: block.previousblockhash,
      mediantime: block.mediantime,
+      stale: block.confirmations === -1,
    };
  }

@@ -58,23 +60,28 @@ class BitcoinApi implements AbstractBitcoinApi {
      });
  }

-  $getTransactionHex(txId: string): Promise<string> {
-    return this.$getRawTransaction(txId, true)
-      .then((tx) => tx.hex || '');
+  $getMempoolTransactions(lastTxid: string): Promise<IEsploraApi.Transaction[]> {
+    return Promise.resolve([]);
+  }
+
+  async $getTransactionHex(txId: string): Promise<string> {
+    const txInMempool = mempool.getMempool()[txId];
+    if (txInMempool && txInMempool.hex) {
+      return txInMempool.hex;
+    }
+
+    return this.bitcoindClient.getRawTransaction(txId, true)
+      .then((transaction: IBitcoinApi.Transaction) => {
+        return transaction.hex;
+      });
  }

  $getBlockHeightTip(): Promise<number> {
-    return this.bitcoindClient.getChainTips()
-      .then((result: IBitcoinApi.ChainTips[]) => {
-        return result.find(tip => tip.status === 'active')!.height;
-      });
+    return this.bitcoindClient.getBlockCount();
  }

  $getBlockHashTip(): Promise<string> {
-    return this.bitcoindClient.getChainTips()
-      .then((result: IBitcoinApi.ChainTips[]) => {
-        return result.find(tip => tip.status === 'active')!.hash;
-      });
+    return this.bitcoindClient.getBestBlockHash();
  }

  $getTxIdsForBlock(hash: string): Promise<string[]> {
@@ -82,6 +89,10 @@ class BitcoinApi implements AbstractBitcoinApi {
      .then((rpcBlock: IBitcoinApi.Block) => rpcBlock.tx);
  }

+  $getTxsForBlock(hash: string): Promise<IEsploraApi.Transaction[]> {
+    throw new Error('Method getTxsForBlock not supported by the Bitcoin RPC API.');
+  }
+
  $getRawBlock(hash: string): Promise<Buffer> {
    return this.bitcoindClient.getBlock(hash, 0)
      .then((raw: string) => Buffer.from(raw, "hex"));
@@ -113,6 +124,14 @@ class BitcoinApi implements AbstractBitcoinApi {
    throw new Error('Method getAddressTransactions not supported by the Bitcoin RPC API.');
  }

+  $getScriptHash(scripthash: string): Promise<IEsploraApi.ScriptHash> {
+    throw new Error('Method getScriptHash not supported by the Bitcoin RPC API.');
+  }
+
+  $getScriptHashTransactions(scripthash: string, lastSeenTxId: string): Promise<IEsploraApi.Transaction[]> {
+    throw new Error('Method getScriptHashTransactions not supported by the Bitcoin RPC API.');
+  }
+
  $getRawMempool(): Promise<IEsploraApi.Transaction['txid'][]> {
    return this.bitcoindClient.getRawMemPool();
  }
@@ -198,7 +217,7 @@ class BitcoinApi implements AbstractBitcoinApi {
        scriptpubkey: vout.scriptPubKey.hex,
        scriptpubkey_address: vout.scriptPubKey && vout.scriptPubKey.address ? vout.scriptPubKey.address
          : vout.scriptPubKey.addresses ? vout.scriptPubKey.addresses[0] : '',
-        scriptpubkey_asm: vout.scriptPubKey.asm ? this.convertScriptSigAsm(vout.scriptPubKey.hex) : '',
+        scriptpubkey_asm: vout.scriptPubKey.asm ? transactionUtils.convertScriptSigAsm(vout.scriptPubKey.hex) : '',
        scriptpubkey_type: this.translateScriptPubKeyType(vout.scriptPubKey.type),
      };
    });
@@ -208,7 +227,7 @@ class BitcoinApi implements AbstractBitcoinApi {
        is_coinbase: !!vin.coinbase,
        prevout: null,
        scriptsig: vin.scriptSig && vin.scriptSig.hex || vin.coinbase || '',
-        scriptsig_asm: vin.scriptSig && this.convertScriptSigAsm(vin.scriptSig.hex) || '',
+        scriptsig_asm: vin.scriptSig && transactionUtils.convertScriptSigAsm(vin.scriptSig.hex) || '',
        sequence: vin.sequence,
        txid: vin.txid || '',
        vout: vin.vout || 0,
@@ -280,7 +299,7 @@ class BitcoinApi implements AbstractBitcoinApi {
      }
      const innerTx = await this.$getRawTransaction(vin.txid, false, false);
      vin.prevout = innerTx.vout[vin.vout];
-      this.addInnerScriptsToVin(vin);
+      transactionUtils.addInnerScriptsToVin(vin);
    }
    return transaction;
  }
@@ -319,7 +338,7 @@ class BitcoinApi implements AbstractBitcoinApi {
      }
      const innerTx = await this.$getRawTransaction(transaction.vin[i].txid, false, false);
      transaction.vin[i].prevout = innerTx.vout[transaction.vin[i].vout];
-      this.addInnerScriptsToVin(transaction.vin[i]);
+      transactionUtils.addInnerScriptsToVin(transaction.vin[i]);
      totalIn += innerTx.vout[transaction.vin[i].vout].value;
    }
    if (lazyPrevouts && transaction.vin.length > 12) {
@@ -331,122 +350,6 @@ class BitcoinApi implements AbstractBitcoinApi {
    return transaction;
  }

-  private convertScriptSigAsm(hex: string): string {
-    const buf = Buffer.from(hex, 'hex');
-
-    const b: string[] = [];
-
-    let i = 0;
-    while (i < buf.length) {
-      const op = buf[i];
-      if (op >= 0x01 && op <= 0x4e) {
-        i++;
-        let push: number;
-        if (op === 0x4c) {
-          push = buf.readUInt8(i);
-          b.push('OP_PUSHDATA1');
-          i += 1;
-        } else if (op === 0x4d) {
-          push = buf.readUInt16LE(i);
-          b.push('OP_PUSHDATA2');
-          i += 2;
-        } else if (op === 0x4e) {
-          push = buf.readUInt32LE(i);
-          b.push('OP_PUSHDATA4');
-          i += 4;
-        } else {
-          push = op;
-          b.push('OP_PUSHBYTES_' + push);
-        }
-
-        const data = buf.slice(i, i + push);
-        if (data.length !== push) {
-          break;
-        }
-
-        b.push(data.toString('hex'));
-        i += data.length;
-      } else {
-        if (op === 0x00) {
-          b.push('OP_0');
-        } else if (op === 0x4f) {
-          b.push('OP_PUSHNUM_NEG1');
-        } else if (op === 0xb1) {
-          b.push('OP_CLTV');
-        } else if (op === 0xb2) {
-          b.push('OP_CSV');
-        } else if (op === 0xba) {
-          b.push('OP_CHECKSIGADD');
-        } else {
-          const opcode = bitcoinjs.script.toASM([ op ]);
-          if (opcode && op < 0xfd) {
-            if (/^OP_(\d+)$/.test(opcode)) {
-              b.push(opcode.replace(/^OP_(\d+)$/, 'OP_PUSHNUM_$1'));
-            } else {
-              b.push(opcode);
-            }
-          } else {
-            b.push('OP_RETURN_' + op);
-          }
-        }
-        i += 1;
-      }
-    }
-
-    return b.join(' ');
-  }
-
-  private addInnerScriptsToVin(vin: IEsploraApi.Vin): void {
-    if (!vin.prevout) {
-      return;
-    }
-
-    if (vin.prevout.scriptpubkey_type === 'p2sh') {
-      const redeemScript = vin.scriptsig_asm.split(' ').reverse()[0];
-      vin.inner_redeemscript_asm = this.convertScriptSigAsm(redeemScript);
-      if (vin.witness && vin.witness.length > 2) {
-        const witnessScript = vin.witness[vin.witness.length - 1];
-        vin.inner_witnessscript_asm = this.convertScriptSigAsm(witnessScript);
-      }
-    }
-
-    if (vin.prevout.scriptpubkey_type === 'v0_p2wsh' && vin.witness) {
-      const witnessScript = vin.witness[vin.witness.length - 1];
-      vin.inner_witnessscript_asm = this.convertScriptSigAsm(witnessScript);
-    }
-
-    if (vin.prevout.scriptpubkey_type === 'v1_p2tr' && vin.witness) {
-      const witnessScript = this.witnessToP2TRScript(vin.witness);
-      if (witnessScript !== null) {
-        vin.inner_witnessscript_asm = this.convertScriptSigAsm(witnessScript);
-      }
-    }
-  }
-
-  /**
-   * This function must only be called when we know the witness we are parsing
-   * is a taproot witness.
-   * @param witness An array of hex strings that represents the witness stack of
-   *                the input.
-   * @returns null if the witness is not a script spend, and the hex string of
-   *          the script item if it is a script spend.
-   */
-  private witnessToP2TRScript(witness: string[]): string | null {
-    if (witness.length < 2) return null;
-    // Note: see BIP341 for parsing details of witness stack
-
-    // If there are at least two witness elements, and the first byte of the
-    // last element is 0x50, this last element is called annex a and
-    // is removed from the witness stack.
-    const hasAnnex = witness[witness.length - 1].substring(0, 2) === '50';
-    // If there are at least two witness elements left, script path spending is used.
-    // Call the second-to-last stack element s, the script.
-    // (Note: this phrasing from BIP341 assumes we've *removed* the annex from the stack)
-    if (hasAnnex && witness.length < 3) return null;
-    const positionOfScript = hasAnnex ? witness.length - 3 : witness.length - 2;
-    return witness[positionOfScript];
-  }
-
 }

 export default BitcoinApi;
--- a/backend/src/api/bitcoin/bitcoin.routes.ts
+++ b/backend/src/api/bitcoin/bitcoin.routes.ts
@@ -121,7 +121,8 @@ class BitcoinRoutes {
          .get(config.MEMPOOL.API_URL_PREFIX + 'block-height/:height', this.getBlockHeight)
          .get(config.MEMPOOL.API_URL_PREFIX + 'address/:address', this.getAddress)
          .get(config.MEMPOOL.API_URL_PREFIX + 'address/:address/txs', this.getAddressTransactions)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'address/:address/txs/chain/:txId', this.getAddressTransactions)
+          .get(config.MEMPOOL.API_URL_PREFIX + 'scripthash/:scripthash', this.getScriptHash)
+          .get(config.MEMPOOL.API_URL_PREFIX + 'scripthash/:scripthash/txs', this.getScriptHashTransactions)
          .get(config.MEMPOOL.API_URL_PREFIX + 'address-prefix/:prefix', this.getAddressPrefix)
          ;
      }
@@ -546,15 +547,37 @@ class BitcoinRoutes {
    }
  }

-  private async getAddressTransactions(req: Request, res: Response) {
+  private async getAddressTransactions(req: Request, res: Response): Promise<void> {
    if (config.MEMPOOL.BACKEND === 'none') {
      res.status(405).send('Address lookups cannot be used with bitcoind as backend.');
      return;
    }

    try {
-      const transactions = await bitcoinApi.$getAddressTransactions(req.params.address, req.params.txId);
+      let lastTxId: string = '';
+      if (req.query.after_txid && typeof req.query.after_txid === 'string') {
+        lastTxId = req.query.after_txid;
+      }
+      const transactions = await bitcoinApi.$getAddressTransactions(req.params.address, lastTxId);
      res.json(transactions);
+    } catch (e) {
+      if (e instanceof Error && e.message && (e.message.indexOf('too long') > 0 || e.message.indexOf('confirmed status') > 0)) {
+        res.status(413).send(e instanceof Error ? e.message : e);
+        return;
+      }
+      res.status(500).send(e instanceof Error ? e.message : e);
+    }
+  }
+
+  private async getScriptHash(req: Request, res: Response) {
+    if (config.MEMPOOL.BACKEND === 'none') {
+      res.status(405).send('Address lookups cannot be used with bitcoind as backend.');
+      return;
+    }
+
+    try {
+      const addressData = await bitcoinApi.$getScriptHash(req.params.address);
+      res.json(addressData);
    } catch (e) {
      if (e instanceof Error && e.message && (e.message.indexOf('too long') > 0 || e.message.indexOf('confirmed status') > 0)) {
        return res.status(413).send(e instanceof Error ? e.message : e);
@@ -563,8 +586,26 @@ class BitcoinRoutes {
    }
  }

-  private async getAdressTxChain(req: Request, res: Response) {
-    res.status(501).send('Not implemented');
+  private async getScriptHashTransactions(req: Request, res: Response): Promise<void> {
+    if (config.MEMPOOL.BACKEND === 'none') {
+      res.status(405).send('Address lookups cannot be used with bitcoind as backend.');
+      return;
+    }
+
+    try {
+      let lastTxId: string = '';
+      if (req.query.after_txid && typeof req.query.after_txid === 'string') {
+        lastTxId = req.query.after_txid;
+      }
+      const transactions = await bitcoinApi.$getScriptHashTransactions(req.params.address, lastTxId);
+      res.json(transactions);
+    } catch (e) {
+      if (e instanceof Error && e.message && (e.message.indexOf('too long') > 0 || e.message.indexOf('confirmed status') > 0)) {
+        res.status(413).send(e instanceof Error ? e.message : e);
+        return;
+      }
+      res.status(500).send(e instanceof Error ? e.message : e);
+    }
  }

  private async getAddressPrefix(req: Request, res: Response) {
@@ -723,12 +764,7 @@ class BitcoinRoutes {
  private async $postTransaction(req: Request, res: Response) {
    res.setHeader('content-type', 'text/plain');
    try {
-      let rawTx;
-      if (typeof req.body === 'object') {
-        rawTx = Object.keys(req.body)[0];
-      } else {
-        rawTx = req.body;
-      }
+      const rawTx = Common.getTransactionFromRequest(req, false);
      const txIdResult = await bitcoinApi.$sendRawTransaction(rawTx);
      res.send(txIdResult);
    } catch (e: any) {
@@ -739,12 +775,8 @@ class BitcoinRoutes {

  private async $postTransactionForm(req: Request, res: Response) {
    res.setHeader('content-type', 'text/plain');
-    const matches = /tx=([a-z0-9]+)/.exec(req.body);
-    let txHex = '';
-    if (matches && matches[1]) {
-      txHex = matches[1];
-    }
    try {
+      const txHex = Common.getTransactionFromRequest(req, true);
      const txIdResult = await bitcoinClient.sendRawTransaction(txHex);
      res.send(txIdResult);
    } catch (e: any) {
--- a/backend/src/api/bitcoin/electrum-api.ts
+++ b/backend/src/api/bitcoin/electrum-api.ts
@@ -126,6 +126,77 @@ class BitcoindElectrsApi extends BitcoinApi implements AbstractBitcoinApi {
    }
  }

+  async $getScriptHash(scripthash: string): Promise<IEsploraApi.ScriptHash> {
+    try {
+      const balance = await this.electrumClient.blockchainScripthash_getBalance(scripthash);
+      let history = memoryCache.get<IElectrumApi.ScriptHashHistory[]>('Scripthash_getHistory', scripthash);
+      if (!history) {
+        history = await this.electrumClient.blockchainScripthash_getHistory(scripthash);
+        memoryCache.set('Scripthash_getHistory', scripthash, history, 2);
+      }
+
+      const unconfirmed = history ? history.filter((h) => h.fee).length : 0;
+
+      return {
+        'scripthash': scripthash,
+        'chain_stats': {
+          'funded_txo_count': 0,
+          'funded_txo_sum': balance.confirmed ? balance.confirmed : 0,
+          'spent_txo_count': 0,
+          'spent_txo_sum': balance.confirmed < 0 ? balance.confirmed : 0,
+          'tx_count': (history?.length || 0) - unconfirmed,
+        },
+        'mempool_stats': {
+          'funded_txo_count': 0,
+          'funded_txo_sum': balance.unconfirmed > 0 ? balance.unconfirmed : 0,
+          'spent_txo_count': 0,
+          'spent_txo_sum': balance.unconfirmed < 0 ? -balance.unconfirmed : 0,
+          'tx_count': unconfirmed,
+        },
+        'electrum': true,
+      };
+    } catch (e: any) {
+      throw new Error(typeof e === 'string' ? e : e && e.message || e);
+    }
+  }
+
+  async $getScriptHashTransactions(scripthash: string, lastSeenTxId?: string): Promise<IEsploraApi.Transaction[]> {
+    try {
+      loadingIndicators.setProgress('address-' + scripthash, 0);
+
+      const transactions: IEsploraApi.Transaction[] = [];
+      let history = memoryCache.get<IElectrumApi.ScriptHashHistory[]>('Scripthash_getHistory', scripthash);
+      if (!history) {
+        history = await this.electrumClient.blockchainScripthash_getHistory(scripthash);
+        memoryCache.set('Scripthash_getHistory', scripthash, history, 2);
+      }
+      if (!history) {
+        throw new Error('failed to get scripthash history');
+      }
+      history.sort((a, b) => (b.height || 9999999) - (a.height || 9999999));
+
+      let startingIndex = 0;
+      if (lastSeenTxId) {
+        const pos = history.findIndex((historicalTx) => historicalTx.tx_hash === lastSeenTxId);
+        if (pos) {
+          startingIndex = pos + 1;
+        }
+      }
+      const endIndex = Math.min(startingIndex + 10, history.length);
+
+      for (let i = startingIndex; i < endIndex; i++) {
+        const tx = await this.$getRawTransaction(history[i].tx_hash, false, true);
+        transactions.push(tx);
+        loadingIndicators.setProgress('address-' + scripthash, (i + 1) / endIndex * 100);
+      }
+
+      return transactions;
+    } catch (e: any) {
+      loadingIndicators.setProgress('address-' + scripthash, 100);
+      throw new Error(typeof e === 'string' ? e : e && e.message || e);
+    }
+  }
+
  private $getScriptHashBalance(scriptHash: string): Promise<IElectrumApi.ScriptHashBalance> {
    return this.electrumClient.blockchainScripthash_getBalance(this.encodeScriptHash(scriptHash));
  }
--- a/backend/src/api/bitcoin/esplora-api.interface.ts
+++ b/backend/src/api/bitcoin/esplora-api.interface.ts
@@ -89,6 +89,7 @@ export namespace IEsploraApi {
    weight: number;
    previousblockhash: string;
    mediantime: number;
+    stale: boolean;
  }

  export interface Address {
@@ -98,6 +99,13 @@ export namespace IEsploraApi {
    electrum?: boolean;
  }

+  export interface ScriptHash {
+    scripthash: string;
+    chain_stats: ChainStats;
+    mempool_stats: MempoolStats;
+    electrum?: boolean;
+  }
+
  export interface ChainStats {
    funded_txo_count: number;
    funded_txo_sum: number;
--- a/backend/src/api/bitcoin/esplora-api.ts
+++ b/backend/src/api/bitcoin/esplora-api.ts
@@ -69,6 +69,10 @@ class ElectrsApi implements AbstractBitcoinApi {
    return this.$queryWrapper<IEsploraApi.Transaction>(config.ESPLORA.REST_API_URL + '/tx/' + txId);
  }

+  async $getMempoolTransactions(lastSeenTxid?: string): Promise<IEsploraApi.Transaction[]> {
+    return this.$queryWrapper<IEsploraApi.Transaction[]>(config.ESPLORA.REST_API_URL + '/mempool/txs' + (lastSeenTxid ? '/' + lastSeenTxid : ''));
+  }
+
  $getTransactionHex(txId: string): Promise<string> {
    return this.$queryWrapper<string>(config.ESPLORA.REST_API_URL + '/tx/' + txId + '/hex');
  }
@@ -85,6 +89,10 @@ class ElectrsApi implements AbstractBitcoinApi {
    return this.$queryWrapper<string[]>(config.ESPLORA.REST_API_URL + '/block/' + hash + '/txids');
  }

+  $getTxsForBlock(hash: string): Promise<IEsploraApi.Transaction[]> {
+    return this.$queryWrapper<IEsploraApi.Transaction[]>(config.ESPLORA.REST_API_URL + '/block/' + hash + '/txs');
+  }
+
  $getBlockHash(height: number): Promise<string> {
    return this.$queryWrapper<string>(config.ESPLORA.REST_API_URL + '/block-height/' + height);
  }
@@ -110,6 +118,14 @@ class ElectrsApi implements AbstractBitcoinApi {
    throw new Error('Method getAddressTransactions not implemented.');
  }

+  $getScriptHash(scripthash: string): Promise<IEsploraApi.ScriptHash> {
+    throw new Error('Method getScriptHash not implemented.');
+  }
+
+  $getScriptHashTransactions(scripthash: string, txId?: string): Promise<IEsploraApi.Transaction[]> {
+    throw new Error('Method getScriptHashTransactions not implemented.');
+  }
+
  $getAddressPrefix(prefix: string): string[] {
    throw new Error('Method not implemented.');
  }
--- a/backend/src/api/blocks.ts
+++ b/backend/src/api/blocks.ts
@@ -25,6 +25,9 @@ import DifficultyAdjustmentsRepository from '../repositories/DifficultyAdjustmen
 import PricesRepository from '../repositories/PricesRepository';
 import priceUpdater from '../tasks/price-updater';
 import chainTips from './chain-tips';
+import websocketHandler from './websocket-handler';
+import redisCache from './redis-cache';
+import rbfCache from './rbf-cache';

 class Blocks {
  private blocks: BlockExtended[] = [];
@@ -34,7 +37,7 @@ class Blocks {
  private lastDifficultyAdjustmentTime = 0;
  private previousDifficultyRetarget = 0;
  private newBlockCallbacks: ((block: BlockExtended, txIds: string[], transactions: TransactionExtended[]) => void)[] = [];
-  private newAsyncBlockCallbacks: ((block: BlockExtended, txIds: string[], transactions: TransactionExtended[]) => Promise<void>)[] = [];
+  private newAsyncBlockCallbacks: ((block: BlockExtended, txIds: string[], transactions: MempoolTransactionExtended[]) => Promise<void>)[] = [];

  private mainLoopTimeout: number = 120000;

@@ -60,7 +63,7 @@ class Blocks {
    this.newBlockCallbacks.push(fn);
  }

-  public setNewAsyncBlockCallback(fn: (block: BlockExtended, txIds: string[], transactions: TransactionExtended[]) => Promise<void>) {
+  public setNewAsyncBlockCallback(fn: (block: BlockExtended, txIds: string[], transactions: MempoolTransactionExtended[]) => Promise<void>) {
    this.newAsyncBlockCallbacks.push(fn);
  }

@@ -69,69 +72,90 @@ class Blocks {
   * @param blockHash
   * @param blockHeight
   * @param onlyCoinbase - Set to true if you only need the coinbase transaction
+   * @param txIds - optional ordered list of transaction ids if already known
+   * @param quiet - don't print non-essential logs
+   * @param addMempoolData - calculate sigops etc
   * @returns Promise<TransactionExtended[]>
   */
  private async $getTransactionsExtended(
    blockHash: string,
    blockHeight: number,
    onlyCoinbase: boolean,
+    txIds: string[] | null = null,
    quiet: boolean = false,
    addMempoolData: boolean = false,
  ): Promise<TransactionExtended[]> {
-    const transactions: TransactionExtended[] = [];
-    const txIds: string[] = await bitcoinApi.$getTxIdsForBlock(blockHash);
+    const isEsplora = config.MEMPOOL.BACKEND === 'esplora';
+    const transactionMap: { [txid: string]: TransactionExtended } = {};
+
+    if (!txIds) {
+      txIds = await bitcoinApi.$getTxIdsForBlock(blockHash);
+    }

    const mempool = memPool.getMempool();
-    let transactionsFound = 0;
-    let transactionsFetched = 0;
+    let foundInMempool = 0;
+    let totalFound = 0;

-    for (let i = 0; i < txIds.length; i++) {
-      if (mempool[txIds[i]]) {
-        // We update blocks before the mempool (index.ts), therefore we can
-        // optimize here by directly fetching txs in the "outdated" mempool
-        transactions.push(mempool[txIds[i]]);
-        transactionsFound++;
-      } else if (config.MEMPOOL.BACKEND === 'esplora' || !memPool.hasPriority() || i === 0) {
-        // Otherwise we fetch the tx data through backend services (esplora, electrum, core rpc...)
-        if (!quiet && (i % (Math.round((txIds.length) / 10)) === 0 || i + 1 === txIds.length)) { // Avoid log spam
-          logger.debug(`Indexing tx ${i + 1} of ${txIds.length} in block #${blockHeight}`);
-        }
-        try {
-          const tx = await transactionUtils.$getTransactionExtended(txIds[i], false, false, false, addMempoolData);
-          transactions.push(tx);
-          transactionsFetched++;
-        } catch (e) {
-          try {
-            if (config.MEMPOOL.BACKEND === 'esplora') {
-              // Try again with core
-              const tx = await transactionUtils.$getTransactionExtended(txIds[i], false, false, true, addMempoolData);
-              transactions.push(tx);
-              transactionsFetched++;
-            } else {
-              throw e;
-            }
-          } catch (e) {
-            if (i === 0) {
-              const msg = `Cannot fetch coinbase tx ${txIds[i]}. Reason: ` + (e instanceof Error ? e.message : e); 
-              logger.err(msg);
-              throw new Error(msg);
-            } else {
-              logger.err(`Cannot fetch tx ${txIds[i]}. Reason: ` + (e instanceof Error ? e.message : e));
-            }
-          }
+    // Copy existing transactions from the mempool
+    if (!onlyCoinbase) {
+      for (const txid of txIds) {
+        if (mempool[txid]) {
+          transactionMap[txid] = mempool[txid];
+          foundInMempool++;
+          totalFound++;
        }
      }
+    }

-      if (onlyCoinbase === true) {
-        break; // Fetch the first transaction and exit
+    // Skip expensive lookups while mempool has priority
+    if (onlyCoinbase) {
+      try {
+        const coinbase = await transactionUtils.$getTransactionExtended(txIds[0], false, false, false, addMempoolData);
+        return [coinbase];
+      } catch (e) {
+        const msg = `Cannot fetch coinbase tx ${txIds[0]}. Reason: ` + (e instanceof Error ? e.message : e);
+        logger.err(msg);
+        throw new Error(msg);
+      }
+    }
+
+    // Fetch remaining txs in bulk
+    if (isEsplora && (txIds.length - totalFound > 500)) {
+      try {
+        const rawTransactions = await bitcoinApi.$getTxsForBlock(blockHash);
+        for (const tx of rawTransactions) {
+          if (!transactionMap[tx.txid]) {
+            transactionMap[tx.txid] = addMempoolData ? transactionUtils.extendMempoolTransaction(tx) : transactionUtils.extendTransaction(tx);
+            totalFound++;
+          }
+        }
+      } catch (e) {
+        logger.err(`Cannot fetch bulk txs for block ${blockHash}. Reason: ` + (e instanceof Error ? e.message : e));
+      }
+    }
+
+    // Fetch remaining txs individually
+    for (const txid of txIds.filter(txid => !transactionMap[txid])) {
+      if (!transactionMap[txid]) {
+        if (!quiet && (totalFound % (Math.round((txIds.length) / 10)) === 0 || totalFound + 1 === txIds.length)) { // Avoid log spam
+          logger.debug(`Indexing tx ${totalFound + 1} of ${txIds.length} in block #${blockHeight}`);
+        }
+        try {
+          const tx = await transactionUtils.$getTransactionExtended(txid, false, false, false, addMempoolData);
+          transactionMap[txid] = tx;
+          totalFound++;
+        } catch (e) {
+          logger.err(`Cannot fetch tx ${txid}. Reason: ` + (e instanceof Error ? e.message : e));
+        }
      }
    }

    if (!quiet) {
-      logger.debug(`${transactionsFound} of ${txIds.length} found in mempool. ${transactionsFetched} fetched through backend service.`);
+      logger.debug(`${foundInMempool} of ${txIds.length} found in mempool. ${totalFound - foundInMempool} fetched through backend service.`);
    }

-    return transactions;
+    // Return list of transactions, preserving block order
+    return txIds.map(txid => transactionMap[txid]).filter(tx => tx != null);
  }

  /**
@@ -167,7 +191,9 @@ class Blocks {

  private convertLiquidFees(block: IBitcoinApi.VerboseBlock): IBitcoinApi.VerboseBlock {
    block.tx.forEach(tx => {
-      tx.fee = Object.values(tx.fee || {}).reduce((total, output) => total + output, 0);
+      if (!isFinite(Number(tx.fee))) {
+        tx.fee = Object.values(tx.fee || {}).reduce((total, output) => total + output, 0);
+      }
    });
    return block;
  }
@@ -553,7 +579,7 @@ class Blocks {
          }
          const blockHash = await bitcoinApi.$getBlockHash(blockHeight);
          const block: IEsploraApi.Block = await bitcoinCoreApi.$getBlock(blockHash);
-          const transactions = await this.$getTransactionsExtended(blockHash, block.height, true, true);
+          const transactions = await this.$getTransactionsExtended(blockHash, block.height, true, null, true);
          const blockExtended = await this.$getBlockExtended(block, transactions);

          newlyIndexed++;
@@ -585,7 +611,7 @@ class Blocks {

    let fastForwarded = false;
    let handledBlocks = 0;
-    const blockHeightTip = await bitcoinApi.$getBlockHeightTip();
+    const blockHeightTip = await bitcoinCoreApi.$getBlockHeightTip();
    this.updateTimerProgress(timer, 'got block height tip');

    if (this.blocks.length === 0) {
@@ -638,11 +664,11 @@ class Blocks {
      }

      this.updateTimerProgress(timer, `getting block data for ${this.currentBlockHeight}`);
-      const blockHash = await bitcoinApi.$getBlockHash(this.currentBlockHeight);
+      const blockHash = await bitcoinCoreApi.$getBlockHash(this.currentBlockHeight);
      const verboseBlock = await bitcoinClient.getBlock(blockHash, 2);
      const block = BitcoinApi.convertBlock(verboseBlock);
-      const txIds: string[] = await bitcoinApi.$getTxIdsForBlock(blockHash);
-      const transactions = await this.$getTransactionsExtended(blockHash, block.height, false, false, true);
+      const txIds: string[] = verboseBlock.tx.map(tx => tx.txid);
+      const transactions = await this.$getTransactionsExtended(blockHash, block.height, false, txIds, false, true) as MempoolTransactionExtended[];
      if (config.MEMPOOL.BACKEND !== 'esplora') {
        // fill in missing transaction fee data from verboseBlock
        for (let i = 0; i < transactions.length; i++) {
@@ -656,10 +682,6 @@ class Blocks {
      const blockSummary: BlockSummary = this.summarizeBlockTransactions(block.id, cpfpSummary.transactions);
      this.updateTimerProgress(timer, `got block data for ${this.currentBlockHeight}`);

-      // start async callbacks
-      this.updateTimerProgress(timer, `starting async callbacks for ${this.currentBlockHeight}`);
-      const callbackPromises = this.newAsyncBlockCallbacks.map((cb) => cb(blockExtended, txIds, transactions));
-
      if (Common.indexingEnabled()) {
        if (!fastForwarded) {
          const lastBlock = await blocksRepository.$getBlockByHeight(blockExtended.height - 1);
@@ -671,9 +693,11 @@ class Blocks {
            await BlocksRepository.$deleteBlocksFrom(lastBlock.height - 10);
            await HashratesRepository.$deleteLastEntries();
            await cpfpRepository.$deleteClustersFrom(lastBlock.height - 10);
+            this.blocks = this.blocks.slice(0, -10);
            this.updateTimerProgress(timer, `rolled back chain divergence from ${this.currentBlockHeight}`);
            for (let i = 10; i >= 0; --i) {
              const newBlock = await this.$indexBlock(lastBlock.height - i);
+              this.blocks.push(newBlock);
              this.updateTimerProgress(timer, `reindexed block`);
              let cpfpSummary;
              if (config.MEMPOOL.CPFP_INDEXING) {
@@ -688,6 +712,8 @@ class Blocks {
            this.updateTimerProgress(timer, `reindexed difficulty adjustments`);
            logger.info(`Re-indexed 10 blocks and summaries. Also re-indexed the last difficulty adjustments. Will re-index latest hashrates in a few seconds.`, logger.tags.mining);
            indexer.reindex();
+
+            websocketHandler.handleReorg();
          }
        }

@@ -722,6 +748,10 @@ class Blocks {
        }
      }

+      // start async callbacks
+      this.updateTimerProgress(timer, `starting async callbacks for ${this.currentBlockHeight}`);
+      const callbackPromises = this.newAsyncBlockCallbacks.map((cb) => cb(blockExtended, txIds, transactions));
+
      if (block.height % 2016 === 0) {
        if (Common.indexingEnabled()) {
          await DifficultyAdjustmentsRepository.$saveAdjustments({
@@ -755,10 +785,18 @@ class Blocks {
      if (this.newBlockCallbacks.length) {
        this.newBlockCallbacks.forEach((cb) => cb(blockExtended, txIds, transactions));
      }
-      if (!memPool.hasPriority() && (block.height % config.MEMPOOL.DISK_CACHE_BLOCK_INTERVAL === 0)) {
+      if (config.MEMPOOL.CACHE_ENABLED && !memPool.hasPriority() && (block.height % config.MEMPOOL.DISK_CACHE_BLOCK_INTERVAL === 0)) {
        diskCache.$saveCacheToDisk();
      }

+      // Update Redis cache
+      if (config.REDIS.ENABLED) {
+        await redisCache.$updateBlocks(this.blocks);
+        await redisCache.$updateBlockSummaries(this.blockSummaries);
+        await redisCache.$removeTransactions(txIds);
+        await rbfCache.updateCache();
+      }
+
      handledBlocks++;
    }

@@ -814,6 +852,16 @@ class Blocks {
    return blockExtended;
  }

+  public async $indexStaleBlock(hash: string): Promise<BlockExtended> {
+    const block: IEsploraApi.Block = await bitcoinCoreApi.$getBlock(hash);
+    const transactions = await this.$getTransactionsExtended(hash, block.height, true);
+    const blockExtended = await this.$getBlockExtended(block, transactions);
+
+    blockExtended.canonical = await bitcoinApi.$getBlockHash(block.height);
+
+    return blockExtended;
+  }
+
  /**
   * Get one block by its hash
   */
@@ -831,7 +879,11 @@ class Blocks {

    // Bitcoin network, add our custom data on top
    const block: IEsploraApi.Block = await bitcoinCoreApi.$getBlock(hash);
-    return await this.$indexBlock(block.height);
+    if (block.stale) {
+      return await this.$indexStaleBlock(hash);
+    } else {
+      return await this.$indexBlock(block.height);
+    }
  }

  public async $getStrippedBlockTransactions(hash: string, skipMemoryCache = false,
@@ -855,7 +907,7 @@ class Blocks {

    let height = blockHeight;
    let summary: BlockSummary;
-    if (cpfpSummary) {
+    if (cpfpSummary && !Common.isLiquid()) {
      summary = {
        id: hash,
        transactions: cpfpSummary.transactions.map(tx => {
--- a/backend/src/api/common.ts
+++ b/backend/src/api/common.ts
@@ -1,3 +1,5 @@
+import * as bitcoinjs from 'bitcoinjs-lib';
+import { Request } from 'express';
 import { Ancestor, CpfpInfo, CpfpSummary, CpfpCluster, EffectiveFeeStats, MempoolBlockWithTransactions, TransactionExtended, MempoolTransactionExtended, TransactionStripped, WorkingEffectiveFeeStats } from '../mempool.interfaces';
 import config from '../config';
 import { NodeSocket } from '../repositories/NodesSocketsRepository';
@@ -86,19 +88,19 @@ export class Common {
        const match = spendMap.get(`${vin.txid}:${vin.vout}`);
        if (match && match.txid !== tx.txid) {
          replaced.add(match);
+          // remove this tx from the spendMap
+          // prevents the same tx being replaced more than once
+          for (const replacedVin of match.vin) {
+            const key = `${replacedVin.txid}:${replacedVin.vout}`;
+            spendMap.delete(key);
+          }
        }
+        const key = `${vin.txid}:${vin.vout}`;
+        spendMap.delete(key);
      }
      if (replaced.size) {
        matches[tx.txid] = { replaced: Array.from(replaced), replacedBy: tx };
      }
-      // remove this tx from the spendMap
-      // prevents the same tx being replaced more than once
-      for (const vin of tx.vin) {
-        const key = `${vin.txid}:${vin.vout}`;
-        if (spendMap.get(key)?.txid === tx.txid) {
-          spendMap.delete(key);
-        }
-      }
    }
    return matches;
  }
@@ -511,6 +513,115 @@ export class Common {
  static getNthPercentile(n: number, sortedDistribution: any[]): any {
    return sortedDistribution[Math.floor((sortedDistribution.length - 1) * (n / 100))];
  }
+
+  static getTransactionFromRequest(req: Request, form: boolean): string {
+    let rawTx: any = typeof req.body === 'object' && form
+      ? Object.values(req.body)[0] as any
+      : req.body;
+    if (typeof rawTx !== 'string') {
+      throw Object.assign(new Error('Non-string request body'), { code: -1 });
+    }
+
+    // Support both upper and lower case hex
+    // Support both txHash= Form and direct API POST
+    const reg = form ? /^txHash=((?:[a-fA-F0-9]{2})+)$/ : /^((?:[a-fA-F0-9]{2})+)$/;
+    const matches = reg.exec(rawTx);
+    if (!matches || !matches[1]) {
+      throw Object.assign(new Error('Non-hex request body'), { code: -2 });
+    }
+
+    // Guaranteed to be a hex string of multiple of 2
+    // Guaranteed to be lower case
+    // Guaranteed to pass validation (see function below)
+    return this.validateTransactionHex(matches[1].toLowerCase());
+  }
+
+  private static validateTransactionHex(txhex: string): string {
+    // Do not mutate txhex
+
+    // We assume txhex to be valid hex (output of getTransactionFromRequest above)
+
+    // Check 1: Valid transaction parse
+    let tx: bitcoinjs.Transaction;
+    try {
+      tx = bitcoinjs.Transaction.fromHex(txhex);
+    } catch(e) {
+      throw Object.assign(new Error('Invalid transaction (could not parse)'), { code: -4 });
+    }
+
+    // Check 2: Simple size check
+    if (tx.weight() > config.MEMPOOL.MAX_PUSH_TX_SIZE_WEIGHT) {
+      throw Object.assign(new Error(`Transaction too large (max ${config.MEMPOOL.MAX_PUSH_TX_SIZE_WEIGHT} weight units)`), { code: -3 });
+    }
+
+    // Check 3: Check unreachable script in taproot (if not allowed)
+    if (!config.MEMPOOL.ALLOW_UNREACHABLE) {
+      tx.ins.forEach(input => {
+        const witness = input.witness;
+        // See BIP 341: Script validation rules
+        const hasAnnex = witness.length >= 2 &&
+          witness[witness.length - 1][0] === 0x50;
+        const scriptSpendMinLength = hasAnnex ? 3 : 2;
+        const maybeScriptSpend = witness.length >= scriptSpendMinLength;
+
+        if (maybeScriptSpend) {
+          const controlBlock = witness[witness.length - scriptSpendMinLength + 1];
+          if (controlBlock.length === 0 || !this.isValidLeafVersion(controlBlock[0])) {
+            // Skip this input, it's not taproot
+            return;
+          }
+          // Definitely taproot. Get script
+          const script = witness[witness.length - scriptSpendMinLength];
+          const decompiled = bitcoinjs.script.decompile(script);
+          if (!decompiled || decompiled.length < 2) {
+            // Skip this input
+            return;
+          }
+          // Iterate up to second last (will look ahead 1 item)
+          for (let i = 0; i < decompiled.length - 1; i++) {
+            const first = decompiled[i];
+            const second = decompiled[i + 1];
+            if (
+              first === bitcoinjs.opcodes.OP_FALSE &&
+              second === bitcoinjs.opcodes.OP_IF
+            ) {
+              throw Object.assign(new Error('Unreachable taproot scripts not allowed'), { code: -5 });
+            }
+          }
+        }
+      })
+    }
+
+    // Pass through the input string untouched
+    return txhex;
+  }
+
+  private static isValidLeafVersion(leafVersion: number): boolean {
+    // See Note 7 in BIP341
+    // https://github.com/bitcoin/bips/blob/66a1a8151021913047934ebab3f8883f2f8ca75b/bip-0341.mediawiki#cite_note-7
+    // "What constraints are there on the leaf version?"
+
+    // Must be an integer between 0 and 255
+    // Since we're parsing a byte
+    if (Math.floor(leafVersion) !== leafVersion || leafVersion < 0 || leafVersion > 255) {
+      return false;
+    }
+    // "the leaf version cannot be odd"
+    if ((leafVersion & 0x01) === 1) {
+      return false;
+    }
+    // "The values that comply to this rule are
+    // the 32 even values between 0xc0 and 0xfe
+    if (leafVersion >= 0xc0 && leafVersion <= 0xfe) {
+      return true;
+    }
+    // and also 0x66, 0x7e, 0x80, 0x84, 0x96, 0x98, 0xba, 0xbc, 0xbe."
+    if ([0x66, 0x7e, 0x80, 0x84, 0x96, 0x98, 0xba, 0xbc, 0xbe].includes(leafVersion)) {
+      return true;
+    }
+    // Otherwise, invalid
+    return false;
+  }
 }

 /**
--- a/backend/src/api/database-migration.ts
+++ b/backend/src/api/database-migration.ts
@@ -7,7 +7,7 @@ import cpfpRepository from '../repositories/CpfpRepository';
 import { RowDataPacket } from 'mysql2';

 class DatabaseMigration {
-  private static currentVersion = 62;
+  private static currentVersion = 64;
  private queryTimeout = 3600_000;
  private statisticsAddedIndexed = false;
  private uniqueLogs: string[] = [];
@@ -539,6 +539,15 @@ class DatabaseMigration {
      await this.updateToSchemaVersion(62);
    }

+    if (databaseSchemaVersion < 63 && isBitcoin === true) {
+      await this.$executeQuery('ALTER TABLE `blocks_audits` ADD fullrbf_txs JSON DEFAULT "[]"');
+      await this.updateToSchemaVersion(63);
+    }
+
+    if (databaseSchemaVersion < 64 && isBitcoin === true) {
+      await this.$executeQuery('ALTER TABLE `nodes` ADD features text NULL');
+      await this.updateToSchemaVersion(64);
+    }
  }

  /**
--- a/backend/src/api/disk-cache.ts
+++ b/backend/src/api/disk-cache.ts
@@ -29,7 +29,7 @@ class DiskCache {
  };

  constructor() {
-    if (!cluster.isPrimary) {
+    if (!cluster.isPrimary || !config.MEMPOOL.CACHE_ENABLED) {
      return;
    }
    process.on('SIGINT', (e) => {
@@ -39,7 +39,7 @@ class DiskCache {
  }

  async $saveCacheToDisk(sync: boolean = false): Promise<void> {
-    if (!cluster.isPrimary) {
+    if (!cluster.isPrimary || !config.MEMPOOL.CACHE_ENABLED) {
      return;
    }
    if (this.isWritingCache) {
@@ -175,7 +175,7 @@ class DiskCache {
  }

  async $loadMempoolCache(): Promise<void> {
-    if (!fs.existsSync(DiskCache.FILE_NAME)) {
+    if (!config.MEMPOOL.CACHE_ENABLED || !fs.existsSync(DiskCache.FILE_NAME)) {
      return;
    }
    try {
@@ -195,6 +195,7 @@ class DiskCache {

        if (data.mempoolArray) {
          for (const tx of data.mempoolArray) {
+            delete tx.uid;
            data.mempool[tx.txid] = tx;
          }
        }
@@ -207,6 +208,7 @@ class DiskCache {
            const cacheData2 = JSON.parse(fs.readFileSync(fileName, 'utf8'));
            if (cacheData2.mempoolArray) {
              for (const tx of cacheData2.mempoolArray) {
+                delete tx.uid;
                data.mempool[tx.txid] = tx;
              }
            } else {
--- a/backend/src/api/explorer/channels.api.ts
+++ b/backend/src/api/explorer/channels.api.ts
@@ -80,7 +80,7 @@ class ChannelsApi {

  public async $searchChannelsById(search: string): Promise<any[]> {
    try {
-      const searchStripped = search.replace('%', '') + '%';
+      const searchStripped = search.replace(/[^0-9x]/g, '') + '%';
      const query = `SELECT id, short_id, capacity, status FROM channels WHERE id LIKE ? OR short_id LIKE ? LIMIT 10`;
      const [rows]: any = await DB.query(query, [searchStripped, searchStripped]);
      return rows;
@@ -117,6 +117,26 @@ class ChannelsApi {
    }
  }

+  public async $getPenaltyClosedChannels(): Promise<any[]> {
+    try {
+      const query = `
+        SELECT n1.alias AS alias_left,
+          n2.alias AS alias_right,
+          channels.*
+        FROM channels
+        LEFT JOIN nodes AS n1 ON n1.public_key = channels.node1_public_key
+        LEFT JOIN nodes AS n2 ON n2.public_key = channels.node2_public_key
+        WHERE channels.status = 2 AND channels.closing_reason = 3
+        ORDER BY closing_date DESC
+      `;
+      const [rows]: any = await DB.query(query);
+      return rows;
+    } catch (e) {
+      logger.err('$getPenaltyClosedChannels error: ' + (e instanceof Error ? e.message : e));
+      throw e;
+    }
+  }
+
  public async $getUnresolvedClosedChannels(): Promise<any[]> {
    try {
      const query = `SELECT * FROM channels WHERE status = 2 AND closing_reason = 2 AND closing_resolved = 0 AND closing_transaction_id != ''`;
--- a/backend/src/api/explorer/channels.routes.ts
+++ b/backend/src/api/explorer/channels.routes.ts
@@ -11,6 +11,7 @@ class ChannelsRoutes {
      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/channels/search/:search', this.$searchChannelsById)
      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/channels/:short_id', this.$getChannel)
      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/channels', this.$getChannelsForNode)
+      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/penalties', this.$getPenaltyClosedChannels)
      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/channels-geo', this.$getAllChannelsGeo)
      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/channels-geo/:publicKey', this.$getAllChannelsGeo)
    ;
@@ -108,6 +109,18 @@ class ChannelsRoutes {
    }
  }

+  private async $getPenaltyClosedChannels(req: Request, res: Response): Promise<void> {
+    try {
+      const channels = await channelsApi.$getPenaltyClosedChannels();
+      res.header('Pragma', 'public');
+      res.header('Cache-control', 'public');
+      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
+      res.json(channels);
+    } catch (e) {
+      res.status(500).send(e instanceof Error ? e.message : e);
+    }
+  }
+
  private async $getAllChannelsGeo(req: Request, res: Response) {
    try {
      const style: string = typeof req.query.style === 'string' ? req.query.style : '';
--- a/backend/src/api/explorer/nodes.api.ts
+++ b/backend/src/api/explorer/nodes.api.ts
@@ -3,6 +3,7 @@ import DB from '../../database';
 import { ResultSetHeader } from 'mysql2';
 import { ILightningApi } from '../lightning/lightning-api.interface';
 import { ITopNodesPerCapacity, ITopNodesPerChannels } from '../../mempool.interfaces';
+import { bin2hex } from '../../utils/format';

 class NodesApi {
  public async $getWorldNodes(): Promise<any> {
@@ -56,7 +57,8 @@ class NodesApi {
          UNIX_TIMESTAMP(updated_at) AS updated_at, color, sockets as sockets,
          as_number, city_id, country_id, subdivision_id, longitude, latitude,
          geo_names_iso.names as iso_code, geo_names_as.names as as_organization, geo_names_city.names as city,
-          geo_names_country.names as country, geo_names_subdivision.names as subdivision
+          geo_names_country.names as country, geo_names_subdivision.names as subdivision,
+          features
        FROM nodes
        LEFT JOIN geo_names geo_names_as on geo_names_as.id = as_number
        LEFT JOIN geo_names geo_names_city on geo_names_city.id = city_id
@@ -76,6 +78,23 @@ class NodesApi {
      node.city = JSON.parse(node.city);
      node.country = JSON.parse(node.country);

+      // Features      
+      node.features = JSON.parse(node.features);
+      node.featuresBits = null;
+      if (node.features) {
+        let maxBit = 0;
+        for (const feature of node.features) {
+          maxBit = Math.max(maxBit, feature.bit);
+        }
+        maxBit = Math.ceil(maxBit / 4) * 4 - 1;
+        
+        node.featuresBits = new Array(maxBit + 1).fill(0);
+        for (const feature of node.features) {
+          node.featuresBits[feature.bit] = 1;
+        }
+        node.featuresBits = bin2hex(node.featuresBits.reverse().join(''));
+      }
+
      // Active channels and capacity
      const activeChannelsStats: any = await this.$getActiveChannelsStats(public_key);
      node.active_channel_count = activeChannelsStats.active_channel_count ?? 0;
@@ -656,10 +675,19 @@ class NodesApi {
          alias_search,
          color,
          sockets,
-          status
+          status,
+          features
        )
-        VALUES (?, NOW(), FROM_UNIXTIME(?), ?, ?, ?, ?, 1)
-        ON DUPLICATE KEY UPDATE updated_at = FROM_UNIXTIME(?), alias = ?, alias_search = ?, color = ?, sockets = ?, status = 1`;
+        VALUES (?, NOW(), FROM_UNIXTIME(?), ?, ?, ?, ?, 1, ?)
+        ON DUPLICATE KEY UPDATE
+          updated_at = FROM_UNIXTIME(?),
+          alias = ?,
+          alias_search = ?,
+          color = ?,
+          sockets = ?,
+          status = 1,
+          features = ?
+      `;

      await DB.query(query, [
        node.pub_key,
@@ -668,11 +696,13 @@ class NodesApi {
        this.aliasToSearchText(node.alias),
        node.color,
        sockets,
+        JSON.stringify(node.features),
        node.last_update,
        node.alias,
        this.aliasToSearchText(node.alias),
        node.color,
        sockets,
+        JSON.stringify(node.features),
      ]);
    } catch (e) {
      logger.err('$saveNode() error: ' + (e instanceof Error ? e.message : e));
--- a/backend/src/api/lightning/clightning/clightning-convert.ts
+++ b/backend/src/api/lightning/clightning/clightning-convert.ts
@@ -2,8 +2,91 @@ import { ILightningApi } from '../lightning-api.interface';
 import FundingTxFetcher from '../../../tasks/lightning/sync-tasks/funding-tx-fetcher';
 import logger from '../../../logger';
 import { Common } from '../../common';
+import { hex2bin } from '../../../utils/format';
 import config from '../../../config';

+// https://github.com/lightningnetwork/lnd/blob/master/lnwire/features.go
+export enum FeatureBits {
+	DataLossProtectRequired = 0,
+	DataLossProtectOptional = 1,
+	InitialRoutingSync = 3,
+	UpfrontShutdownScriptRequired = 4,
+	UpfrontShutdownScriptOptional = 5,
+	GossipQueriesRequired = 6,
+	GossipQueriesOptional = 7,
+	TLVOnionPayloadRequired = 8,
+	TLVOnionPayloadOptional = 9,
+	StaticRemoteKeyRequired = 12,
+	StaticRemoteKeyOptional = 13,
+	PaymentAddrRequired = 14,
+	PaymentAddrOptional = 15,
+	MPPRequired = 16,
+	MPPOptional = 17,
+	WumboChannelsRequired = 18,
+	WumboChannelsOptional = 19,
+	AnchorsRequired = 20,
+	AnchorsOptional = 21,
+	AnchorsZeroFeeHtlcTxRequired = 22,
+	AnchorsZeroFeeHtlcTxOptional = 23,
+	ShutdownAnySegwitRequired = 26,
+	ShutdownAnySegwitOptional = 27,
+	AMPRequired = 30,
+	AMPOptional = 31,
+	ExplicitChannelTypeRequired = 44,
+	ExplicitChannelTypeOptional = 45,
+	ScidAliasRequired = 46,
+	ScidAliasOptional = 47,
+	PaymentMetadataRequired = 48,
+	PaymentMetadataOptional = 49,
+	ZeroConfRequired = 50,
+	ZeroConfOptional = 51,
+	KeysendRequired = 54,
+	KeysendOptional = 55,
+	ScriptEnforcedLeaseRequired = 2022,
+	ScriptEnforcedLeaseOptional = 2023,
+	MaxBolt11Feature = 5114,
+};
+  
+export const FeaturesMap = new Map<FeatureBits, string>([
+	[FeatureBits.DataLossProtectRequired, 'data-loss-protect'],
+	[FeatureBits.DataLossProtectOptional, 'data-loss-protect'],
+	[FeatureBits.InitialRoutingSync, 'initial-routing-sync'],
+	[FeatureBits.UpfrontShutdownScriptRequired, 'upfront-shutdown-script'],
+	[FeatureBits.UpfrontShutdownScriptOptional, 'upfront-shutdown-script'],
+	[FeatureBits.GossipQueriesRequired, 'gossip-queries'],
+	[FeatureBits.GossipQueriesOptional, 'gossip-queries'],
+	[FeatureBits.TLVOnionPayloadRequired, 'tlv-onion'],
+	[FeatureBits.TLVOnionPayloadOptional, 'tlv-onion'],
+	[FeatureBits.StaticRemoteKeyOptional, 'static-remote-key'],
+	[FeatureBits.StaticRemoteKeyRequired, 'static-remote-key'],
+	[FeatureBits.PaymentAddrOptional, 'payment-addr'],
+	[FeatureBits.PaymentAddrRequired, 'payment-addr'],
+	[FeatureBits.MPPOptional, 'multi-path-payments'],
+	[FeatureBits.MPPRequired, 'multi-path-payments'],
+	[FeatureBits.AnchorsRequired, 'anchor-commitments'],
+	[FeatureBits.AnchorsOptional, 'anchor-commitments'],
+	[FeatureBits.AnchorsZeroFeeHtlcTxRequired, 'anchors-zero-fee-htlc-tx'],
+	[FeatureBits.AnchorsZeroFeeHtlcTxOptional, 'anchors-zero-fee-htlc-tx'],
+	[FeatureBits.WumboChannelsRequired, 'wumbo-channels'],
+	[FeatureBits.WumboChannelsOptional, 'wumbo-channels'],
+	[FeatureBits.AMPRequired, 'amp'],
+	[FeatureBits.AMPOptional, 'amp'],
+	[FeatureBits.PaymentMetadataOptional, 'payment-metadata'],
+	[FeatureBits.PaymentMetadataRequired, 'payment-metadata'],
+	[FeatureBits.ExplicitChannelTypeOptional, 'explicit-commitment-type'],
+	[FeatureBits.ExplicitChannelTypeRequired, 'explicit-commitment-type'],
+	[FeatureBits.KeysendOptional, 'keysend'],
+	[FeatureBits.KeysendRequired, 'keysend'],
+	[FeatureBits.ScriptEnforcedLeaseRequired, 'script-enforced-lease'],
+	[FeatureBits.ScriptEnforcedLeaseOptional, 'script-enforced-lease'],
+	[FeatureBits.ScidAliasRequired, 'scid-alias'],
+	[FeatureBits.ScidAliasOptional, 'scid-alias'],
+	[FeatureBits.ZeroConfRequired, 'zero-conf'],
+	[FeatureBits.ZeroConfOptional, 'zero-conf'],
+	[FeatureBits.ShutdownAnySegwitRequired, 'shutdown-any-segwit'],
+	[FeatureBits.ShutdownAnySegwitOptional, 'shutdown-any-segwit'],
+]);
+
 /**
 * Convert a clightning "listnode" entry to a lnd node entry
 */
@@ -17,10 +100,36 @@ export function convertNode(clNode: any): ILightningApi.Node {
      custom_records = undefined;
    }
  }
+
+  const nodeFeatures: ILightningApi.Feature[] = [];
+  const nodeFeaturesBinary = hex2bin(clNode.features).split('').reverse().join('');
+
+  for (let i = 0; i < nodeFeaturesBinary.length; i++) {
+    if (nodeFeaturesBinary[i] === '0') {
+      continue;
+    }
+    const feature = FeaturesMap.get(i);
+    if (!feature) {
+      nodeFeatures.push({
+        bit: i,
+        name: 'unknown',
+        is_required: i % 2 === 0,
+        is_known: false
+      });
+    } else {
+      nodeFeatures.push({
+        bit: i,
+        name: feature,
+        is_required: i % 2 === 0,
+        is_known: true
+      });
+    }
+  }
+
  return {
    alias: clNode.alias ?? '',
    color: `#${clNode.color ?? ''}`,
-    features: [], // TODO parse and return clNode.feature
+    features: nodeFeatures,
    pub_key: clNode.nodeid,
    addresses: clNode.addresses?.map((addr) => {
      let address = addr.address;
@@ -108,7 +217,7 @@ async function buildFullChannel(clChannelA: any, clChannelB: any): Promise<ILigh

  return {
    channel_id: Common.channelShortIdToIntegerId(clChannelA.short_channel_id),
-    capacity: clChannelA.satoshis,
+    capacity: (clChannelA.amount_msat / 1000).toString(),
    last_update: lastUpdate,
    node1_policy: convertPolicy(clChannelA),
    node2_policy: convertPolicy(clChannelB),
@@ -132,7 +241,7 @@ async function buildIncompleteChannel(clChannel: any): Promise<ILightningApi.Cha

  return {
    channel_id: Common.channelShortIdToIntegerId(clChannel.short_channel_id),
-    capacity: clChannel.satoshis,
+    capacity: (clChannel.amount_msat / 1000).toString(),
    last_update: clChannel.last_update ?? 0,
    node1_policy: convertPolicy(clChannel),
    node2_policy: null,
@@ -148,8 +257,8 @@ async function buildIncompleteChannel(clChannel: any): Promise<ILightningApi.Cha
 function convertPolicy(clChannel: any): ILightningApi.RoutingPolicy {
  return {
    time_lock_delta: clChannel.delay,
-    min_htlc: clChannel.htlc_minimum_msat.slice(0, -4),
-    max_htlc_msat: clChannel.htlc_maximum_msat.slice(0, -4),
+    min_htlc: clChannel.htlc_minimum_msat.toString(),
+    max_htlc_msat: clChannel.htlc_maximum_msat.toString(),
    fee_base_msat: clChannel.base_fee_millisatoshi,
    fee_rate_milli_msat: clChannel.fee_per_millionth,
    disabled: !clChannel.active,
--- a/backend/src/api/lightning/lightning-api.interface.ts
+++ b/backend/src/api/lightning/lightning-api.interface.ts
@@ -79,6 +79,7 @@ export namespace ILightningApi {
  }

  export interface Feature {
+    bit: number;
    name: string;
    is_required: boolean;
    is_known: boolean;
--- a/backend/src/api/lightning/lnd/lnd-api.ts
+++ b/backend/src/api/lightning/lnd/lnd-api.ts
@@ -41,8 +41,23 @@ class LndApi implements AbstractLightningApi {
  }

  async $getNetworkGraph(): Promise<ILightningApi.NetworkGraph> {
-    return axios.get<ILightningApi.NetworkGraph>(config.LND.REST_API_URL + '/v1/graph', this.axiosConfig)
+    const graph = await axios.get<ILightningApi.NetworkGraph>(config.LND.REST_API_URL + '/v1/graph', this.axiosConfig)
      .then((response) => response.data);
+
+    for (const node of graph.nodes) {
+      const nodeFeatures: ILightningApi.Feature[] = [];
+      for (const bit in node.features) {        
+        nodeFeatures.push({
+          bit: parseInt(bit, 10),
+          name: node.features[bit].name,  
+          is_required: node.features[bit].is_required,
+          is_known: node.features[bit].is_known,
+        });
+      }
+      node.features = nodeFeatures;
+    }
+
+    return graph;
  }
 }

--- a/backend/src/api/mempool-blocks.ts
+++ b/backend/src/api/mempool-blocks.ts
@@ -1,3 +1,4 @@
+import { GbtGenerator, GbtResult, ThreadTransaction as RustThreadTransaction } from '../../rust-gbt';
 import logger from '../logger';
 import { MempoolBlock, MempoolTransactionExtended, TransactionStripped, MempoolBlockWithTransactions, MempoolBlockDelta, Ancestor, CompactThreadTransaction, EffectiveFeeStats } from '../mempool.interfaces';
 import { Common, OnlineFeeStatsCalculator } from './common';
@@ -5,16 +6,18 @@ import config from '../config';
 import { Worker } from 'worker_threads';
 import path from 'path';

+const MAX_UINT32 = Math.pow(2, 32) - 1;
+
 class MempoolBlocks {
  private mempoolBlocks: MempoolBlockWithTransactions[] = [];
  private mempoolBlockDeltas: MempoolBlockDelta[] = [];
  private txSelectionWorker: Worker | null = null;
+  private rustInitialized: boolean = false;
+  private rustGbtGenerator: GbtGenerator = new GbtGenerator();

  private nextUid: number = 1;
  private uidMap: Map<number, string> = new Map(); // map short numerical uids to full txids

-  constructor() {}
-
  public getMempoolBlocks(): MempoolBlock[] {
    return this.mempoolBlocks.map((block) => {
      return {
@@ -40,9 +43,7 @@ class MempoolBlocks {
    const latestMempool = memPool;
    const memPoolArray: MempoolTransactionExtended[] = [];
    for (const i in latestMempool) {
-      if (latestMempool.hasOwnProperty(i)) {
-        memPoolArray.push(latestMempool[i]);
-      }
+      memPoolArray.push(latestMempool[i]);
    }
    const start = new Date().getTime();

@@ -218,16 +219,17 @@ class MempoolBlocks {
    // to reduce the overhead of passing this data to the worker thread
    const strippedMempool: Map<number, CompactThreadTransaction> = new Map();
    Object.values(newMempool).forEach(entry => {
-      if (entry.uid != null) {
-        strippedMempool.set(entry.uid, {
+      if (entry.uid !== null && entry.uid !== undefined) {
+        const stripped = {
          uid: entry.uid,
          fee: entry.fee,
          weight: (entry.adjustedVsize * 4),
          sigops: entry.sigops,
          feePerVsize: entry.adjustedFeePerVsize || entry.feePerVsize,
          effectiveFeePerVsize: entry.effectiveFeePerVsize || entry.adjustedFeePerVsize || entry.feePerVsize,
-          inputs: entry.vin.map(v => this.getUid(newMempool[v.txid])).filter(uid => uid != null) as number[],
-        });
+          inputs: entry.vin.map(v => this.getUid(newMempool[v.txid])).filter(uid => (uid !== null && uid !== undefined)) as number[],
+        };
+        strippedMempool.set(entry.uid, stripped);
      }
    });

@@ -260,8 +262,10 @@ class MempoolBlocks {
      // clean up thread error listener
      this.txSelectionWorker?.removeListener('error', threadErrorListener);

-      const processed = this.processBlockTemplates(newMempool, blocks, rates, clusters, saveResults);
+      const processed = this.processBlockTemplates(newMempool, blocks, null, Object.entries(rates), Object.values(clusters), saveResults);
+
      logger.debug(`makeBlockTemplates completed in ${(Date.now() - start)/1000} seconds`);
+
      return processed;
    } catch (e) {
      logger.err('makeBlockTemplates failed. ' + (e instanceof Error ? e.message : e));
@@ -279,12 +283,12 @@ class MempoolBlocks {
    const start = Date.now();

    for (const tx of Object.values(added)) {
-      this.setUid(tx);
+      this.setUid(tx, true);
    }
-    const removedUids = removed.map(tx => this.getUid(tx)).filter(uid => uid != null) as number[];
+    const removedUids = removed.map(tx => this.getUid(tx)).filter(uid => (uid !== null && uid !== undefined)) as number[];
    // prepare a stripped down version of the mempool with only the minimum necessary data
    // to reduce the overhead of passing this data to the worker thread
-    const addedStripped: CompactThreadTransaction[] = added.filter(entry => entry.uid != null).map(entry => {
+    const addedStripped: CompactThreadTransaction[] = added.filter(entry => (entry.uid !== null && entry.uid !== undefined)).map(entry => {
      return {
        uid: entry.uid || 0,
        fee: entry.fee,
@@ -292,7 +296,7 @@ class MempoolBlocks {
        sigops: entry.sigops,
        feePerVsize: entry.adjustedFeePerVsize || entry.feePerVsize,
        effectiveFeePerVsize: entry.effectiveFeePerVsize || entry.adjustedFeePerVsize || entry.feePerVsize,
-        inputs: entry.vin.map(v => this.getUid(newMempool[v.txid])).filter(uid => uid != null) as number[],
+        inputs: entry.vin.map(v => this.getUid(newMempool[v.txid])).filter(uid => (uid !== null && uid !== undefined)) as number[],
      };
    });

@@ -314,84 +318,131 @@ class MempoolBlocks {
      // clean up thread error listener
      this.txSelectionWorker?.removeListener('error', threadErrorListener);

-      this.processBlockTemplates(newMempool, blocks, rates, clusters, saveResults);
+      this.processBlockTemplates(newMempool, blocks, null, Object.entries(rates), Object.values(clusters), saveResults);
      logger.debug(`updateBlockTemplates completed in ${(Date.now() - start) / 1000} seconds`);
    } catch (e) {
      logger.err('updateBlockTemplates failed. ' + (e instanceof Error ? e.message : e));
    }
  }

-  private processBlockTemplates(mempool, blocks: string[][], rates: { [root: string]: number }, clusters: { [root: string]: string[] }, saveResults): MempoolBlockWithTransactions[] {
-    for (const txid of Object.keys(rates)) {
+  private resetRustGbt(): void {
+    this.rustInitialized = false;
+    this.rustGbtGenerator = new GbtGenerator();
+  }
+
+  private async $rustMakeBlockTemplates(newMempool: { [txid: string]: MempoolTransactionExtended }, saveResults: boolean = false): Promise<MempoolBlockWithTransactions[]> {
+    const start = Date.now();
+
+    // reset mempool short ids
+    if (saveResults) {
+      this.resetUids();
+    }
+    // set missing short ids
+    for (const tx of Object.values(newMempool)) {
+      this.setUid(tx, !saveResults);
+    }
+    // set short ids for transaction inputs
+    for (const tx of Object.values(newMempool)) {
+      tx.inputs = tx.vin.map(v => this.getUid(newMempool[v.txid])).filter(uid => (uid !== null && uid !== undefined)) as number[];
+    }
+
+    // run the block construction algorithm in a separate thread, and wait for a result
+    const rustGbt = saveResults ? this.rustGbtGenerator : new GbtGenerator();
+    try {
+      const { blocks, blockWeights, rates, clusters } = this.convertNapiResultTxids(
+        await rustGbt.make(Object.values(newMempool) as RustThreadTransaction[], this.nextUid),
+      );
+      if (saveResults) {
+        this.rustInitialized = true;
+      }
+      const processed = this.processBlockTemplates(newMempool, blocks, blockWeights, rates, clusters, saveResults);
+      logger.debug(`RUST makeBlockTemplates completed in ${(Date.now() - start)/1000} seconds`);
+      return processed;
+    } catch (e) {
+      logger.err('RUST makeBlockTemplates failed. ' + (e instanceof Error ? e.message : e));
+      if (saveResults) {
+        this.resetRustGbt();
+      }
+    }
+    return this.mempoolBlocks;
+  }
+
+  public async $oneOffRustBlockTemplates(newMempool: { [txid: string]: MempoolTransactionExtended }): Promise<MempoolBlockWithTransactions[]> {
+    return this.$rustMakeBlockTemplates(newMempool, false);
+  }
+
+  public async $rustUpdateBlockTemplates(newMempool: { [txid: string]: MempoolTransactionExtended }, mempoolSize: number, added: MempoolTransactionExtended[], removed: MempoolTransactionExtended[]): Promise<void> {
+    // GBT optimization requires that uids never get too sparse
+    // as a sanity check, we should also explicitly prevent uint32 uid overflow
+    if (this.nextUid + added.length >= Math.min(Math.max(262144, 2 * mempoolSize), MAX_UINT32)) {
+      this.resetRustGbt();
+    }
+    if (!this.rustInitialized) {
+      // need to reset the worker
+      await this.$rustMakeBlockTemplates(newMempool, true);
+      return;
+    }
+
+    const start = Date.now();
+    // set missing short ids
+    for (const tx of added) {
+      this.setUid(tx, true);
+    }
+    // set short ids for transaction inputs
+    for (const tx of added) {
+      tx.inputs = tx.vin.map(v => this.getUid(newMempool[v.txid])).filter(uid => (uid !== null && uid !== undefined)) as number[];
+    }
+    const removedUids = removed.map(tx => this.getUid(tx)).filter(uid => (uid !== null && uid !== undefined)) as number[];
+
+    // run the block construction algorithm in a separate thread, and wait for a result
+    try {
+      const { blocks, blockWeights, rates, clusters } = this.convertNapiResultTxids(
+        await this.rustGbtGenerator.update(
+          added as RustThreadTransaction[],
+          removedUids,
+          this.nextUid,
+        ),
+      );
+      const resultMempoolSize = blocks.reduce((total, block) => total + block.length, 0);
+      if (mempoolSize !== resultMempoolSize) {
+        throw new Error('GBT returned wrong number of transactions, cache is probably out of sync');
+      } else {
+        this.processBlockTemplates(newMempool, blocks, blockWeights, rates, clusters, true);
+      }
+      this.removeUids(removedUids);
+      logger.debug(`RUST updateBlockTemplates completed in ${(Date.now() - start)/1000} seconds`);
+    } catch (e) {
+      logger.err('RUST updateBlockTemplates failed. ' + (e instanceof Error ? e.message : e));
+      this.resetRustGbt();
+    }
+  }
+
+  private processBlockTemplates(mempool: { [txid: string]: MempoolTransactionExtended }, blocks: string[][], blockWeights: number[] | null, rates: [string, number][], clusters: string[][], saveResults): MempoolBlockWithTransactions[] {
+    for (const [txid, rate] of rates) {
      if (txid in mempool) {
-        mempool[txid].effectiveFeePerVsize = rates[txid];
+        mempool[txid].effectiveFeePerVsize = rate;
+        mempool[txid].cpfpChecked = false;
      }
    }

+    const lastBlockIndex = blocks.length - 1;
    let hasBlockStack = blocks.length >= 8;
    let stackWeight;
    let feeStatsCalculator: OnlineFeeStatsCalculator | void;
    if (hasBlockStack) {
-      stackWeight = blocks[blocks.length - 1].reduce((total, tx) => total + (mempool[tx]?.weight || 0), 0);
+      if (blockWeights && blockWeights[7] !== null) {
+        stackWeight = blockWeights[7];
+      } else {
+        stackWeight = blocks[lastBlockIndex].reduce((total, tx) => total + (mempool[tx]?.weight || 0), 0);
+      }
      hasBlockStack = stackWeight > config.MEMPOOL.BLOCK_WEIGHT_UNITS;
      feeStatsCalculator = new OnlineFeeStatsCalculator(stackWeight, 0.5, [10, 20, 30, 40, 50, 60, 70, 80, 90]);
    }

-    const readyBlocks: { transactionIds, transactions, totalSize, totalWeight, totalFees, feeStats }[] = [];
-    const sizeLimit = (config.MEMPOOL.BLOCK_WEIGHT_UNITS / 4) * 1.2;
-    // update this thread's mempool with the results
-    for (let blockIndex = 0; blockIndex < blocks.length; blockIndex++) {
-      const block: string[] = blocks[blockIndex];
-      let txid: string;
-      let mempoolTx: MempoolTransactionExtended;
-      let totalSize = 0;
-      let totalVsize = 0;
-      let totalWeight = 0;
-      let totalFees = 0;
-      const transactions: MempoolTransactionExtended[] = [];
-      for (let txIndex = 0; txIndex < block.length; txIndex++) {
-        txid = block[txIndex];
-        if (txid) {
-          mempoolTx = mempool[txid];
-          // save position in projected blocks
-          mempoolTx.position = {
-            block: blockIndex,
-            vsize: totalVsize + (mempoolTx.vsize / 2),
-          };
-          mempoolTx.ancestors = [];
-          mempoolTx.descendants = [];
-          mempoolTx.bestDescendant = null;
-          mempoolTx.cpfpChecked = true;
-
-          // online calculation of stack-of-blocks fee stats
-          if (hasBlockStack && blockIndex === blocks.length - 1 && feeStatsCalculator) {
-            feeStatsCalculator.processNext(mempoolTx);
-          }
-
-          totalSize += mempoolTx.size;
-          totalVsize += mempoolTx.vsize;
-          totalWeight += mempoolTx.weight;
-          totalFees += mempoolTx.fee;
-
-          if (totalVsize <= sizeLimit) {
-            transactions.push(mempoolTx);
-          }
-        }
-      }
-      readyBlocks.push({
-        transactionIds: block,
-        transactions,
-        totalSize,
-        totalWeight,
-        totalFees,
-        feeStats: (hasBlockStack && blockIndex === blocks.length - 1 && feeStatsCalculator) ? feeStatsCalculator.getRawFeeStats() : undefined,
-      });
-    }
-
-    for (const cluster of Object.values(clusters)) {
+    for (const cluster of clusters) {
      for (const memberTxid of cluster) {
-        if (memberTxid in mempool) {
-          const mempoolTx = mempool[memberTxid];
+        const mempoolTx = mempool[memberTxid];
+        if (mempoolTx) {
          const ancestors: Ancestor[] = [];
          const descendants: Ancestor[] = [];
          let matched = false;
@@ -406,20 +457,68 @@ class MempoolBlocks {
              };
              if (matched) {
                descendants.push(relative);
+                mempoolTx.lastBoosted = Math.max(mempoolTx.lastBoosted || 0, mempool[txid].firstSeen || 0);
              } else {
                ancestors.push(relative);
              }
            }
          });
-          mempoolTx.ancestors = ancestors;
-          mempoolTx.descendants = descendants;
-          mempoolTx.bestDescendant = null;
+          Object.assign(mempoolTx, {ancestors, descendants, bestDescendant: null, cpfpChecked: true});
        }
      }
    }

-    const mempoolBlocks = readyBlocks.map((b, index) => {
-      return this.dataToMempoolBlocks(b.transactionIds, b.transactions, b.totalSize, b.totalWeight, b.totalFees, b.feeStats);
+    const sizeLimit = (config.MEMPOOL.BLOCK_WEIGHT_UNITS / 4) * 1.2;
+    // update this thread's mempool with the results
+    let mempoolTx: MempoolTransactionExtended;
+    const mempoolBlocks: MempoolBlockWithTransactions[] = blocks.map((block, blockIndex) => {
+      let totalSize = 0;
+      let totalVsize = 0;
+      let totalWeight = 0;
+      let totalFees = 0;
+      const transactions: MempoolTransactionExtended[] = [];
+      for (const txid of block) {
+        if (txid) {
+          mempoolTx = mempool[txid];
+          // save position in projected blocks
+          mempoolTx.position = {
+            block: blockIndex,
+            vsize: totalVsize + (mempoolTx.vsize / 2),
+          };
+          if (!mempoolTx.cpfpChecked) {
+            if (mempoolTx.ancestors?.length) {
+              mempoolTx.ancestors = [];
+            }
+            if (mempoolTx.descendants?.length) {
+              mempoolTx.descendants = [];
+            }
+            mempoolTx.bestDescendant = null;
+            mempoolTx.cpfpChecked = true;
+          }
+
+          // online calculation of stack-of-blocks fee stats
+          if (hasBlockStack && blockIndex === lastBlockIndex && feeStatsCalculator) {
+            feeStatsCalculator.processNext(mempoolTx);
+          }
+
+          totalSize += mempoolTx.size;
+          totalVsize += mempoolTx.vsize;
+          totalWeight += mempoolTx.weight;
+          totalFees += mempoolTx.fee;
+
+          if (totalVsize <= sizeLimit) {
+            transactions.push(mempoolTx);
+          }
+        }
+      }
+      return this.dataToMempoolBlocks(
+        block,
+        transactions,
+        totalSize,
+        totalWeight,
+        totalFees,
+        (hasBlockStack && blockIndex === lastBlockIndex && feeStatsCalculator) ? feeStatsCalculator.getRawFeeStats() : undefined,
+      );
    });

    if (saveResults) {
@@ -452,16 +551,20 @@ class MempoolBlocks {
    this.nextUid = 1;
  }

-  private setUid(tx: MempoolTransactionExtended): number {
-    const uid = this.nextUid;
-    this.nextUid++;
-    this.uidMap.set(uid, tx.txid);
-    tx.uid = uid;
-    return uid;
+  private setUid(tx: MempoolTransactionExtended, skipSet = false): number {
+    if (tx.uid === null || tx.uid === undefined || !skipSet) {
+      const uid = this.nextUid;
+      this.nextUid++;
+      this.uidMap.set(uid, tx.txid);
+      tx.uid = uid;
+      return uid;
+    } else {
+      return tx.uid;
+    }
  }

  private getUid(tx: MempoolTransactionExtended): number | void {
-    if (tx?.uid != null && this.uidMap.has(tx.uid)) {
+    if (tx?.uid !== null && tx?.uid !== undefined && this.uidMap.has(tx.uid)) {
      return tx.uid;
    }
  }
@@ -496,6 +599,28 @@ class MempoolBlocks {
    }
    return { blocks: convertedBlocks, rates: convertedRates, clusters: convertedClusters } as { blocks: string[][], rates: { [root: string]: number }, clusters: { [root: string]: string[] }};
  }
+
+  private convertNapiResultTxids({ blocks, blockWeights, rates, clusters }: GbtResult)
+    : { blocks: string[][], blockWeights: number[], rates: [string, number][], clusters: string[][] } {
+    const convertedBlocks: string[][] = blocks.map(block => block.map(uid => {
+      const txid = this.uidMap.get(uid);
+      if (txid !== undefined) {
+        return txid;
+      } else {
+        throw new Error('GBT returned a block containing a transaction with unknown uid');
+      }
+    }));
+    const convertedRates: [string, number][] = [];
+    for (const [rateUid, rate] of rates) {
+      const rateTxid = this.uidMap.get(rateUid) as string;
+      convertedRates.push([rateTxid, rate]);
+    }
+    const convertedClusters: string[][] = [];
+    for (const cluster of clusters) {
+      convertedClusters.push(cluster.map(uid => this.uidMap.get(uid)) as string[]);
+    }
+    return { blocks: convertedBlocks, blockWeights, rates: convertedRates, clusters: convertedClusters };
+  }
 }

 export default new MempoolBlocks();
--- a/backend/src/api/mempool.ts
+++ b/backend/src/api/mempool.ts
@@ -1,5 +1,5 @@
 import config from '../config';
-import bitcoinApi from './bitcoin/bitcoin-api-factory';
+import bitcoinApi, { bitcoinCoreApi } from './bitcoin/bitcoin-api-factory';
 import { MempoolTransactionExtended, TransactionExtended, VbytesPerSecond } from '../mempool.interfaces';
 import logger from '../logger';
 import { Common } from './common';
@@ -9,6 +9,7 @@ import loadingIndicators from './loading-indicators';
 import bitcoinClient from './bitcoin/bitcoin-client';
 import bitcoinSecondClient from './bitcoin/bitcoin-second-client';
 import rbfCache from './rbf-cache';
+import redisCache from './redis-cache';

 class Mempool {
  private inSync: boolean = false;
@@ -19,7 +20,7 @@ class Mempool {
                                                    maxmempool: 300000000, mempoolminfee: 0.00001000, minrelaytxfee: 0.00001000 };
  private mempoolChangedCallback: ((newMempool: {[txId: string]: MempoolTransactionExtended; }, newTransactions: MempoolTransactionExtended[],
    deletedTransactions: MempoolTransactionExtended[]) => void) | undefined;
-  private $asyncMempoolChangedCallback: ((newMempool: {[txId: string]: MempoolTransactionExtended; }, newTransactions: MempoolTransactionExtended[],
+  private $asyncMempoolChangedCallback: ((newMempool: {[txId: string]: MempoolTransactionExtended; }, mempoolSize: number, newTransactions: MempoolTransactionExtended[],
    deletedTransactions: MempoolTransactionExtended[]) => Promise<void>) | undefined;

  private txPerSecondArray: number[] = [];
@@ -69,7 +70,7 @@ class Mempool {
    this.mempoolChangedCallback = fn;
  }

-  public setAsyncMempoolChangedCallback(fn: (newMempool: { [txId: string]: MempoolTransactionExtended; },
+  public setAsyncMempoolChangedCallback(fn: (newMempool: { [txId: string]: MempoolTransactionExtended; }, mempoolSize: number,
    newTransactions: MempoolTransactionExtended[], deletedTransactions: MempoolTransactionExtended[]) => Promise<void>): void {
    this.$asyncMempoolChangedCallback = fn;
  }
@@ -84,20 +85,74 @@ class Mempool {

  public async $setMempool(mempoolData: { [txId: string]: MempoolTransactionExtended }) {
    this.mempoolCache = mempoolData;
+    let count = 0;
+    const redisTimer = Date.now();
+    if (config.MEMPOOL.CACHE_ENABLED && config.REDIS.ENABLED) {
+      logger.debug(`Migrating ${Object.keys(this.mempoolCache).length} transactions from disk cache to Redis cache`);
+    }
    for (const txid of Object.keys(this.mempoolCache)) {
-      if (this.mempoolCache[txid].sigops == null || this.mempoolCache[txid].effectiveFeePerVsize == null) {
+      if (!this.mempoolCache[txid].sigops || this.mempoolCache[txid].effectiveFeePerVsize == null) {
        this.mempoolCache[txid] = transactionUtils.extendMempoolTransaction(this.mempoolCache[txid]);
      }
+      if (this.mempoolCache[txid].order == null) {
+        this.mempoolCache[txid].order = transactionUtils.txidToOrdering(txid);
+      }
+      count++;
+      if (config.MEMPOOL.CACHE_ENABLED && config.REDIS.ENABLED) {
+        await redisCache.$addTransaction(this.mempoolCache[txid]);
+      }
+    }
+    if (config.MEMPOOL.CACHE_ENABLED && config.REDIS.ENABLED) {
+      await redisCache.$flushTransactions();
+      logger.debug(`Finished migrating cache transactions in ${((Date.now() - redisTimer) / 1000).toFixed(2)} seconds`);
    }
    if (this.mempoolChangedCallback) {
      this.mempoolChangedCallback(this.mempoolCache, [], []);
    }
    if (this.$asyncMempoolChangedCallback) {
-      await this.$asyncMempoolChangedCallback(this.mempoolCache, [], []);
+      await this.$asyncMempoolChangedCallback(this.mempoolCache, count, [], []);
    }
    this.addToSpendMap(Object.values(this.mempoolCache));
  }

+  public async $reloadMempool(expectedCount: number): Promise<MempoolTransactionExtended[]> {
+    let count = 0;
+    let done = false;
+    let last_txid;
+    const newTransactions: MempoolTransactionExtended[] = [];
+    loadingIndicators.setProgress('mempool', count / expectedCount * 100);
+    while (!done) {
+      try {
+        const result = await bitcoinApi.$getMempoolTransactions(last_txid);
+        if (result) {
+          for (const tx of result) {
+            const extendedTransaction = transactionUtils.extendMempoolTransaction(tx);
+            if (!this.mempoolCache[extendedTransaction.txid]) {
+              newTransactions.push(extendedTransaction);
+              this.mempoolCache[extendedTransaction.txid] = extendedTransaction;
+            }
+            count++;
+          }
+          logger.info(`Fetched ${count} of ${expectedCount} mempool transactions from esplora`);
+          if (result.length > 0) {
+            last_txid = result[result.length - 1].txid;
+          } else {
+            done = true;
+          }
+          if (Math.floor((count / expectedCount) * 100) < 100) {
+            loadingIndicators.setProgress('mempool', count / expectedCount * 100);
+          }
+        } else {
+          done = true;
+        }
+      } catch(err) {
+        logger.err('failed to fetch bulk mempool transactions from esplora');
+      }
+    }
+    logger.info(`Done inserting loaded mempool transactions into local cache`);
+    return newTransactions;
+  }
+
  public async $updateMemPoolInfo() {
    this.mempoolInfo = await this.$getMempoolInfo();
  }
@@ -138,7 +193,7 @@ class Mempool {
    const currentMempoolSize = Object.keys(this.mempoolCache).length;
    this.updateTimerProgress(timer, 'got raw mempool');
    const diff = transactions.length - currentMempoolSize;
-    const newTransactions: MempoolTransactionExtended[] = [];
+    let newTransactions: MempoolTransactionExtended[] = [];

    this.mempoolCacheDelta = Math.abs(diff);

@@ -157,41 +212,66 @@ class Mempool {
    };

    let intervalTimer = Date.now();
-    for (const txid of transactions) {
-      if (!this.mempoolCache[txid]) {
-        try {
-          const transaction = await transactionUtils.$getMempoolTransactionExtended(txid, false, false, false);
-          this.updateTimerProgress(timer, 'fetched new transaction');
-          this.mempoolCache[txid] = transaction;
-          if (this.inSync) {
-            this.txPerSecondArray.push(new Date().getTime());
-            this.vBytesPerSecondArray.push({
-              unixTime: new Date().getTime(),
-              vSize: transaction.vsize,
-            });
-          }
-          hasChange = true;
-          newTransactions.push(transaction);
-        } catch (e: any) {
-          if (config.MEMPOOL.BACKEND === 'esplora' && e.response?.status === 404) {
-            this.missingTxCount++;
-          }
-          logger.debug(`Error finding transaction '${txid}' in the mempool: ` + (e instanceof Error ? e.message : e));
-        }
-      }

-      if (Date.now() - intervalTimer > 5_000) {
-        
-        if (this.inSync) {
-          // Break and restart mempool loop if we spend too much time processing
-          // new transactions that may lead to falling behind on block height
-          logger.debug('Breaking mempool loop because the 5s time limit exceeded.');
-          break;
-        } else {
-          const progress = (currentMempoolSize + newTransactions.length) / transactions.length * 100;
-          logger.debug(`Mempool is synchronizing. Processed ${newTransactions.length}/${diff} txs (${Math.round(progress)}%)`);
-          loadingIndicators.setProgress('mempool', progress);
-          intervalTimer = Date.now()
+    let loaded = false;
+    if (config.MEMPOOL.BACKEND === 'esplora' && currentMempoolSize < transactions.length * 0.5 && transactions.length > 20_000) {
+      this.inSync = false;
+      logger.info(`Missing ${transactions.length - currentMempoolSize} mempool transactions, attempting to reload in bulk from esplora`);
+      try {
+        newTransactions = await this.$reloadMempool(transactions.length);
+        if (config.REDIS.ENABLED) {
+          for (const tx of newTransactions) {
+            await redisCache.$addTransaction(tx);
+          }
+        }
+        loaded = true;
+      } catch (e) {
+        logger.err('failed to load mempool in bulk from esplora, falling back to fetching individual transactions');
+      }
+    }
+
+    if (!loaded) {
+      for (const txid of transactions) {
+        if (!this.mempoolCache[txid]) {
+          try {
+            const transaction = await transactionUtils.$getMempoolTransactionExtended(txid, false, false, false);
+            this.updateTimerProgress(timer, 'fetched new transaction');
+            this.mempoolCache[txid] = transaction;
+            if (this.inSync) {
+              this.txPerSecondArray.push(new Date().getTime());
+              this.vBytesPerSecondArray.push({
+                unixTime: new Date().getTime(),
+                vSize: transaction.vsize,
+              });
+            }
+            hasChange = true;
+            newTransactions.push(transaction);
+
+            if (config.REDIS.ENABLED) {
+              await redisCache.$addTransaction(transaction);
+            }
+          } catch (e: any) {
+            if (config.MEMPOOL.BACKEND === 'esplora' && e.response?.status === 404) {
+              this.missingTxCount++;
+            }
+            logger.debug(`Error finding transaction '${txid}' in the mempool: ` + (e instanceof Error ? e.message : e));
+          }
+        }
+
+        if (Date.now() - intervalTimer > 5_000) {
+          if (this.inSync) {
+            // Break and restart mempool loop if we spend too much time processing
+            // new transactions that may lead to falling behind on block height
+            logger.debug('Breaking mempool loop because the 5s time limit exceeded.');
+            break;
+          } else {
+            const progress = (currentMempoolSize + newTransactions.length) / transactions.length * 100;
+            logger.debug(`Mempool is synchronizing. Processed ${newTransactions.length}/${diff} txs (${Math.round(progress)}%)`);
+            if (Math.floor(progress) < 100) {
+              loadingIndicators.setProgress('mempool', progress);
+            }
+            intervalTimer = Date.now()
+          }
        }
      }
    }
@@ -237,26 +317,34 @@ class Mempool {
      }
    }

+    const newMempoolSize = currentMempoolSize + newTransactions.length - deletedTransactions.length;
    const newTransactionsStripped = newTransactions.map((tx) => Common.stripTransaction(tx));
    this.latestTransactions = newTransactionsStripped.concat(this.latestTransactions).slice(0, 6);

-    if (!this.inSync && transactions.length === Object.keys(this.mempoolCache).length) {
-      this.inSync = true;
-      logger.notice('The mempool is now in sync!');
-      loadingIndicators.setProgress('mempool', 100);
-    }
-
-    this.mempoolCacheDelta = Math.abs(transactions.length - Object.keys(this.mempoolCache).length);
+    this.mempoolCacheDelta = Math.abs(transactions.length - newMempoolSize);

    if (this.mempoolChangedCallback && (hasChange || deletedTransactions.length)) {
      this.mempoolChangedCallback(this.mempoolCache, newTransactions, deletedTransactions);
    }
    if (this.$asyncMempoolChangedCallback && (hasChange || deletedTransactions.length)) {
      this.updateTimerProgress(timer, 'running async mempool callback');
-      await this.$asyncMempoolChangedCallback(this.mempoolCache, newTransactions, deletedTransactions);
+      await this.$asyncMempoolChangedCallback(this.mempoolCache, newMempoolSize, newTransactions, deletedTransactions);
      this.updateTimerProgress(timer, 'completed async mempool callback');
    }

+    if (!this.inSync && transactions.length === newMempoolSize) {
+      this.inSync = true;
+      logger.notice('The mempool is now in sync!');
+      loadingIndicators.setProgress('mempool', 100);
+    }
+
+    // Update Redis cache
+    if (config.REDIS.ENABLED) {
+      await redisCache.$flushTransactions();
+      await redisCache.$removeTransactions(deletedTransactions.map(tx => tx.txid));
+      await rbfCache.updateCache();
+    }
+
    const end = new Date().getTime();
    const time = end - start;
    logger.debug(`Mempool updated in ${time / 1000} seconds. New size: ${Object.keys(this.mempoolCache).length} (${diff > 0 ? '+' + diff : diff})`);
--- a/backend/src/api/rbf-cache.ts
+++ b/backend/src/api/rbf-cache.ts
@@ -1,14 +1,17 @@
+import config from "../config";
 import logger from "../logger";
 import { MempoolTransactionExtended, TransactionStripped } from "../mempool.interfaces";
 import bitcoinApi from './bitcoin/bitcoin-api-factory';
 import { Common } from "./common";
+import redisCache from "./redis-cache";

-interface RbfTransaction extends TransactionStripped {
+export interface RbfTransaction extends TransactionStripped {
  rbf?: boolean;
  mined?: boolean;
+  fullRbf?: boolean;
 }

-interface RbfTree {
+export interface RbfTree {
  tx: RbfTransaction;
  time: number;
  interval?: number;
@@ -17,6 +20,29 @@ interface RbfTree {
  replaces: RbfTree[];
 }

+export interface ReplacementInfo {
+  mined: boolean;
+  fullRbf: boolean;
+  txid: string;
+  oldFee: number;
+  oldVsize: number;
+  newFee: number;
+  newVsize: number;
+}
+
+enum CacheOp {
+  Remove = 0,
+  Add = 1,
+  Change = 2,
+}
+
+interface CacheEvent {
+  op: CacheOp;
+  type: 'tx' | 'tree' | 'exp';
+  txid: string,
+  value?: any,
+}
+
 class RbfCache {
  private replacedBy: Map<string, string> = new Map();
  private replaces: Map<string, string[]> = new Map();
@@ -25,11 +51,43 @@ class RbfCache {
  private treeMap: Map<string, string> = new Map(); // map of txids to sequence ids
  private txs: Map<string, MempoolTransactionExtended> = new Map();
  private expiring: Map<string, number> = new Map();
+  private cacheQueue: CacheEvent[] = [];

  constructor() {
    setInterval(this.cleanup.bind(this), 1000 * 60 * 10);
  }

+  private addTx(txid: string, tx: MempoolTransactionExtended): void {
+    this.txs.set(txid, tx);
+    this.cacheQueue.push({ op: CacheOp.Add, type: 'tx', txid });
+  }
+
+  private addTree(txid: string, tree: RbfTree): void {
+    this.rbfTrees.set(txid, tree);
+    this.dirtyTrees.add(txid);
+    this.cacheQueue.push({ op: CacheOp.Add, type: 'tree', txid });
+  }
+
+  private addExpiration(txid: string, expiry: number): void {
+    this.expiring.set(txid, expiry);
+    this.cacheQueue.push({ op: CacheOp.Add, type: 'exp', txid, value: expiry });
+  }
+
+  private removeTx(txid: string): void {
+    this.txs.delete(txid);
+    this.cacheQueue.push({ op: CacheOp.Remove, type: 'tx', txid });
+  }
+
+  private removeTree(txid: string): void {
+    this.rbfTrees.delete(txid);
+    this.cacheQueue.push({ op: CacheOp.Remove, type: 'tree', txid });
+  }
+
+  private removeExpiration(txid: string): void {
+    this.expiring.delete(txid);
+    this.cacheQueue.push({ op: CacheOp.Remove, type: 'exp', txid });
+  }
+
  public add(replaced: MempoolTransactionExtended[], newTxExtended: MempoolTransactionExtended): void {
    if (!newTxExtended || !replaced?.length || this.txs.has(newTxExtended.txid)) {
      return;
@@ -38,24 +96,28 @@ class RbfCache {
    const newTx = Common.stripTransaction(newTxExtended) as RbfTransaction;
    const newTime = newTxExtended.firstSeen || (Date.now() / 1000);
    newTx.rbf = newTxExtended.vin.some((v) => v.sequence < 0xfffffffe);
-    this.txs.set(newTx.txid, newTxExtended);
+    this.addTx(newTx.txid, newTxExtended);

    // maintain rbf trees
-    let fullRbf = false;
+    let txFullRbf = false;
+    let treeFullRbf = false;
    const replacedTrees: RbfTree[] = [];
    for (const replacedTxExtended of replaced) {
      const replacedTx = Common.stripTransaction(replacedTxExtended) as RbfTransaction;
      replacedTx.rbf = replacedTxExtended.vin.some((v) => v.sequence < 0xfffffffe);
+      if (!replacedTx.rbf) {
+        txFullRbf = true;
+      }
      this.replacedBy.set(replacedTx.txid, newTx.txid);
      if (this.treeMap.has(replacedTx.txid)) {
        const treeId = this.treeMap.get(replacedTx.txid);
        if (treeId) {
          const tree = this.rbfTrees.get(treeId);
-          this.rbfTrees.delete(treeId);
+          this.removeTree(treeId);
          if (tree) {
            tree.interval = newTime - tree?.time;
            replacedTrees.push(tree);
-            fullRbf = fullRbf || tree.fullRbf;
+            treeFullRbf = treeFullRbf || tree.fullRbf || !tree.tx.rbf;
          }
        }
      } else {
@@ -67,21 +129,21 @@ class RbfCache {
          fullRbf: !replacedTx.rbf,
          replaces: [],
        });
-        fullRbf = fullRbf || !replacedTx.rbf;
-        this.txs.set(replacedTx.txid, replacedTxExtended);
+        treeFullRbf = treeFullRbf || !replacedTx.rbf;
+        this.addTx(replacedTx.txid, replacedTxExtended);
      }
    }
+    newTx.fullRbf = txFullRbf;
    const treeId = replacedTrees[0].tx.txid;
    const newTree = {
      tx: newTx,
      time: newTime,
-      fullRbf,
+      fullRbf: treeFullRbf,
      replaces: replacedTrees
    };
-    this.rbfTrees.set(treeId, newTree);
+    this.addTree(treeId, newTree);
    this.updateTreeMap(treeId, newTree);
    this.replaces.set(newTx.txid, replacedTrees.map(tree => tree.tx.txid));
-    this.dirtyTrees.add(treeId);
  }

  public getReplacedBy(txId: string): string | undefined {
@@ -157,6 +219,7 @@ class RbfCache {
        this.setTreeMined(tree, txid);
        tree.mined = true;
        this.dirtyTrees.add(treeId);
+        this.cacheQueue.push({ op: CacheOp.Change, type: 'tree', txid: treeId });
      }
    }
    this.evict(txid);
@@ -165,19 +228,33 @@ class RbfCache {
  // flag a transaction as removed from the mempool
  public evict(txid: string, fast: boolean = false): void {
    if (this.txs.has(txid) && (fast || !this.expiring.has(txid))) {
-      this.expiring.set(txid, fast ? Date.now() + (1000 * 60 * 10) : Date.now() + (1000 * 86400)); // 24 hours
+      const expiryTime = fast ? Date.now() + (1000 * 60 * 10) : Date.now() + (1000 * 86400); // 24 hours
+      this.addExpiration(txid, expiryTime);
    }
  }

+  // is the transaction involved in a full rbf replacement?
+  public isFullRbf(txid: string): boolean {
+    const treeId = this.treeMap.get(txid);
+    if (!treeId) {
+      return false;
+    }
+    const tree = this.rbfTrees.get(treeId);
+    if (!tree) {
+      return false;
+    }
+    return tree?.fullRbf;
+  }
+
  private cleanup(): void {
    const now = Date.now();
    for (const txid of this.expiring.keys()) {
      if ((this.expiring.get(txid) || 0) < now) {
-        this.expiring.delete(txid);
+        this.removeExpiration(txid);
        this.remove(txid);
      }
    }
-    logger.debug(`rbf cache contains ${this.txs.size} txs, ${this.expiring.size} due to expire`);
+    logger.debug(`rbf cache contains ${this.txs.size} txs, ${this.rbfTrees.size} trees, ${this.expiring.size} due to expire`);
  }

  // remove a transaction & all previous versions from the cache
@@ -187,14 +264,14 @@ class RbfCache {
      const replaces = this.replaces.get(txid);
      this.replaces.delete(txid);
      this.treeMap.delete(txid);
-      this.txs.delete(txid);
-      this.expiring.delete(txid);
+      this.removeTx(txid);
+      this.removeExpiration(txid);
      for (const tx of (replaces || [])) {
        // recursively remove prior versions from the cache
        this.replacedBy.delete(tx);
        // if this is the id of a tree, remove that too
        if (this.treeMap.get(tx) === tx) {
-          this.rbfTrees.delete(tx);
+          this.removeTree(tx);
        }
        this.remove(tx);
      }
@@ -226,6 +303,33 @@ class RbfCache {
    }
  }

+  public async updateCache(): Promise<void> {
+    if (!config.REDIS.ENABLED) {
+      return;
+    }
+    // Update the Redis cache by replaying queued events
+    for (const e of this.cacheQueue) {
+      if (e.op === CacheOp.Add || e.op === CacheOp.Change) {
+        let value = e.value;
+          switch(e.type) {
+            case 'tx': {
+              value = this.txs.get(e.txid);
+            } break;
+            case 'tree': {
+              const tree = this.rbfTrees.get(e.txid);
+              value = tree ? this.exportTree(tree) : null;
+            } break;
+          }
+          if (value != null) {
+            await redisCache.$setRbfEntry(e.type, e.txid, value);
+          }
+      } else if (e.op === CacheOp.Remove) {
+        await redisCache.$removeRbfEntry(e.type, e.txid);
+      }
+    }
+    this.cacheQueue = [];
+  }
+
  public dump(): any {
    const trees = Array.from(this.rbfTrees.values()).map((tree: RbfTree) => { return this.exportTree(tree); });

@@ -331,11 +435,31 @@ class RbfCache {
    };
    this.treeMap.set(txid, root);
    if (root === txid) {
-      this.rbfTrees.set(root, tree);
-      this.dirtyTrees.add(root);
+      this.addTree(root, tree);
    }
    return tree;
  }
+
+  public getLatestRbfSummary(): ReplacementInfo[] {
+    const rbfList = this.getRbfTrees(false);
+    return rbfList.slice(0, 6).map(rbfTree => {
+      let oldFee = 0;
+      let oldVsize = 0;
+      for (const replaced of rbfTree.replaces) {
+        oldFee += replaced.tx.fee;
+        oldVsize += replaced.tx.vsize;
+      }
+      return {
+        txid: rbfTree.tx.txid,
+        mined: !!rbfTree.tx.mined,
+        fullRbf: !!rbfTree.tx.fullRbf,
+        oldFee,
+        oldVsize,
+        newFee: rbfTree.tx.fee,
+        newVsize: rbfTree.tx.vsize,
+      };
+    });
+  }
 }

 export default new RbfCache();
--- a/backend/src/api/redis-cache.ts
+++ b/backend/src/api/redis-cache.ts
@@ -0,0 +1,253 @@
+import { createClient } from 'redis';
+import memPool from './mempool';
+import blocks from './blocks';
+import logger from '../logger';
+import config from '../config';
+import { BlockExtended, BlockSummary, MempoolTransactionExtended } from '../mempool.interfaces';
+import rbfCache from './rbf-cache';
+import transactionUtils from './transaction-utils';
+
+enum NetworkDB {
+  mainnet = 0,
+  testnet,
+  signet,
+  liquid,
+  liquidtestnet,
+}
+
+class RedisCache {
+  private client;
+  private connected = false;
+  private schemaVersion = 1;
+
+  private cacheQueue: MempoolTransactionExtended[] = [];
+  private txFlushLimit: number = 10000;
+
+  constructor() {
+    if (config.REDIS.ENABLED) {
+      const redisConfig = {
+        socket: {
+          path: config.REDIS.UNIX_SOCKET_PATH
+        },
+        database: NetworkDB[config.MEMPOOL.NETWORK],
+      };
+      this.client = createClient(redisConfig);
+      this.client.on('error', (e) => {
+        logger.err(`Error in Redis client: ${e instanceof Error ? e.message : e}`);
+      });
+      this.$ensureConnected();
+      this.client.exists('mempool:0').then((mempoolExists) => {
+        if (!mempoolExists) {
+          for (let i = 0; i < 16; i++) {
+            this.client.json.set(`mempool:${i.toString(16)}`, '$', {});
+          }
+        }
+      });
+    }
+  }
+
+  private async $ensureConnected(): Promise<void> {
+    if (!this.connected && config.REDIS.ENABLED) {
+      return this.client.connect().then(async () => {
+        this.connected = true;
+        logger.info(`Redis client connected`);
+        const version = await this.client.get('schema_version');
+        if (version !== this.schemaVersion) {
+          // schema changed
+          // perform migrations or flush DB if necessary
+          logger.info(`Redis schema version changed from ${version} to ${this.schemaVersion}`);
+          await this.client.set('schema_version', this.schemaVersion);
+        }
+      });
+    }
+  }
+
+  async $updateBlocks(blocks: BlockExtended[]) {
+    try {
+      await this.$ensureConnected();
+      await this.client.json.set('blocks', '$', blocks);
+    } catch (e) {
+      logger.warn(`Failed to update blocks in Redis cache: ${e instanceof Error ? e.message : e}`);
+    }
+  }
+
+  async $updateBlockSummaries(summaries: BlockSummary[]) {
+    try {
+      await this.$ensureConnected();
+      await this.client.json.set('block-summaries', '$', summaries);
+    } catch (e) {
+      logger.warn(`Failed to update blocks in Redis cache: ${e instanceof Error ? e.message : e}`);
+    }
+  }
+
+  async $addTransaction(tx: MempoolTransactionExtended) {
+    this.cacheQueue.push(tx);
+    if (this.cacheQueue.length >= this.txFlushLimit) {
+      await this.$flushTransactions();
+    }
+  }
+
+  async $flushTransactions() {
+    const success = await this.$addTransactions(this.cacheQueue);
+    if (success) {
+      logger.info(`Flushed ${this.cacheQueue.length} transactions to Redis cache`);
+      this.cacheQueue = [];
+    } else {
+      logger.err(`Failed to flush ${this.cacheQueue.length} transactions to Redis cache`);
+    }
+  }
+
+  private async $addTransactions(newTransactions: MempoolTransactionExtended[]): Promise<boolean> {
+    try {
+      await this.$ensureConnected();
+      await Promise.all(newTransactions.map(tx => {
+        const minified: any = { ...tx };
+        delete minified.hex;
+        for (const vin of minified.vin) {
+          delete vin.inner_redeemscript_asm;
+          delete vin.inner_witnessscript_asm;
+          delete vin.scriptsig_asm;
+        }
+        for (const vout of minified.vout) {
+          delete vout.scriptpubkey_asm;
+        }
+        return this.client.json.set(`mempool:${tx.txid.slice(0,1)}`, tx.txid, minified);
+      }));
+      return true;
+    } catch (e) {
+      logger.warn(`Failed to add ${newTransactions.length} transactions to Redis cache: ${e instanceof Error ? e.message : e}`);
+      return false;
+    }
+  }
+
+  async $removeTransactions(transactions: string[]) {
+    try {
+      await this.$ensureConnected();
+      await Promise.all(transactions.map(txid => {
+        return this.client.json.del(`mempool:${txid.slice(0,1)}`, txid);
+      }));
+    } catch (e) {
+      logger.warn(`Failed to remove ${transactions.length} transactions from Redis cache: ${e instanceof Error ? e.message : e}`);
+    }
+  }
+
+  async $setRbfEntry(type: string, txid: string, value: any): Promise<void> {
+    try {
+      await this.$ensureConnected();
+      await this.client.json.set(`rbf:${type}:${txid}`, '$', value);
+    } catch (e) {
+      logger.warn(`Failed to set RBF ${type} in Redis cache: ${e instanceof Error ? e.message : e}`);
+    }
+  }
+
+  async $removeRbfEntry(type: string, txid: string): Promise<void> {
+    try {
+      await this.$ensureConnected();
+      await this.client.del(`rbf:${type}:${txid}`);
+    } catch (e) {
+      logger.warn(`Failed to remove RBF ${type} from Redis cache: ${e instanceof Error ? e.message : e}`);
+    }
+  }
+
+  async $getBlocks(): Promise<BlockExtended[]> {
+    try {
+      await this.$ensureConnected();
+      return this.client.json.get('blocks');
+    } catch (e) {
+      logger.warn(`Failed to retrieve blocks from Redis cache: ${e instanceof Error ? e.message : e}`);
+      return [];
+    }
+  }
+
+  async $getBlockSummaries(): Promise<BlockSummary[]> {
+    try {
+      await this.$ensureConnected();
+      return this.client.json.get('block-summaries');
+    } catch (e) {
+      logger.warn(`Failed to retrieve blocks from Redis cache: ${e instanceof Error ? e.message : e}`);
+      return [];
+    }
+  }
+
+  async $getMempool(): Promise<{ [txid: string]: MempoolTransactionExtended }> {
+    const start = Date.now();
+    let mempool = {};
+    try {
+      await this.$ensureConnected();
+      for (let i = 0; i < 16; i++) {
+        const shard = await this.client.json.get(`mempool:${i.toString(16)}`);
+        logger.info(`Loaded ${Object.keys(shard).length} transactions from redis cache ${i.toString(16)}`);
+        mempool = Object.assign(mempool, shard);
+      }
+      logger.info(`Total ${Object.keys(mempool).length} transactions loaded from redis cache `);
+      logger.info(`Loaded redis cache in ${Date.now() - start} ms`);
+      return mempool || {};
+    } catch (e) {
+      logger.warn(`Failed to retrieve mempool from Redis cache: ${e instanceof Error ? e.message : e}`);
+    }
+    return {};
+  }
+
+  async $getRbfEntries(type: string): Promise<any[]> {
+    try {
+      await this.$ensureConnected();
+      const keys = await this.client.keys(`rbf:${type}:*`);
+      const promises: Promise<MempoolTransactionExtended[]>[] = [];
+      for (let i = 0; i < keys.length; i += 10000) {
+        const keySlice = keys.slice(i, i + 10000);
+        if (!keySlice.length) {
+          continue;
+        }
+        promises.push(this.client.json.mGet(keySlice, '$').then(chunk => chunk?.length ? chunk.flat().map((v, i) => [keySlice[i].slice(`rbf:${type}:`.length), v]) : [] ));
+      }
+      const entries = await Promise.all(promises);
+      return entries.flat();
+    } catch (e) {
+      logger.warn(`Failed to retrieve Rbf ${type}s from Redis cache: ${e instanceof Error ? e.message : e}`);
+      return [];
+    }
+  }
+
+  async $loadCache() {
+    logger.info('Restoring mempool and blocks data from Redis cache');
+    // Load block data
+    const loadedBlocks = await this.$getBlocks();
+    const loadedBlockSummaries = await this.$getBlockSummaries();
+    // Load mempool
+    const loadedMempool = await this.$getMempool();
+    this.inflateLoadedTxs(loadedMempool);
+    // Load rbf data
+    const rbfTxs = await this.$getRbfEntries('tx');
+    const rbfTrees = await this.$getRbfEntries('tree');
+    const rbfExpirations = await this.$getRbfEntries('exp');
+
+    // Set loaded data
+    blocks.setBlocks(loadedBlocks || []);
+    blocks.setBlockSummaries(loadedBlockSummaries || []);
+    await memPool.$setMempool(loadedMempool);
+    await rbfCache.load({
+      txs: rbfTxs,
+      trees: rbfTrees.map(loadedTree => loadedTree[1]),
+      expiring: rbfExpirations,
+    });
+  }
+
+  private inflateLoadedTxs(mempool: { [txid: string]: MempoolTransactionExtended }) {
+    for (const tx of Object.values(mempool)) {
+      for (const vin of tx.vin) {
+        if (vin.scriptsig) {
+          vin.scriptsig_asm = transactionUtils.convertScriptSigAsm(vin.scriptsig);
+          transactionUtils.addInnerScriptsToVin(vin);
+        }
+      }
+      for (const vout of tx.vout) {
+        if (vout.scriptpubkey) {
+          vout.scriptpubkey_asm = transactionUtils.convertScriptSigAsm(vout.scriptpubkey);
+        }
+      }
+    }
+  }
+
+}
+
+export default new RedisCache();
--- a/backend/src/api/transaction-utils.ts
+++ b/backend/src/api/transaction-utils.ts
@@ -35,6 +35,13 @@ class TransactionUtils {
    } else {
      transaction  = await bitcoinApi.$getRawTransaction(txId, false, addPrevouts, lazyPrevouts);
    }
+
+    if (Common.isLiquid()) {
+      if (!isFinite(Number(transaction.fee))) {
+        transaction.fee = Object.values(transaction.fee || {}).reduce((total, output) => total + output, 0);
+      }
+    }
+
    if (addMempoolData || !transaction?.status?.confirmed) {
      return this.extendMempoolTransaction(transaction);
    } else {
@@ -46,14 +53,13 @@ class TransactionUtils {
    return (await this.$getTransactionExtended(txId, addPrevouts, lazyPrevouts, forceCore, true)) as MempoolTransactionExtended;
  }

-  private extendTransaction(transaction: IEsploraApi.Transaction): TransactionExtended {
+  public extendTransaction(transaction: IEsploraApi.Transaction): TransactionExtended {
    // @ts-ignore
    if (transaction.vsize) {
      // @ts-ignore
      return transaction;
    }
-    const feePerVbytes = Math.max(Common.isLiquid() ? 0.1 : 1,
-      (transaction.fee || 0) / (transaction.weight / 4));
+    const feePerVbytes = (transaction.fee || 0) / (transaction.weight / 4);
    const transactionExtended: TransactionExtended = Object.assign({
      vsize: Math.round(transaction.weight / 4),
      feePerVsize: feePerVbytes,
@@ -68,14 +74,13 @@ class TransactionUtils {
  public extendMempoolTransaction(transaction: IEsploraApi.Transaction): MempoolTransactionExtended {
    const vsize = Math.ceil(transaction.weight / 4);
    const fractionalVsize = (transaction.weight / 4);
-    const sigops = this.countSigops(transaction);
+    const sigops = !Common.isLiquid() ? this.countSigops(transaction) : 0;
    // https://github.com/bitcoin/bitcoin/blob/e9262ea32a6e1d364fb7974844fadc36f931f8c6/src/policy/policy.cpp#L295-L298
    const adjustedVsize = Math.max(fractionalVsize, sigops *  5); // adjusted vsize = Max(weight, sigops * bytes_per_sigop) / witness_scale_factor
-    const feePerVbytes = Math.max(Common.isLiquid() ? 0.1 : 1,
-      (transaction.fee || 0) / fractionalVsize);
-    const adjustedFeePerVsize = Math.max(Common.isLiquid() ? 0.1 : 1,
-      (transaction.fee || 0) / adjustedVsize);
+    const feePerVbytes = (transaction.fee || 0) / fractionalVsize;
+    const adjustedFeePerVsize = (transaction.fee || 0) / adjustedVsize;
    const transactionExtended: MempoolTransactionExtended = Object.assign(transaction, {
+      order: this.txidToOrdering(transaction.txid),
      vsize: Math.round(transaction.weight / 4),
      adjustedVsize,
      sigops,
@@ -154,6 +159,133 @@ class TransactionUtils {

    return sigops;
  }
+
+  // returns the most significant 4 bytes of the txid as an integer
+  public txidToOrdering(txid: string): number {
+    return parseInt(
+      txid.substr(62, 2) +
+        txid.substr(60, 2) +
+        txid.substr(58, 2) +
+        txid.substr(56, 2),
+      16
+    );
+  }
+
+  public addInnerScriptsToVin(vin: IEsploraApi.Vin): void {
+    if (!vin.prevout) {
+      return;
+    }
+
+    if (vin.prevout.scriptpubkey_type === 'p2sh') {
+      const redeemScript = vin.scriptsig_asm.split(' ').reverse()[0];
+      vin.inner_redeemscript_asm = this.convertScriptSigAsm(redeemScript);
+      if (vin.witness && vin.witness.length > 2) {
+        const witnessScript = vin.witness[vin.witness.length - 1];
+        vin.inner_witnessscript_asm = this.convertScriptSigAsm(witnessScript);
+      }
+    }
+
+    if (vin.prevout.scriptpubkey_type === 'v0_p2wsh' && vin.witness) {
+      const witnessScript = vin.witness[vin.witness.length - 1];
+      vin.inner_witnessscript_asm = this.convertScriptSigAsm(witnessScript);
+    }
+
+    if (vin.prevout.scriptpubkey_type === 'v1_p2tr' && vin.witness) {
+      const witnessScript = this.witnessToP2TRScript(vin.witness);
+      if (witnessScript !== null) {
+        vin.inner_witnessscript_asm = this.convertScriptSigAsm(witnessScript);
+      }
+    }
+  }
+
+  public convertScriptSigAsm(hex: string): string {
+    const buf = Buffer.from(hex, 'hex');
+
+    const b: string[] = [];
+
+    let i = 0;
+    while (i < buf.length) {
+      const op = buf[i];
+      if (op >= 0x01 && op <= 0x4e) {
+        i++;
+        let push: number;
+        if (op === 0x4c) {
+          push = buf.readUInt8(i);
+          b.push('OP_PUSHDATA1');
+          i += 1;
+        } else if (op === 0x4d) {
+          push = buf.readUInt16LE(i);
+          b.push('OP_PUSHDATA2');
+          i += 2;
+        } else if (op === 0x4e) {
+          push = buf.readUInt32LE(i);
+          b.push('OP_PUSHDATA4');
+          i += 4;
+        } else {
+          push = op;
+          b.push('OP_PUSHBYTES_' + push);
+        }
+
+        const data = buf.slice(i, i + push);
+        if (data.length !== push) {
+          break;
+        }
+
+        b.push(data.toString('hex'));
+        i += data.length;
+      } else {
+        if (op === 0x00) {
+          b.push('OP_0');
+        } else if (op === 0x4f) {
+          b.push('OP_PUSHNUM_NEG1');
+        } else if (op === 0xb1) {
+          b.push('OP_CLTV');
+        } else if (op === 0xb2) {
+          b.push('OP_CSV');
+        } else if (op === 0xba) {
+          b.push('OP_CHECKSIGADD');
+        } else {
+          const opcode = bitcoinjs.script.toASM([ op ]);
+          if (opcode && op < 0xfd) {
+            if (/^OP_(\d+)$/.test(opcode)) {
+              b.push(opcode.replace(/^OP_(\d+)$/, 'OP_PUSHNUM_$1'));
+            } else {
+              b.push(opcode);
+            }
+          } else {
+            b.push('OP_RETURN_' + op);
+          }
+        }
+        i += 1;
+      }
+    }
+
+    return b.join(' ');
+  }
+
+  /**
+   * This function must only be called when we know the witness we are parsing
+   * is a taproot witness.
+   * @param witness An array of hex strings that represents the witness stack of
+   *                the input.
+   * @returns null if the witness is not a script spend, and the hex string of
+   *          the script item if it is a script spend.
+   */
+  public witnessToP2TRScript(witness: string[]): string | null {
+    if (witness.length < 2) return null;
+    // Note: see BIP341 for parsing details of witness stack
+
+    // If there are at least two witness elements, and the first byte of the
+    // last element is 0x50, this last element is called annex a and
+    // is removed from the witness stack.
+    const hasAnnex = witness[witness.length - 1].substring(0, 2) === '50';
+    // If there are at least two witness elements left, script path spending is used.
+    // Call the second-to-last stack element s, the script.
+    // (Note: this phrasing from BIP341 assumes we've *removed* the annex from the stack)
+    if (hasAnnex && witness.length < 3) return null;
+    const positionOfScript = hasAnnex ? witness.length - 3 : witness.length - 2;
+    return witness[positionOfScript];
+  }
 }

 export default new TransactionUtils();
--- a/backend/src/api/websocket-handler.ts
+++ b/backend/src/api/websocket-handler.ts
@@ -12,7 +12,7 @@ import { Common } from './common';
 import loadingIndicators from './loading-indicators';
 import config from '../config';
 import transactionUtils from './transaction-utils';
-import rbfCache from './rbf-cache';
+import rbfCache, { ReplacementInfo } from './rbf-cache';
 import difficultyAdjustment from './difficulty-adjustment';
 import feeApi from './fee-api';
 import BlocksAuditsRepository from '../repositories/BlocksAuditsRepository';
@@ -40,6 +40,7 @@ class WebsocketHandler {

  private socketData: { [key: string]: string } = {};
  private serializedInitData: string = '{}';
+  private lastRbfSummary: ReplacementInfo | null = null;

  constructor() { }

@@ -225,8 +226,19 @@ class WebsocketHandler {
            }
          }

+          if (parsedMessage && parsedMessage['track-rbf-summary'] != null) {
+            if (parsedMessage['track-rbf-summary']) {
+              client['track-rbf-summary'] = true;
+              if (this.socketData['rbfSummary'] != null) {
+                response['rbfLatestSummary'] = this.socketData['rbfSummary'];
+              }
+            } else {
+              client['track-rbf-summary'] = false;
+            }
+          }
+
          if (parsedMessage.action === 'init') {
-            if (!this.socketData['blocks']?.length || !this.socketData['da']) {
+            if (!this.socketData['blocks']?.length || !this.socketData['da'] || !this.socketData['backendInfo'] || !this.socketData['conversions']) {
              this.updateSocketData();
            }
            if (!this.socketData['blocks']?.length) {
@@ -333,7 +345,41 @@ class WebsocketHandler {
    });
  }

-  async $handleMempoolChange(newMempool: { [txid: string]: MempoolTransactionExtended },
+  handleReorg(): void {
+    if (!this.wss) {
+      throw new Error('WebSocket.Server is not set');
+    }
+
+    const da = difficultyAdjustment.getDifficultyAdjustment();
+
+    // update init data
+    this.updateSocketDataFields({
+      'blocks': blocks.getBlocks(),
+      'da': da?.previousTime ? da : undefined,
+    });
+
+    this.wss.clients.forEach((client) => {
+      if (client.readyState !== WebSocket.OPEN) {
+        return;
+      }
+
+      const response = {};
+
+      if (client['want-blocks']) {
+        response['blocks'] = this.socketData['blocks'];
+      }
+      if (client['want-stats']) {
+        response['da'] = this.socketData['da'];
+      }
+
+      if (Object.keys(response).length) {
+        const serializedResponse = this.serializeResponse(response);
+        client.send(serializedResponse);
+      }
+    });
+  }
+
+  async $handleMempoolChange(newMempool: { [txid: string]: MempoolTransactionExtended }, mempoolSize: number,
    newTransactions: MempoolTransactionExtended[], deletedTransactions: MempoolTransactionExtended[]): Promise<void> {
    if (!this.wss) {
      throw new Error('WebSocket.Server is not set');
@@ -342,7 +388,11 @@ class WebsocketHandler {
    this.printLogs();

    if (config.MEMPOOL.ADVANCED_GBT_MEMPOOL) {
-      await mempoolBlocks.$updateBlockTemplates(newMempool, newTransactions, deletedTransactions, true);
+      if (config.MEMPOOL.RUST_GBT) {
+        await mempoolBlocks.$rustUpdateBlockTemplates(newMempool, mempoolSize, newTransactions, deletedTransactions);
+      } else {
+        await mempoolBlocks.$updateBlockTemplates(newMempool, newTransactions, deletedTransactions, true);
+      }
    } else {
      mempoolBlocks.updateMempoolBlocks(newMempool, true);
    }
@@ -357,10 +407,13 @@ class WebsocketHandler {
    const rbfChanges = rbfCache.getRbfChanges();
    let rbfReplacements;
    let fullRbfReplacements;
+    let rbfSummary;
    if (Object.keys(rbfChanges.trees).length) {
      rbfReplacements = rbfCache.getRbfTrees(false);
      fullRbfReplacements = rbfCache.getRbfTrees(true);
+      rbfSummary = rbfCache.getLatestRbfSummary();
    }
+
    for (const deletedTx of deletedTransactions) {
      rbfCache.evict(deletedTx.txid);
    }
@@ -368,10 +421,10 @@ class WebsocketHandler {
    memPool.addToSpendMap(newTransactions);
    const recommendedFees = feeApi.getRecommendedFee();

-    const latestTransactions = newTransactions.slice(0, 6).map((tx) => Common.stripTransaction(tx));
+    const latestTransactions = memPool.getLatestTransactions();

    // update init data
-    this.updateSocketDataFields({
+    const socketDataFields = {
      'mempoolInfo': mempoolInfo,
      'vBytesPerSecond': vBytesPerSecond,
      'mempool-blocks': mBlocks,
@@ -379,7 +432,11 @@ class WebsocketHandler {
      'loadingIndicators': loadingIndicators.getLoadingIndicators(),
      'da': da?.previousTime ? da : undefined,
      'fees': recommendedFees,
-    });
+    };
+    if (rbfSummary) {
+      socketDataFields['rbfSummary'] = rbfSummary;
+    }
+    this.updateSocketDataFields(socketDataFields);

    // cache serialized objects to avoid stringify-ing the same thing for every client
    const responseCache = { ...this.socketData };
@@ -547,7 +604,7 @@ class WebsocketHandler {
        }
      }

-      if (client['track-mempool-block'] >= 0) {
+      if (client['track-mempool-block'] >= 0 && memPool.isInSync()) {
        const index = client['track-mempool-block'];
        if (mBlockDeltas[index]) {
          response['projected-block-transactions'] = getCachedResponse(`projected-block-transactions-${index}`, {
@@ -563,6 +620,10 @@ class WebsocketHandler {
        response['rbfLatest'] = getCachedResponse('fullrbfLatest', fullRbfReplacements);
      }

+      if (client['track-rbf-summary'] && rbfSummary) {
+        response['rbfLatestSummary'] = getCachedResponse('rbfLatestSummary', rbfSummary);
+      }
+
      if (Object.keys(response).length) {
        const serializedResponse = this.serializeResponse(response);
        client.send(serializedResponse);
@@ -570,7 +631,7 @@ class WebsocketHandler {
    });
  }
 
-  async handleNewBlock(block: BlockExtended, txIds: string[], transactions: TransactionExtended[]): Promise<void> {
+  async handleNewBlock(block: BlockExtended, txIds: string[], transactions: MempoolTransactionExtended[]): Promise<void> {
    if (!this.wss) {
      throw new Error('WebSocket.Server is not set');
    }
@@ -579,7 +640,11 @@ class WebsocketHandler {

    const _memPool = memPool.getMempool();

-    if (config.MEMPOOL.AUDIT) {
+    const rbfTransactions = Common.findMinedRbfTransactions(transactions, memPool.getSpendMap());
+    memPool.handleMinedRbfTransactions(rbfTransactions);
+    memPool.removeFromSpendMap(transactions);
+
+    if (config.MEMPOOL.AUDIT && memPool.isInSync()) {
      let projectedBlocks;
      let auditMempool = _memPool;
      // template calculation functions have mempool side effects, so calculate audits using
@@ -588,7 +653,11 @@ class WebsocketHandler {
      if (separateAudit) {
        auditMempool = deepClone(_memPool);
        if (config.MEMPOOL.ADVANCED_GBT_AUDIT) {
-          projectedBlocks = await mempoolBlocks.$makeBlockTemplates(auditMempool, false);
+          if (config.MEMPOOL.RUST_GBT) {
+            projectedBlocks = await mempoolBlocks.$oneOffRustBlockTemplates(auditMempool);
+          } else {
+            projectedBlocks = await mempoolBlocks.$makeBlockTemplates(auditMempool, false);
+          }
        } else {
          projectedBlocks = mempoolBlocks.updateMempoolBlocks(auditMempool, false);
        }
@@ -596,8 +665,8 @@ class WebsocketHandler {
        projectedBlocks = mempoolBlocks.getMempoolBlocksWithTransactions();
      }

-      if (Common.indexingEnabled() && memPool.isInSync()) {
-        const { censored, added, fresh, sigop, score, similarity } = Audit.auditBlock(transactions, projectedBlocks, auditMempool);
+      if (Common.indexingEnabled()) {
+        const { censored, added, fresh, sigop, fullrbf, score, similarity } = Audit.auditBlock(transactions, projectedBlocks, auditMempool);
        const matchRate = Math.round(score * 100 * 100) / 100;

        const stripped = projectedBlocks[0]?.transactions ? projectedBlocks[0].transactions : [];
@@ -625,6 +694,7 @@ class WebsocketHandler {
          missingTxs: censored,
          freshTxs: fresh,
          sigopTxs: sigop,
+          fullrbfTxs: fullrbf,
          matchRate: matchRate,
          expectedFees: totalFees,
          expectedWeight: totalWeight,
@@ -644,10 +714,6 @@ class WebsocketHandler {
      }
    }

-    const rbfTransactions = Common.findMinedRbfTransactions(transactions, memPool.getSpendMap());
-    memPool.handleMinedRbfTransactions(rbfTransactions);
-    memPool.removeFromSpendMap(transactions);
-
    // Update mempool to remove transactions included in the new block
    for (const txId of txIds) {
      delete _memPool[txId];
@@ -655,7 +721,11 @@ class WebsocketHandler {
    }

    if (config.MEMPOOL.ADVANCED_GBT_MEMPOOL) {
-      await mempoolBlocks.$makeBlockTemplates(_memPool, true);
+      if (config.MEMPOOL.RUST_GBT) {
+        await mempoolBlocks.$rustUpdateBlockTemplates(_memPool, Object.keys(_memPool).length, [], transactions);
+      } else {
+        await mempoolBlocks.$makeBlockTemplates(_memPool, true);
+      }
    } else {
      mempoolBlocks.updateMempoolBlocks(_memPool, true);
    }
@@ -788,7 +858,7 @@ class WebsocketHandler {
        }
      }

-      if (client['track-mempool-block'] >= 0) {
+      if (client['track-mempool-block'] >= 0 && memPool.isInSync()) {
        const index = client['track-mempool-block'];
        if (mBlockDeltas && mBlockDeltas[index]) {
          response['projected-block-transactions'] = getCachedResponse(`projected-block-transactions-${index}`, {
--- a/backend/src/config.ts
+++ b/backend/src/config.ts
@@ -12,6 +12,7 @@ interface IConfig {
    API_URL_PREFIX: string;
    POLL_RATE_MS: number;
    CACHE_DIR: string;
+    CACHE_ENABLED: boolean;
    CLEAR_PROTECTION_MINUTES: number;
    RECOMMENDED_FEE_PERCENTILE: number;
    BLOCK_WEIGHT_UNITS: number;
@@ -31,9 +32,12 @@ interface IConfig {
    AUDIT: boolean;
    ADVANCED_GBT_AUDIT: boolean;
    ADVANCED_GBT_MEMPOOL: boolean;
+    RUST_GBT: boolean;
    CPFP_INDEXING: boolean;
    MAX_BLOCKS_BULK_QUERY: number;
    DISK_CACHE_BLOCK_INTERVAL: number;
+    MAX_PUSH_TX_SIZE_WEIGHT: number;
+    ALLOW_UNREACHABLE: boolean;
  };
  ESPLORA: {
    REST_API_URL: string;
@@ -129,6 +133,16 @@ interface IConfig {
    GEOLITE2_ASN: string;
    GEOIP2_ISP: string;
  },
+  REPLICATION: {
+    ENABLED: boolean;
+    AUDIT: boolean;
+    AUDIT_START_HEIGHT: number;
+    SERVERS: string[];
+  },
+  REDIS: {
+    ENABLED: boolean;
+    UNIX_SOCKET_PATH: string;
+  },
 }

 const defaults: IConfig = {
@@ -141,6 +155,7 @@ const defaults: IConfig = {
    'API_URL_PREFIX': '/api/v1/',
    'POLL_RATE_MS': 2000,
    'CACHE_DIR': './cache',
+    'CACHE_ENABLED': true,
    'CLEAR_PROTECTION_MINUTES': 20,
    'RECOMMENDED_FEE_PERCENTILE': 50,
    'BLOCK_WEIGHT_UNITS': 4000000,
@@ -160,9 +175,12 @@ const defaults: IConfig = {
    'AUDIT': false,
    'ADVANCED_GBT_AUDIT': false,
    'ADVANCED_GBT_MEMPOOL': false,
+    'RUST_GBT': false,
    'CPFP_INDEXING': false,
    'MAX_BLOCKS_BULK_QUERY': 0,
    'DISK_CACHE_BLOCK_INTERVAL': 6,
+    'MAX_PUSH_TX_SIZE_WEIGHT': 400000,
+    'ALLOW_UNREACHABLE': true,
  },
  'ESPLORA': {
    'REST_API_URL': 'http://127.0.0.1:3000',
@@ -258,6 +276,16 @@ const defaults: IConfig = {
    'GEOLITE2_ASN': '/usr/local/share/GeoIP/GeoLite2-ASN.mmdb',
    'GEOIP2_ISP': '/usr/local/share/GeoIP/GeoIP2-ISP.mmdb'
  },
+  'REPLICATION': {
+    'ENABLED': false,
+    'AUDIT': false,
+    'AUDIT_START_HEIGHT': 774000,
+    'SERVERS': [],
+  },
+  'REDIS': {
+    'ENABLED': false,
+    'UNIX_SOCKET_PATH': '',
+  },
 };

 class Config implements IConfig {
@@ -277,6 +305,8 @@ class Config implements IConfig {
  PRICE_DATA_SERVER: IConfig['PRICE_DATA_SERVER'];
  EXTERNAL_DATA_SERVER: IConfig['EXTERNAL_DATA_SERVER'];
  MAXMIND: IConfig['MAXMIND'];
+  REPLICATION: IConfig['REPLICATION'];
+  REDIS: IConfig['REDIS'];

  constructor() {
    const configs = this.merge(configFromFile, defaults);
@@ -296,6 +326,8 @@ class Config implements IConfig {
    this.PRICE_DATA_SERVER = configs.PRICE_DATA_SERVER;
    this.EXTERNAL_DATA_SERVER = configs.EXTERNAL_DATA_SERVER;
    this.MAXMIND = configs.MAXMIND;
+    this.REPLICATION = configs.REPLICATION;
+    this.REDIS = configs.REDIS;
  }

  merge = (...objects: object[]): IConfig => {
--- a/backend/src/index.ts
+++ b/backend/src/index.ts
@@ -41,6 +41,7 @@ import chainTips from './api/chain-tips';
 import { AxiosError } from 'axios';
 import v8 from 'v8';
 import { formatBytes, getBytesUnit } from './utils/format';
+import redisCache from './api/redis-cache';

 class Server {
  private wss: WebSocket.Server | undefined;
@@ -122,7 +123,11 @@ class Server {
    await poolsUpdater.updatePoolsJson(); // Needs to be done before loading the disk cache because we sometimes wipe it
    await syncAssets.syncAssets$();
    if (config.MEMPOOL.ENABLED) {
-      await diskCache.$loadMempoolCache();
+      if (config.MEMPOOL.CACHE_ENABLED) {
+        await diskCache.$loadMempoolCache();
+      } else if (config.REDIS.ENABLED) {
+        await redisCache.$loadCache();
+      }
    }

    if (config.STATISTICS.ENABLED && config.DATABASE.ENABLED && cluster.isPrimary) {
@@ -169,6 +174,7 @@ class Server {
  }

  async runMainUpdateLoop(): Promise<void> {
+    const start = Date.now();
    try {
      try {
        await memPool.$updateMemPoolInfo();
@@ -188,7 +194,9 @@ class Server {
      indexer.$run();

      // rerun immediately if we skipped the mempool update, otherwise wait POLL_RATE_MS
-      setTimeout(this.runMainUpdateLoop.bind(this), numHandledBlocks > 0 ? 1 : config.MEMPOOL.POLL_RATE_MS);
+      const elapsed = Date.now() - start;
+      const remainingTime = Math.max(0, config.MEMPOOL.POLL_RATE_MS - elapsed)
+      setTimeout(this.runMainUpdateLoop.bind(this), numHandledBlocks > 0 ? 0 : remainingTime);
      this.backendRetryCount = 0;
    } catch (e: any) {
      this.backendRetryCount++;
--- a/backend/src/indexer.ts
+++ b/backend/src/indexer.ts
@@ -6,6 +6,8 @@ import logger from './logger';
 import bitcoinClient from './api/bitcoin/bitcoin-client';
 import priceUpdater from './tasks/price-updater';
 import PricesRepository from './repositories/PricesRepository';
+import config from './config';
+import auditReplicator from './replication/AuditReplication';

 export interface CoreIndex {
  name: string;
@@ -72,7 +74,7 @@ class Indexer {
      return;
    }

-    if (task === 'blocksPrices' && !this.tasksRunning.includes(task)) {
+    if (task === 'blocksPrices' && !this.tasksRunning.includes(task) && !['testnet', 'signet'].includes(config.MEMPOOL.NETWORK)) {
      this.tasksRunning.push(task);
      const lastestPriceId = await PricesRepository.$getLatestPriceId();
      if (priceUpdater.historyInserted === false || lastestPriceId === null) {
@@ -135,6 +137,7 @@ class Indexer {
      await blocks.$generateBlocksSummariesDatabase();
      await blocks.$generateCPFPDatabase();
      await blocks.$generateAuditStats();
+      await auditReplicator.$sync();
    } catch (e) {
      this.indexerRunning = false;
      logger.err(`Indexer failed, trying again in 10 seconds. Reason: ` + (e instanceof Error ? e.message : e));
--- a/backend/src/mempool.interfaces.ts
+++ b/backend/src/mempool.interfaces.ts
@@ -34,6 +34,7 @@ export interface BlockAudit {
  missingTxs: string[],
  freshTxs: string[],
  sigopTxs: string[],
+  fullrbfTxs: string[],
  addedTxs: string[],
  matchRate: number,
  expectedFees?: number,
@@ -94,9 +95,12 @@ export interface TransactionExtended extends IEsploraApi.Transaction {
 }

 export interface MempoolTransactionExtended extends TransactionExtended {
+  order: number;
  sigops: number;
  adjustedVsize: number;
  adjustedFeePerVsize: number;
+  inputs?: number[];
+  lastBoosted?: number;
 }

 export interface AuditTransaction {
@@ -126,9 +130,9 @@ export interface CompactThreadTransaction {
  weight: number;
  sigops: number;
  feePerVsize: number;
-  effectiveFeePerVsize?: number;
+  effectiveFeePerVsize: number;
  inputs: number[];
-  cpfpRoot?: string;
+  cpfpRoot?: number;
  cpfpChecked?: boolean;
  dirty?: boolean;
 }
@@ -225,6 +229,7 @@ export interface BlockExtension {
 */
 export interface BlockExtended extends IEsploraApi.Block {
  extras: BlockExtension;
+  canonical?: string;
 }

 export interface BlockSummary {
@@ -232,6 +237,15 @@ export interface BlockSummary {
  transactions: TransactionStripped[];
 }

+export interface AuditSummary extends BlockAudit {
+  timestamp?: number,
+  size?: number,
+  weight?: number,
+  tx_count?: number,
+  transactions: TransactionStripped[];
+  template?: TransactionStripped[];
+}
+
 export interface BlockPrice {
  height: number;
  priceId: number;
--- a/backend/src/replication/AuditReplication.ts
+++ b/backend/src/replication/AuditReplication.ts
@@ -0,0 +1,134 @@
+import DB from '../database';
+import logger from '../logger';
+import { AuditSummary } from '../mempool.interfaces';
+import blocksAuditsRepository from '../repositories/BlocksAuditsRepository';
+import blocksSummariesRepository from '../repositories/BlocksSummariesRepository';
+import { $sync } from './replicator';
+import config from '../config';
+import { Common } from '../api/common';
+import blocks from '../api/blocks';
+
+const BATCH_SIZE = 16;
+
+/**
+ * Syncs missing block template and audit data from trusted servers
+ */
+class AuditReplication {
+  inProgress: boolean = false;
+  skip: Set<string> = new Set();
+
+  public async $sync(): Promise<void> {
+    if (!config.REPLICATION.ENABLED || !config.REPLICATION.AUDIT) {
+      // replication not enabled
+      return;
+    }
+    if (this.inProgress) {
+      logger.info(`AuditReplication sync already in progress`, 'Replication');
+      return;
+    }
+    this.inProgress = true;
+
+    const missingAudits = await this.$getMissingAuditBlocks();
+
+    logger.debug(`Fetching missing audit data for ${missingAudits.length} blocks from trusted servers`, 'Replication');
+    
+    let totalSynced = 0;
+    let totalMissed = 0;
+    let loggerTimer = Date.now();
+    // process missing audits in batches of 
+    for (let i = 0; i < missingAudits.length; i += BATCH_SIZE) {
+      const slice = missingAudits.slice(i, i + BATCH_SIZE);
+      const results = await Promise.all(slice.map(hash => this.$syncAudit(hash)));
+      const synced = results.reduce((total, status) => status ? total + 1 : total, 0);
+      totalSynced += synced;
+      totalMissed += (slice.length - synced);
+      if (Date.now() - loggerTimer > 10000) {
+        loggerTimer = Date.now();
+        logger.info(`Found ${totalSynced} / ${totalSynced + totalMissed} of ${missingAudits.length} missing audits`, 'Replication');
+      }
+      await Common.sleep$(1000);
+    }
+
+    logger.debug(`Fetched ${totalSynced} audits, ${totalMissed} still missing`, 'Replication');
+
+    this.inProgress = false;
+  }
+
+  private async $syncAudit(hash: string): Promise<boolean> {
+    if (this.skip.has(hash)) {
+      // we already know none of our trusted servers have this audit
+      return false;
+    }
+
+    let success = false;
+    // start with a random server so load is uniformly spread
+    const syncResult = await $sync(`/api/v1/block/${hash}/audit-summary`);
+    if (syncResult) {
+      if (syncResult.data?.template?.length) {
+        await this.$saveAuditData(hash, syncResult.data);
+        logger.info(`Imported audit data from ${syncResult.server} for block ${syncResult.data.height} (${hash})`);
+        success = true;
+      }
+      if (!syncResult.data && !syncResult.exists) {
+        this.skip.add(hash);
+      }
+    }
+
+    return success;
+  }
+
+  private async $getMissingAuditBlocks(): Promise<string[]> {
+    try {
+      const startHeight = config.REPLICATION.AUDIT_START_HEIGHT || 0;
+      const [rows]: any[] = await DB.query(`
+        SELECT auditable.hash, auditable.height
+        FROM (
+          SELECT hash, height
+          FROM blocks
+          WHERE height >= ?
+        ) AS auditable
+        LEFT JOIN blocks_audits ON auditable.hash = blocks_audits.hash
+        WHERE blocks_audits.hash IS NULL
+        ORDER BY auditable.height DESC
+      `, [startHeight]);
+      return rows.map(row => row.hash);
+    } catch (e: any) {
+      logger.err(`Cannot fetch missing audit blocks from db. Reason: ` + (e instanceof Error ? e.message : e));
+      throw e;
+    }
+  }
+
+  private async $saveAuditData(blockHash: string, auditSummary: AuditSummary): Promise<void> {
+    // save audit & template to DB
+    await blocksSummariesRepository.$saveTemplate({
+      height: auditSummary.height,
+      template: {
+        id: blockHash,
+        transactions: auditSummary.template || []
+      }
+    });
+    await blocksAuditsRepository.$saveAudit({
+      hash: blockHash,
+      height: auditSummary.height,
+      time: auditSummary.timestamp || auditSummary.time,
+      missingTxs: auditSummary.missingTxs || [],
+      addedTxs: auditSummary.addedTxs || [],
+      freshTxs: auditSummary.freshTxs || [],
+      sigopTxs: auditSummary.sigopTxs || [],
+      fullrbfTxs: auditSummary.fullrbfTxs || [],
+      matchRate: auditSummary.matchRate,
+      expectedFees: auditSummary.expectedFees,
+      expectedWeight: auditSummary.expectedWeight,
+    });
+    // add missing data to cached blocks
+    const cachedBlock = blocks.getBlocks().find(block => block.id === blockHash);
+    if (cachedBlock) {
+      cachedBlock.extras.matchRate = auditSummary.matchRate;
+      cachedBlock.extras.expectedFees = auditSummary.expectedFees || null;
+      cachedBlock.extras.expectedWeight = auditSummary.expectedWeight || null;
+    }
+  }
+}
+
+export default new AuditReplication();
+
--- a/backend/src/replication/replicator.ts
+++ b/backend/src/replication/replicator.ts
@@ -0,0 +1,70 @@
+import config from '../config';
+import backendInfo from '../api/backend-info';
+import axios, { AxiosResponse } from 'axios';
+import { SocksProxyAgent } from 'socks-proxy-agent';
+import * as https from 'https';
+
+export async function $sync(path): Promise<{ data?: any, exists: boolean, server?: string }> {
+  // start with a random server so load is uniformly spread
+  let allMissing = true;
+  const offset = Math.floor(Math.random() * config.REPLICATION.SERVERS.length);
+  for (let i = 0; i < config.REPLICATION.SERVERS.length; i++) {
+    const server = config.REPLICATION.SERVERS[(i + offset) % config.REPLICATION.SERVERS.length];
+    // don't query ourself
+    if (server === backendInfo.getBackendInfo().hostname) {
+      continue;
+    }
+    
+    try {
+      const result = await query(`https://${server}${path}`);
+      if (result) {
+        return { data: result, exists: true, server };
+      }
+    } catch (e: any) {
+      if (e?.response?.status === 404) {
+        // this server is also missing this data
+      } else {
+        // something else went wrong
+        allMissing = false;
+      }
+    }
+  }
+
+  return { exists: !allMissing };
+}
+
+export async function query(path): Promise<object> {
+  type axiosOptions = {
+    headers: {
+      'User-Agent': string
+    };
+    timeout: number;
+    httpsAgent?: https.Agent;
+  };
+  const axiosOptions: axiosOptions = {
+    headers: {
+      'User-Agent': (config.MEMPOOL.USER_AGENT === 'mempool') ? `mempool/v${backendInfo.getBackendInfo().version}` : `${config.MEMPOOL.USER_AGENT}`
+    },
+    timeout: config.SOCKS5PROXY.ENABLED ? 30000 : 10000
+  };
+
+  if (config.SOCKS5PROXY.ENABLED) {
+    const socksOptions = {
+      agentOptions: {
+        keepAlive: true,
+      },
+      hostname: config.SOCKS5PROXY.HOST,
+      port: config.SOCKS5PROXY.PORT,
+      username: config.SOCKS5PROXY.USERNAME || 'circuit0',
+      password: config.SOCKS5PROXY.PASSWORD,
+    };
+
+    axiosOptions.httpsAgent = new SocksProxyAgent(socksOptions);
+  }
+
+  const data: AxiosResponse = await axios.get(path, axiosOptions);
+  if (data.statusText === 'error' || !data.data) {
+    throw new Error(`${data.status}`);
+  }
+  return data.data;
+}
--- a/backend/src/repositories/BlocksAuditsRepository.ts
+++ b/backend/src/repositories/BlocksAuditsRepository.ts
@@ -6,9 +6,9 @@ import { BlockAudit, AuditScore } from '../mempool.interfaces';
 class BlocksAuditRepositories {
  public async $saveAudit(audit: BlockAudit): Promise<void> {
    try {
-      await DB.query(`INSERT INTO blocks_audits(time, height, hash, missing_txs, added_txs, fresh_txs, sigop_txs, match_rate, expected_fees, expected_weight)
-        VALUE (FROM_UNIXTIME(?), ?, ?, ?, ?, ?, ?, ?, ?, ?)`, [audit.time, audit.height, audit.hash, JSON.stringify(audit.missingTxs),
-          JSON.stringify(audit.addedTxs), JSON.stringify(audit.freshTxs), JSON.stringify(audit.sigopTxs), audit.matchRate, audit.expectedFees, audit.expectedWeight]);
+      await DB.query(`INSERT INTO blocks_audits(time, height, hash, missing_txs, added_txs, fresh_txs, sigop_txs, fullrbf_txs, match_rate, expected_fees, expected_weight)
+        VALUE (FROM_UNIXTIME(?), ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`, [audit.time, audit.height, audit.hash, JSON.stringify(audit.missingTxs),
+          JSON.stringify(audit.addedTxs), JSON.stringify(audit.freshTxs), JSON.stringify(audit.sigopTxs), JSON.stringify(audit.fullrbfTxs), audit.matchRate, audit.expectedFees, audit.expectedWeight]);
    } catch (e: any) {
      if (e.errno === 1062) { // ER_DUP_ENTRY - This scenario is possible upon node backend restart
        logger.debug(`Cannot save block audit for block ${audit.hash} because it has already been indexed, ignoring`);
@@ -62,18 +62,17 @@ class BlocksAuditRepositories {
  public async $getBlockAudit(hash: string): Promise<any> {
    try {
      const [rows]: any[] = await DB.query(
-        `SELECT blocks.height, blocks.hash as id, UNIX_TIMESTAMP(blocks.blockTimestamp) as timestamp, blocks.size,
-        blocks.weight, blocks.tx_count,
+        `SELECT blocks_audits.height, blocks_audits.hash as id, UNIX_TIMESTAMP(blocks_audits.time) as timestamp,
        template,
        missing_txs as missingTxs,
        added_txs as addedTxs,
        fresh_txs as freshTxs,
        sigop_txs as sigopTxs,
+        fullrbf_txs as fullrbfTxs,
        match_rate as matchRate,
        expected_fees as expectedFees,
        expected_weight as expectedWeight
        FROM blocks_audits
-        JOIN blocks ON blocks.hash = blocks_audits.hash
        JOIN blocks_templates ON blocks_templates.id = blocks_audits.hash
        WHERE blocks_audits.hash = "${hash}"
      `);
@@ -83,6 +82,7 @@ class BlocksAuditRepositories {
        rows[0].addedTxs = JSON.parse(rows[0].addedTxs);
        rows[0].freshTxs = JSON.parse(rows[0].freshTxs);
        rows[0].sigopTxs = JSON.parse(rows[0].sigopTxs);
+        rows[0].fullrbfTxs = JSON.parse(rows[0].fullrbfTxs);
        rows[0].template = JSON.parse(rows[0].template);

        return rows[0];
--- a/backend/src/repositories/BlocksRepository.ts
+++ b/backend/src/repositories/BlocksRepository.ts
@@ -401,7 +401,7 @@ class BlocksRepository {
  /**
   * Get average block health for all blocks for a single pool
   */
-  public async $getAvgBlockHealthPerPoolId(poolId: number): Promise<number> {
+  public async $getAvgBlockHealthPerPoolId(poolId: number): Promise<number | null> {
    const params: any[] = [];
    const query = `
      SELECT AVG(blocks_audits.match_rate) AS avg_match_rate
@@ -413,8 +413,8 @@ class BlocksRepository {

    try {
      const [rows] = await DB.query(query, params);
-      if (!rows[0] || !rows[0].avg_match_rate) {
-        return 0;
+      if (!rows[0] || rows[0].avg_match_rate == null) {
+        return null;
      }
      return Math.round(rows[0].avg_match_rate * 100) / 100;
    } catch (e) {
--- a/backend/src/tasks/lightning/network-sync.service.ts
+++ b/backend/src/tasks/lightning/network-sync.service.ts
@@ -3,7 +3,6 @@ import logger from '../../logger';
 import channelsApi from '../../api/explorer/channels.api';
 import bitcoinApi from '../../api/bitcoin/bitcoin-api-factory';
 import config from '../../config';
-import { IEsploraApi } from '../../api/bitcoin/esplora-api.interface';
 import { ILightningApi } from '../../api/lightning/lightning-api.interface';
 import { $lookupNodeLocation } from './sync-tasks/node-locations';
 import lightningApi from '../../api/lightning/lightning-api-factory';
@@ -269,7 +268,11 @@ class NetworkSyncService {
  }

  private async $scanForClosedChannels(): Promise<void> {
-    if (this.closedChannelsScanBlock === blocks.getCurrentBlockHeight()) {
+    let currentBlockHeight = blocks.getCurrentBlockHeight();
+    if (config.MEMPOOL.ENABLED === false) { // https://github.com/mempool/mempool/issues/3582
+      currentBlockHeight = await bitcoinApi.$getBlockHeightTip();
+    }
+    if (this.closedChannelsScanBlock === currentBlockHeight) {
      logger.debug(`We've already scan closed channels for this block, skipping.`);
      return;
    }
@@ -305,7 +308,7 @@ class NetworkSyncService {
        }
      }

-      this.closedChannelsScanBlock = blocks.getCurrentBlockHeight();
+      this.closedChannelsScanBlock = currentBlockHeight;
      logger.debug(`Closed channels scan completed at block ${this.closedChannelsScanBlock}`, logger.tags.ln);
    } catch (e) {
      logger.err(`$scanForClosedChannels() error: ${e instanceof Error ? e.message : e}`, logger.tags.ln);
--- a/backend/src/tasks/price-updater.ts
+++ b/backend/src/tasks/price-updater.ts
@@ -153,6 +153,7 @@ class PriceUpdater {
      try {
        const p = 60 * 60 * 1000; // milliseconds in an hour
        const nowRounded = new Date(Math.round(new Date().getTime() / p) * p); // https://stackoverflow.com/a/28037042
+        this.latestPrices.time = nowRounded.getTime() / 1000;
        await PricesRepository.$savePrices(nowRounded.getTime() / 1000, this.latestPrices);
      } catch (e) {
        this.lastRun = previousRun + 5 * 60;
--- a/backend/src/utils/format.ts
+++ b/backend/src/utils/format.ts
@@ -26,4 +26,70 @@ export function formatBytes(bytes: number, toUnit: string, skipUnit = false): st
  }

  return `${bytes.toFixed(2)}${skipUnit ? '' : ' ' + byteUnits[unitIndex]}`;
+}
+
+// https://stackoverflow.com/a/64235212
+export function hex2bin(hex: string): string {
+  if (!hex) {
+    return '';
+  }
+
+  hex = hex.replace('0x', '').toLowerCase();
+  let out = '';
+
+  for (const c of hex) {
+    switch (c) {
+      case '0': out += '0000'; break;
+      case '1': out += '0001'; break;
+      case '2': out += '0010'; break;
+      case '3': out += '0011'; break;
+      case '4': out += '0100'; break;
+      case '5': out += '0101'; break;
+      case '6': out += '0110'; break;
+      case '7': out += '0111'; break;
+      case '8': out += '1000'; break;
+      case '9': out += '1001'; break;
+      case 'a': out += '1010'; break;
+      case 'b': out += '1011'; break;
+      case 'c': out += '1100'; break;
+      case 'd': out += '1101'; break;
+      case 'e': out += '1110'; break;
+      case 'f': out += '1111'; break;
+      default: return '';
+    }
+  }
+  return out;
+}
+
+export function bin2hex(bin: string): string {
+  if (!bin) {
+    return '';
+  }
+
+  let out = '';
+
+  for (let i = 0; i < bin.length; i += 4) {
+    const c = bin.substring(i, i + 4);
+    switch (c) {
+      case '0000': out += '0'; break;
+      case '0001': out += '1'; break;
+      case '0010': out += '2'; break;
+      case '0011': out += '3'; break;
+      case '0100': out += '4'; break;
+      case '0101': out += '5'; break;
+      case '0110': out += '6'; break;
+      case '0111': out += '7'; break;
+      case '1000': out += '8'; break;
+      case '1001': out += '9'; break;
+      case '1010': out += 'a'; break;
+      case '1011': out += 'b'; break;
+      case '1100': out += 'c'; break;
+      case '1101': out += 'd'; break;
+      case '1110': out += 'e'; break;
+      case '1111': out += 'f'; break;
+      default: return '';
+    }
+  }
+
+  return out;
 }
--- a/contributors/bennyhodl.txt
+++ b/contributors/bennyhodl.txt
@@ -0,0 +1,3 @@
+I hereby accept the terms of the Contributor License Agreement in the CONTRIBUTING.md file of the mempool/mempool git repository as of June 28, 2023.
+
+Signed: bennyhodl
--- a/contributors/devinbileck.txt
+++ b/contributors/devinbileck.txt
@@ -0,0 +1,3 @@
+I hereby accept the terms of the Contributor License Agreement in the CONTRIBUTING.md file of the mempool/mempool git repository as of July 21, 2023.
+
+Signed: devinbileck
--- a/contributors/learntheropes.txt
+++ b/contributors/learntheropes.txt
@@ -0,0 +1,3 @@
+I hereby accept the terms of the Contributor License Agreement in the CONTRIBUTING.md file of the mempool/mempool git repository as of April 7, 203.
+
+Signed: learntheropes
--- a/contributors/nothing0012.txt
+++ b/contributors/nothing0012.txt
@@ -0,0 +1,3 @@
+I hereby accept the terms of the Contributor License Agreement in the CONTRIBUTING.md file of the mempool/mempool git repository as of April 8, 2023.
+
+Signed: nothing0012
--- a/contributors/pedromvpg.txt
+++ b/contributors/pedromvpg.txt
@@ -0,0 +1,3 @@
+I hereby accept the terms of the Contributor License Agreement in the CONTRIBUTING.md file of the mempool/mempool git repository as of July 20, 2023.
+
+Signed: pedromvpg
--- a/contributors/pfoytik.txt
+++ b/contributors/pfoytik.txt
@@ -0,0 +1,3 @@
+I hereby accept the terms of the Contributor License Agreement in the CONTRIBUTING.md file of the mempool/mempool git repository as of June 15, 2023.
+
+Signed pfoytik
--- a/contributors/secondl1ght.txt
+++ b/contributors/secondl1ght.txt
@@ -0,0 +1,3 @@
+I hereby accept the terms of the Contributor License Agreement in the CONTRIBUTING.md file of the mempool/mempool git repository as of June 14, 2023.
+
+Signed: secondl1ght
--- a/docker/README.md
+++ b/docker/README.md
@@ -144,8 +144,8 @@ Corresponding `docker-compose.yml` overrides:
      MEMPOOL_ADVANCED_GBT_AUDIT: ""
      MEMPOOL_ADVANCED_GBT_MEMPOOL: ""
      MEMPOOL_CPFP_INDEXING: ""
-      MAX_BLOCKS_BULK_QUERY: ""
-      DISK_CACHE_BLOCK_INTERVAL: ""
+      MEMPOOL_MAX_BLOCKS_BULK_QUERY: ""
+      MEMPOOL_DISK_CACHE_BLOCK_INTERVAL: ""
      ...
 ```

--- a/docker/backend/Dockerfile
+++ b/docker/backend/Dockerfile
@@ -7,7 +7,13 @@ WORKDIR /build
 COPY . .

 RUN apt-get update
-RUN apt-get install -y build-essential python3 pkg-config
+RUN apt-get install -y build-essential python3 pkg-config curl ca-certificates
+
+# Install Rust via rustup
+RUN CPU_ARCH=$(uname -m); if [ "$CPU_ARCH" = "armv7l" ]; then c_rehash; fi
+RUN curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain stable
+ENV PATH="/root/.cargo/bin:$PATH"
+
 RUN npm install --omit=dev --omit=optional
 RUN npm run package

--- a/docker/backend/mempool-config.json
+++ b/docker/backend/mempool-config.json
@@ -25,9 +25,12 @@
    "AUDIT": __MEMPOOL_AUDIT__,
    "ADVANCED_GBT_AUDIT": __MEMPOOL_ADVANCED_GBT_AUDIT__,
    "ADVANCED_GBT_MEMPOOL": __MEMPOOL_ADVANCED_GBT_MEMPOOL__,
+    "RUST_GBT": __MEMPOOL_RUST_GBT__,
    "CPFP_INDEXING": __MEMPOOL_CPFP_INDEXING__,
    "MAX_BLOCKS_BULK_QUERY": __MEMPOOL_MAX_BLOCKS_BULK_QUERY__,
    "DISK_CACHE_BLOCK_INTERVAL": __MEMPOOL_DISK_CACHE_BLOCK_INTERVAL__,
+    "MAX_PUSH_TX_SIZE_WEIGHT": __MEMPOOL_MAX_PUSH_TX_SIZE_WEIGHT__,
+    "ALLOW_UNREACHABLE": __MEMPOOL_ALLOW_UNREACHABLE__,
    "POOLS_JSON_TREE_URL": "__MEMPOOL_POOLS_JSON_TREE_URL__",
    "POOLS_JSON_URL": "__MEMPOOL_POOLS_JSON_URL__"
  },
@@ -124,5 +127,11 @@
    "GEOLITE2_CITY": "__MAXMIND_GEOLITE2_CITY__",
    "GEOLITE2_ASN": "__MAXMIND_GEOLITE2_ASN__",
    "GEOIP2_ISP": "__MAXMIND_GEOIP2_ISP__"
+  },
+  "REPLICATION": {
+    "ENABLED": __REPLICATION_ENABLED__,
+    "AUDIT": __REPLICATION_AUDIT__,
+    "AUDIT_START_HEIGHT": __REPLICATION_AUDIT_START_HEIGHT__,
+    "SERVERS": __REPLICATION_SERVERS__
  }
-}
+}
--- a/docker/backend/start.sh
+++ b/docker/backend/start.sh
@@ -28,9 +28,13 @@ __MEMPOOL_POOLS_JSON_TREE_URL__=${MEMPOOL_POOLS_JSON_TREE_URL:=https://api.githu
 __MEMPOOL_AUDIT__=${MEMPOOL_AUDIT:=false}
 __MEMPOOL_ADVANCED_GBT_AUDIT__=${MEMPOOL_ADVANCED_GBT_AUDIT:=false}
 __MEMPOOL_ADVANCED_GBT_MEMPOOL__=${MEMPOOL_ADVANCED_GBT_MEMPOOL:=false}
+__MEMPOOL_RUST_GBT__=${MEMPOOL_RUST_GBT:=false}
 __MEMPOOL_CPFP_INDEXING__=${MEMPOOL_CPFP_INDEXING:=false}
 __MEMPOOL_MAX_BLOCKS_BULK_QUERY__=${MEMPOOL_MAX_BLOCKS_BULK_QUERY:=0}
 __MEMPOOL_DISK_CACHE_BLOCK_INTERVAL__=${MEMPOOL_DISK_CACHE_BLOCK_INTERVAL:=6}
+__MEMPOOL_MAX_PUSH_TX_SIZE_WEIGHT__=${MEMPOOL_MAX_PUSH_TX_SIZE_WEIGHT:=4000000}
+__MEMPOOL_ALLOW_UNREACHABLE__=${MEMPOOL_ALLOW_UNREACHABLE:=true}
+

 # CORE_RPC
 __CORE_RPC_HOST__=${CORE_RPC_HOST:=127.0.0.1}
@@ -126,6 +130,12 @@ __MAXMIND_GEOLITE2_CITY__=${MAXMIND_GEOLITE2_CITY:="/backend/GeoIP/GeoLite2-City
 __MAXMIND_GEOLITE2_ASN__=${MAXMIND_GEOLITE2_ASN:="/backend/GeoIP/GeoLite2-ASN.mmdb"}
 __MAXMIND_GEOIP2_ISP__=${MAXMIND_GEOIP2_ISP:=""}

+# REPLICATION
+__REPLICATION_ENABLED__=${REPLICATION_ENABLED:=true}
+__REPLICATION_AUDIT__=${REPLICATION_AUDIT:=true}
+__REPLICATION_AUDIT_START_HEIGHT__=${REPLICATION_AUDIT_START_HEIGHT:=774000}
+__REPLICATION_SERVERS__=${REPLICATION_SERVERS:=[]}
+

 mkdir -p "${__MEMPOOL_CACHE_DIR__}"

@@ -155,10 +165,13 @@ sed -i "s!__MEMPOOL_POOLS_JSON_URL__!${__MEMPOOL_POOLS_JSON_URL__}!g" mempool-co
 sed -i "s!__MEMPOOL_POOLS_JSON_TREE_URL__!${__MEMPOOL_POOLS_JSON_TREE_URL__}!g" mempool-config.json
 sed -i "s!__MEMPOOL_AUDIT__!${__MEMPOOL_AUDIT__}!g" mempool-config.json
 sed -i "s!__MEMPOOL_ADVANCED_GBT_MEMPOOL__!${__MEMPOOL_ADVANCED_GBT_MEMPOOL__}!g" mempool-config.json
+sed -i "s!__MEMPOOL_RUST_GBT__!${__MEMPOOL_GBT__}!g" mempool-config.json
 sed -i "s!__MEMPOOL_ADVANCED_GBT_AUDIT__!${__MEMPOOL_ADVANCED_GBT_AUDIT__}!g" mempool-config.json
 sed -i "s!__MEMPOOL_CPFP_INDEXING__!${__MEMPOOL_CPFP_INDEXING__}!g" mempool-config.json
 sed -i "s!__MEMPOOL_MAX_BLOCKS_BULK_QUERY__!${__MEMPOOL_MAX_BLOCKS_BULK_QUERY__}!g" mempool-config.json
 sed -i "s!__MEMPOOL_DISK_CACHE_BLOCK_INTERVAL__!${__MEMPOOL_DISK_CACHE_BLOCK_INTERVAL__}!g" mempool-config.json
+sed -i "s!__MEMPOOL_MAX_PUSH_TX_SIZE_WEIGHT__!${__MEMPOOL_MAX_PUSH_TX_SIZE_WEIGHT__}!g" mempool-config.json
+sed -i "s!__MEMPOOL_ALLOW_UNREACHABLE__!${__MEMPOOL_ALLOW_UNREACHABLE__}!g" mempool-config.json

 sed -i "s!__CORE_RPC_HOST__!${__CORE_RPC_HOST__}!g" mempool-config.json
 sed -i "s!__CORE_RPC_PORT__!${__CORE_RPC_PORT__}!g" mempool-config.json
@@ -243,5 +256,10 @@ sed -i "s!__MAXMIND_GEOLITE2_CITY__!${__MAXMIND_GEOLITE2_CITY__}!g" mempool-conf
 sed -i "s!__MAXMIND_GEOLITE2_ASN__!${__MAXMIND_GEOLITE2_ASN__}!g" mempool-config.json
 sed -i "s!__MAXMIND_GEOIP2_ISP__!${__MAXMIND_GEOIP2_ISP__}!g" mempool-config.json

+# REPLICATION
+sed -i "s!__REPLICATION_ENABLED__!${__REPLICATION_ENABLED__}!g" mempool-config.json
+sed -i "s!__REPLICATION_AUDIT__!${__REPLICATION_AUDIT__}!g" mempool-config.json
+sed -i "s!__REPLICATION_AUDIT_START_HEIGHT__!${__REPLICATION_AUDIT_START_HEIGHT__}!g" mempool-config.json
+sed -i "s!__REPLICATION_SERVERS__!${__REPLICATION_SERVERS__}!g" mempool-config.json

 node /backend/package/index.js
--- a/docker/frontend/entrypoint.sh
+++ b/docker/frontend/entrypoint.sh
@@ -39,7 +39,6 @@ __AUDIT__=${AUDIT:=false}
 __MAINNET_BLOCK_AUDIT_START_HEIGHT__=${MAINNET_BLOCK_AUDIT_START_HEIGHT:=0}
 __TESTNET_BLOCK_AUDIT_START_HEIGHT__=${TESTNET_BLOCK_AUDIT_START_HEIGHT:=0}
 __SIGNET_BLOCK_AUDIT_START_HEIGHT__=${SIGNET_BLOCK_AUDIT_START_HEIGHT:=0}
-__FULL_RBF_ENABLED__=${FULL_RBF_ENABLED:=false}
 __HISTORICAL_PRICE__=${HISTORICAL_PRICE:=true}

 # Export as environment variables to be used by envsubst
@@ -66,7 +65,6 @@ export __AUDIT__
 export __MAINNET_BLOCK_AUDIT_START_HEIGHT__
 export __TESTNET_BLOCK_AUDIT_START_HEIGHT__
 export __SIGNET_BLOCK_AUDIT_START_HEIGHT__
-export __FULL_RBF_ENABLED__
 export __HISTORICAL_PRICE__

 folder=$(find /var/www/mempool -name "config.js" | xargs dirname)
--- a/frontend/.browserslistrc
+++ b/frontend/.browserslistrc
@@ -2,11 +2,15 @@
 # For additional information regarding the format and rule options, please see:
 # https://github.com/browserslist/browserslist#queries

+# For the full list of supported browsers by the Angular framework, please see:
+# https://angular.io/guide/browser-support
+
 # You can see what browsers were selected by your queries by running:
 #   npx browserslist

-> 0.5%
-last 2 versions
+last 2 Chrome versions
+last 1 Firefox version
+last 2 Edge major versions
+last 2 Safari major versions
+last 2 iOS major versions
 Firefox ESR
-not dead
-not IE 9-11 # For IE 9-11 support, remove 'not'.
--- a/frontend/README.md
+++ b/frontend/README.md
@@ -17,7 +17,7 @@ Get the latest Mempool code:

 ```
 git clone https://github.com/mempool/mempool
-cd mempool
+cd mempool/frontend
 ```

 ### 2. Specify Website
--- a/frontend/mempool-frontend-config.sample.json
+++ b/frontend/mempool-frontend-config.sample.json
@@ -22,6 +22,5 @@
  "TESTNET_BLOCK_AUDIT_START_HEIGHT": 0,
  "SIGNET_BLOCK_AUDIT_START_HEIGHT": 0,
  "LIGHTNING": false,
-  "FULL_RBF_ENABLED": false,
  "HISTORICAL_PRICE": true
 }
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -1,6 +1,6 @@
 {
  "name": "mempool-frontend",
-  "version": "2.6.0-dev",
+  "version": "3.0.0-dev",
  "description": "Bitcoin mempool visualizer and blockchain explorer backend",
  "license": "GNU Affero General Public License v3.0",
  "homepage": "https://mempool.space",
@@ -61,62 +61,62 @@
    "cypress:run:ci:staging": "node update-config.js TESTNET_ENABLED=true SIGNET_ENABLED=true LIQUID_ENABLED=true BISQ_ENABLED=true ITEMS_PER_PAGE=25 && npm run generate-config && start-server-and-test serve:local-staging 4200 cypress:run:record"
  },
  "dependencies": {
-    "@angular-devkit/build-angular": "^14.2.10",
-    "@angular/animations": "^14.2.12",
-    "@angular/cli": "^14.2.10",
-    "@angular/common": "^14.2.12",
-    "@angular/compiler": "^14.2.12",
-    "@angular/core": "^14.2.12",
-    "@angular/forms": "^14.2.12",
-    "@angular/localize": "^14.2.12",
-    "@angular/platform-browser": "^14.2.12",
-    "@angular/platform-browser-dynamic": "^14.2.12",
-    "@angular/platform-server": "^14.2.12",
-    "@angular/router": "^14.2.12",
-    "@fortawesome/angular-fontawesome": "~0.11.1",
-    "@fortawesome/fontawesome-common-types": "~6.2.1",
-    "@fortawesome/fontawesome-svg-core": "~6.2.1",
-    "@fortawesome/free-solid-svg-icons": "~6.2.1",
+    "@angular-devkit/build-angular": "^16.1.4",
+    "@angular/animations": "^16.1.5",
+    "@angular/cli": "^16.1.4",
+    "@angular/common": "^16.1.5",
+    "@angular/compiler": "^16.1.5",
+    "@angular/core": "^16.1.5",
+    "@angular/forms": "^16.1.5",
+    "@angular/localize": "^16.1.5",
+    "@angular/platform-browser": "^16.1.5",
+    "@angular/platform-browser-dynamic": "^16.1.5",
+    "@angular/platform-server": "^16.1.5",
+    "@angular/router": "^16.1.5",
+    "@fortawesome/angular-fontawesome": "~0.13.0",
+    "@fortawesome/fontawesome-common-types": "~6.4.0",
+    "@fortawesome/fontawesome-svg-core": "~6.4.0",
+    "@fortawesome/free-solid-svg-icons": "~6.4.0",
    "@mempool/mempool.js": "2.3.0",
-    "@ng-bootstrap/ng-bootstrap": "^13.1.1",
+    "@ng-bootstrap/ng-bootstrap": "^15.1.0",
    "@types/qrcode": "~1.5.0",
-    "bootstrap": "~4.6.1",
+    "bootstrap": "~4.6.2",
    "browserify": "^17.0.0",
    "clipboard": "^2.0.11",
    "domino": "^2.1.6",
-    "echarts": "~5.4.1",
+    "echarts": "~5.4.3",
    "echarts-gl": "^2.0.9",
    "lightweight-charts": "~3.8.0",
-    "ngx-echarts": "~14.0.0",
-    "ngx-infinite-scroll": "^14.0.1",
+    "ngx-echarts": "~16.0.0",
+    "ngx-infinite-scroll": "^16.0.0",
    "qrcode": "1.5.1",
-    "rxjs": "~7.8.0",
-    "tinyify": "^3.1.0",
+    "rxjs": "~7.8.1",
+    "tinyify": "^4.0.0",
    "tlite": "^0.1.9",
-    "tslib": "~2.4.1",
-    "zone.js": "~0.12.0"
+    "tslib": "~2.6.0",
+    "zone.js": "~0.13.1"
  },
  "devDependencies": {
-    "@angular/compiler-cli": "^14.2.12",
-    "@angular/language-service": "^14.2.12",
+    "@angular/compiler-cli": "^16.1.5",
+    "@angular/language-service": "^16.1.5",
    "@types/node": "^18.11.9",
    "@typescript-eslint/eslint-plugin": "^5.48.1",
    "@typescript-eslint/parser": "^5.48.1",
    "eslint": "^8.31.0",
    "http-proxy-middleware": "~2.0.6",
-    "prettier": "^2.8.2",
+    "prettier": "^3.0.0",
    "ts-node": "~10.9.1",
-    "typescript": "~4.6.4"
+    "typescript": "~4.9.3"
  },
  "optionalDependencies": {
-    "@cypress/schematic": "^2.4.0",
-    "cypress": "^12.7.0",
-    "cypress-fail-on-console-error": "~4.0.2",
+    "@cypress/schematic": "^2.5.0",
+    "cypress": "^12.17.1",
+    "cypress-fail-on-console-error": "~4.0.3",
    "cypress-wait-until": "^1.7.2",
-    "mock-socket": "~9.1.5",
-    "start-server-and-test": "~1.14.0"
+    "mock-socket": "~9.2.1",
+    "start-server-and-test": "~2.0.0"
  },
  "scarfSettings": {
    "enabled": false
  }
-}
+}
--- a/frontend/src/app/app-routing.module.ts
+++ b/frontend/src/app/app-routing.module.ts
@@ -22,6 +22,7 @@ import { AssetsFeaturedComponent } from './components/assets/assets-featured/ass
 import { AssetsComponent } from './components/assets/assets.component';
 import { AssetComponent } from './components/asset/asset.component';
 import { AssetsNavComponent } from './components/assets/assets-nav/assets-nav.component';
+import { CalculatorComponent } from './components/calculator/calculator.component';

 const browserWindow = window || {};
 // @ts-ignore
@@ -278,6 +279,10 @@ let routes: Routes = [
        path: 'rbf',
        component: RbfList,
      },
+      {
+        path: 'tools/calculator',
+        component: CalculatorComponent
+      },
      {
        path: 'terms-of-service',
        component: TermsOfServiceComponent
--- a/frontend/src/app/app.module.ts
+++ b/frontend/src/app/app.module.ts
@@ -1,4 +1,4 @@
-import { BrowserModule, BrowserTransferStateModule } from '@angular/platform-browser';
+import { BrowserModule } from '@angular/platform-browser';
 import { ModuleWithProviders, NgModule } from '@angular/core';
 import { HttpClientModule, HTTP_INTERCEPTORS } from '@angular/common/http';
 import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
@@ -48,8 +48,7 @@ const providers = [
    AppComponent,
  ],
  imports: [
-    BrowserModule.withServerTransition({ appId: 'serverApp' }),
-    BrowserTransferStateModule,
+    BrowserModule,
    AppRoutingModule,
    HttpClientModule,
    BrowserAnimationsModule,
--- a/frontend/src/app/bisq/bisq-transaction/bisq-transaction.component.html
+++ b/frontend/src/app/bisq/bisq-transaction/bisq-transaction.component.html
@@ -64,9 +64,10 @@
                    {{ bisqTx.burntFee / 100 | number: '1.2-2' }} <span class="symbol">BSQ</span> <span class="fiat"><app-bsq-amount [bsq]="bisqTx.burntFee" [forceFiat]="true" [green]="true"></app-bsq-amount></span>
                </tr>
                <tr>
-                  <td i18n="transaction.fee-per-vbyte|Transaction fee">Fee per vByte</td>
+                  <td *only-vsize i18n="transaction.fee-per-vbyte|Transaction fee">Fee per vByte</td>
+                  <td *only-weight i18n="transaction.fee-per-wu|Transaction fee">Fee per weight unit</td>
                  <td *ngIf="!isLoadingTx; else loadingTxFee">
-                    {{ tx.fee / (tx.weight / 4) | feeRounding }} <span class="symbol">sat/vB</span>
+                    <app-fee-rate [fee]="tx.fee" [weight]="tx.weight"></app-fee-rate>
                    &nbsp;
                    <app-tx-fee-rating [tx]="tx"></app-tx-fee-rating>
                  </td>
--- a/frontend/src/app/bisq/bisq-transaction/bisq-transaction.component.ts
+++ b/frontend/src/app/bisq/bisq-transaction/bisq-transaction.component.ts
@@ -112,7 +112,7 @@ export class BisqTransactionComponent implements OnInit, OnDestroy {
      this.error = error;
    });

-    this.latestBlock$ = this.stateService.blocks$.pipe(map((([block]) => block)));
+    this.latestBlock$ = this.stateService.blocks$.pipe(map((blocks) => blocks[0]));

    this.stateService.bsqPrice$
      .subscribe((bsqPrice) => {
--- a/frontend/src/app/bisq/bisq-transfers/bisq-transfers.component.ts
+++ b/frontend/src/app/bisq/bisq-transfers/bisq-transfers.component.ts
@@ -27,7 +27,7 @@ export class BisqTransfersComponent implements OnInit, OnChanges {
  }

  ngOnInit() {
-    this.latestBlock$ = this.stateService.blocks$.pipe(map(([block]) => block));
+    this.latestBlock$ = this.stateService.blocks$.pipe(map((blocks) => blocks[0]));
  }

  ngOnChanges() {
--- a/frontend/src/app/bitcoin.utils.ts
+++ b/frontend/src/app/bitcoin.utils.ts
@@ -281,3 +281,15 @@ export function isFeatureActive(network: string, height: number, feature: 'rbf'
    return false;
  }
 }
+
+export async function calcScriptHash$(script: string): Promise<string> {
+  if (!/^[0-9a-fA-F]*$/.test(script) || script.length % 2 !== 0) {
+    throw new Error('script is not a valid hex string');
+  }
+  const buf = Uint8Array.from(script.match(/.{2}/g).map((byte) => parseInt(byte, 16)));
+  const hashBuffer = await crypto.subtle.digest('SHA-256', buf);
+  const hashArray = Array.from(new Uint8Array(hashBuffer));
+  return hashArray
+    .map((bytes) => bytes.toString(16).padStart(2, '0'))
+    .join('');
+}
--- a/frontend/src/app/components/address/address-preview.component.html
+++ b/frontend/src/app/components/address/address-preview.component.html
@@ -3,7 +3,7 @@
    <span i18n="shared.address">Address</span>
  </app-preview-title>
  <div class="row">
-    <div class="col-md">
+    <div class="col-md table-col">
      <div class="row d-flex justify-content-between">
        <div class="title-wrapper">
          <h1 class="title"><app-truncate [text]="addressString"></app-truncate></h1>
--- a/frontend/src/app/components/address/address-preview.component.scss
+++ b/frontend/src/app/components/address/address-preview.component.scss
@@ -20,6 +20,11 @@
  margin-right: 15px;
 }

+.table-col {
+  max-width: calc(100% - 470px);
+  overflow: hidden;
+}
+
 .table {
  font-size: 32px;
  margin-top: 48px;
--- a/frontend/src/app/components/address/address-preview.component.ts
+++ b/frontend/src/app/components/address/address-preview.component.ts
@@ -64,13 +64,15 @@ export class AddressPreviewComponent implements OnInit, OnDestroy {
          this.address = null;
          this.addressInfo = null;
          this.addressString = params.get('id') || '';
-          if (/^[A-Z]{2,5}1[AC-HJ-NP-Z02-9]{8,100}$/.test(this.addressString)) {
+          if (/^[A-Z]{2,5}1[AC-HJ-NP-Z02-9]{8,100}|[A-F0-9]{130}$/.test(this.addressString)) {
            this.addressString = this.addressString.toLowerCase();
          }
          this.seoService.setTitle($localize`:@@address.component.browser-title:Address: ${this.addressString}:INTERPOLATION:`);

-          return this.electrsApiService.getAddress$(this.addressString)
-            .pipe(
+          return (this.addressString.match(/[a-f0-9]{130}/)
+              ? this.electrsApiService.getPubKeyAddress$(this.addressString)
+              : this.electrsApiService.getAddress$(this.addressString)
+            ).pipe(
              catchError((err) => {
                this.isLoadingAddress = false;
                this.error = err;
--- a/frontend/src/app/components/address/address.component.scss
+++ b/frontend/src/app/components/address/address.component.scss
@@ -81,6 +81,7 @@ h1 {
    top: 11px;
 	}
  @media (min-width: 768px) {
+    max-width: calc(100% - 180px);
    top: 17px;
  }
 }
--- a/frontend/src/app/components/address/address.component.ts
+++ b/frontend/src/app/components/address/address.component.ts
@@ -2,7 +2,7 @@ import { Component, OnInit, OnDestroy } from '@angular/core';
 import { ActivatedRoute, ParamMap } from '@angular/router';
 import { ElectrsApiService } from '../../services/electrs-api.service';
 import { switchMap, filter, catchError, map, tap } from 'rxjs/operators';
-import { Address, Transaction } from '../../interfaces/electrs.interface';
+import { Address, ScriptHash, Transaction } from '../../interfaces/electrs.interface';
 import { WebsocketService } from '../../services/websocket.service';
 import { StateService } from '../../services/state.service';
 import { AudioService } from '../../services/audio.service';
@@ -72,7 +72,7 @@ export class AddressComponent implements OnInit, OnDestroy {
          this.addressInfo = null;
          document.body.scrollTo(0, 0);
          this.addressString = params.get('id') || '';
-          if (/^[A-Z]{2,5}1[AC-HJ-NP-Z02-9]{8,100}$/.test(this.addressString)) {
+          if (/^[A-Z]{2,5}1[AC-HJ-NP-Z02-9]{8,100}|[A-F0-9]{130}$/.test(this.addressString)) {
            this.addressString = this.addressString.toLowerCase();
          }
          this.seoService.setTitle($localize`:@@address.component.browser-title:Address: ${this.addressString}:INTERPOLATION:`);
@@ -83,8 +83,11 @@ export class AddressComponent implements OnInit, OnDestroy {
              .pipe(filter((state) => state === 2 && this.transactions && this.transactions.length > 0))
          )
          .pipe(
-            switchMap(() => this.electrsApiService.getAddress$(this.addressString)
-              .pipe(
+            switchMap(() => (
+              this.addressString.match(/[a-f0-9]{130}/)
+              ? this.electrsApiService.getPubKeyAddress$(this.addressString)
+              : this.electrsApiService.getAddress$(this.addressString)
+            ).pipe(
                catchError((err) => {
                  this.isLoadingAddress = false;
                  this.error = err;
@@ -114,7 +117,9 @@ export class AddressComponent implements OnInit, OnDestroy {
          this.updateChainStats();
          this.isLoadingAddress = false;
          this.isLoadingTransactions = true;
-          return this.electrsApiService.getAddressTransactions$(address.address);
+          return address.is_pubkey
+              ? this.electrsApiService.getScriptHashTransactions$('41' + address.address + 'ac')
+              : this.electrsApiService.getAddressTransactions$(address.address);
        }),
        switchMap((transactions) => {
          this.tempTransactions = transactions;
@@ -207,7 +212,7 @@ export class AddressComponent implements OnInit, OnDestroy {
    }
    this.isLoadingTransactions = true;
    this.retryLoadMore = false;
-    this.electrsApiService.getAddressTransactionsFromHash$(this.address.address, this.lastTransactionTxId)
+    this.electrsApiService.getAddressTransactions$(this.address.address, this.lastTransactionTxId)
      .subscribe((transactions: Transaction[]) => {
        this.lastTransactionTxId = transactions[transactions.length - 1].txid;
        this.loadedConfirmedTxCount += transactions.length;
@@ -217,6 +222,10 @@ export class AddressComponent implements OnInit, OnDestroy {
      (error) => {
        this.isLoadingTransactions = false;
        this.retryLoadMore = true;
+        // In the unlikely event of the txid wasn't found in the mempool anymore and we must reload the page.
+        if (error.status === 422) {
+          window.location.reload();
+        }
      });
  }

--- a/frontend/src/app/components/bisq-master-page/bisq-master-page.component.html
+++ b/frontend/src/app/components/bisq-master-page/bisq-master-page.component.html
@@ -40,8 +40,8 @@
  </a>

  <div ngbDropdown (window:resize)="onResize($event)" class="dropdown-container" *ngIf="env.TESTNET_ENABLED || env.SIGNET_ENABLED || env.LIQUID_ENABLED || env.BISQ_ENABLED || env.LIQUID_TESTNET_ENABLED">
-    <button ngbDropdownToggle type="button" class="btn btn-secondary dropdown-toggle-split" aria-haspopup="true">
-      <app-svg-images name="bisq" width="20" height="20" viewBox="0 0 75 75" style="width: 25px; height: 25px;" class="mainnet mr-1"></app-svg-images>
+    <button ngbDropdownToggle type="button" class="btn btn-secondary dropdown-toggle-split d-flex justify-content-center align-items-center" aria-haspopup="true">
+      <app-svg-images class="d-flex justify-content-center align-items-center current-network-svg" name="bisq" width="20" height="20" viewBox="0 0 80 80"></app-svg-images>
    </button>
    <div ngbDropdownMenu [ngClass]="{'dropdown-menu-right' : isMobile}">
      <a [href]="env.MEMPOOL_WEBSITE_URL + urlLanguage + (networkPaths['mainnet'] || '/')" ngbDropdownItem class="mainnet"><app-svg-images name="bitcoin" width="22" height="22" viewBox="0 0 65 65" style="width: 25px; height: 25px;" class="mainnet mr-1"></app-svg-images> Mainnet</a>
--- a/frontend/src/app/components/bisq-master-page/bisq-master-page.component.scss
+++ b/frontend/src/app/components/bisq-master-page/bisq-master-page.component.scss
@@ -147,3 +147,18 @@ nav {
 .navbar-brand {
  margin-right: 5px;
 }
+
+.current-network-svg {
+  width: 20px;
+  height: 20px;
+  margin-right: 5px;
+}
+
+:host-context(.rtl-layout) {
+  .current-network-svg {
+    width: 20px;
+    height: 20px;
+    margin-left: 5px;
+    margin-right: 0px;
+  }
+}
--- a/frontend/src/app/components/block-fee-rates-graph/block-fee-rates-graph.component.ts
+++ b/frontend/src/app/components/block-fee-rates-graph/block-fee-rates-graph.component.ts
@@ -1,6 +1,6 @@
 import { ChangeDetectionStrategy, Component, Inject, Input, LOCALE_ID, NgZone, OnInit } from '@angular/core';
 import { EChartsOption } from 'echarts';
-import { Observable } from 'rxjs';
+import { Observable, Subscription, combineLatest } from 'rxjs';
 import { map, share, startWith, switchMap, tap } from 'rxjs/operators';
 import { ApiService } from '../../services/api.service';
 import { SeoService } from '../../services/seo.service';
@@ -76,10 +76,11 @@ export class BlockFeeRatesGraphComponent implements OnInit {
        }
      });

-    this.statsObservable$ = this.radioGroupForm.get('dateSpan').valueChanges
-      .pipe(
-        startWith(this.radioGroupForm.controls.dateSpan.value),
-        switchMap((timespan) => {
+    this.statsObservable$ = combineLatest([
+        this.radioGroupForm.get('dateSpan').valueChanges.pipe(startWith(this.radioGroupForm.controls.dateSpan.value)),
+        this.stateService.rateUnits$
+    ]).pipe(
+        switchMap(([timespan, rateUnits]) => {
          this.storageService.setValue('miningWindowPreference', timespan);
          this.timespan = timespan;
          this.isLoading = true;
@@ -135,8 +136,8 @@ export class BlockFeeRatesGraphComponent implements OnInit {

                this.prepareChartOptions({
                  legends: legends,
-                  series: series,
-                });
+                  series: series
+                }, rateUnits === 'wu');
                this.isLoading = false;
              }),
              map((response) => {
@@ -150,7 +151,7 @@ export class BlockFeeRatesGraphComponent implements OnInit {
      );
  }

-  prepareChartOptions(data) {
+  prepareChartOptions(data, weightMode) {
    this.chartOptions = {
      color: ['#D81B60', '#8E24AA', '#1E88E5', '#7CB342', '#FDD835', '#6D4C41', '#546E7A'],
      animation: false,
@@ -181,7 +182,11 @@ export class BlockFeeRatesGraphComponent implements OnInit {
          let tooltip = `<b style="color: white; margin-left: 2px">${formatterXAxis(this.locale, this.timespan, parseInt(data[0].axisValue, 10))}</b><br>`;

          for (const rate of data.reverse()) {
-            tooltip += `${rate.marker} ${rate.seriesName}: ${rate.data[1]} sats/vByte<br>`;
+            if (weightMode) {
+              tooltip += `${rate.marker} ${rate.seriesName}: ${rate.data[1] / 4} sats/WU<br>`;
+            } else {
+              tooltip += `${rate.marker} ${rate.seriesName}: ${rate.data[1]} sats/vByte<br>`;
+            }
          }

          if (['24h', '3d'].includes(this.timespan)) {
@@ -231,9 +236,12 @@ export class BlockFeeRatesGraphComponent implements OnInit {
        axisLabel: {
          color: 'rgb(110, 112, 121)',
          formatter: (val) => {
+            if (weightMode) {
+              val /= 4;
+            }
            const selectedPowerOfTen: any = selectPowerOfTen(val);
            const newVal = Math.round(val / selectedPowerOfTen.divider);
-            return `${newVal}${selectedPowerOfTen.unit} s/vB`;
+            return `${newVal}${selectedPowerOfTen.unit} s/${weightMode ? 'WU': 'vB'}`;
          },
        },
        splitLine: {
--- a/frontend/src/app/components/block-overview-graph/block-overview-graph.component.html
+++ b/frontend/src/app/components/block-overview-graph/block-overview-graph.component.html
@@ -1,15 +1,17 @@
-<div class="block-overview-graph">
-  <canvas class="block-overview-canvas" [class.clickable]="!!hoverTx" #blockCanvas></canvas>
-  <div class="loader-wrapper" [class.hidden]="(!isLoading || disableSpinner) && !unavailable">
-    <div *ngIf="isLoading" class="spinner-border ml-3 loading" role="status"></div>
-    <div *ngIf="!isLoading && unavailable" class="ml-3" i18n="block.not-available">not available</div>
-  </div>

-  <app-block-overview-tooltip
-    [tx]="selectedTx || hoverTx"
-    [cursorPosition]="tooltipPosition"
-    [clickable]="!!selectedTx"
-    [auditEnabled]="auditHighlighting"
-    [blockConversion]="blockConversion"
-  ></app-block-overview-tooltip>
+<div class="grid-align" [style.gridTemplateColumns]="'repeat(auto-fit, ' + resolution + 'px)'">
+  <div class="block-overview-graph">
+    <canvas class="block-overview-canvas" [class.clickable]="!!hoverTx" #blockCanvas></canvas>
+    <div class="loader-wrapper" [class.hidden]="(!isLoading || disableSpinner) && !unavailable">
+      <div *ngIf="isLoading" class="spinner-border ml-3 loading" role="status"></div>
+      <div *ngIf="!isLoading && unavailable" class="ml-3" i18n="block.not-available">not available</div>
+    </div>
+    <app-block-overview-tooltip
+      [tx]="selectedTx || hoverTx"
+      [cursorPosition]="tooltipPosition"
+      [clickable]="!!selectedTx"
+      [auditEnabled]="auditHighlighting"
+      [blockConversion]="blockConversion"
+    ></app-block-overview-tooltip>
+  </div>
 </div>
--- a/frontend/src/app/components/block-overview-graph/block-overview-graph.component.scss
+++ b/frontend/src/app/components/block-overview-graph/block-overview-graph.component.scss
@@ -6,8 +6,16 @@
  display: flex;
  justify-content: center;
  align-items: center;
+  grid-column: 1/-1;
 }

+.grid-align {
+  position: relative;
+  width: 100%;
+  display: grid;
+  grid-template-columns: repeat(auto-fit, 75px);
+  justify-content: center;
+}

 .block-overview-canvas {
  position: absolute;
--- a/frontend/src/app/components/block-overview-graph/block-overview-graph.component.ts
+++ b/frontend/src/app/components/block-overview-graph/block-overview-graph.component.ts
@@ -6,6 +6,8 @@ import TxSprite from './tx-sprite';
 import TxView from './tx-view';
 import { Position } from './sprite-types';
 import { Price } from '../../services/price.service';
+import { StateService } from '../../services/state.service';
+import { Subscription } from 'rxjs';

@Component({
  selector: 'app-block-overview-graph',
@@ -23,7 +25,6 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
  @Input() unavailable: boolean = false;
  @Input() auditHighlighting: boolean = false;
  @Input() blockConversion: Price;
-  @Input() pixelAlign: boolean = false;
  @Output() txClickEvent = new EventEmitter<{ tx: TransactionStripped, keyModifier: boolean}>();
  @Output() txHoverEvent = new EventEmitter<string>();
  @Output() readyEvent = new EventEmitter();
@@ -44,16 +45,25 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
  scene: BlockScene;
  hoverTx: TxView | void;
  selectedTx: TxView | void;
+  highlightTx: TxView | void;
  mirrorTx: TxView | void;
  tooltipPosition: Position;

  readyNextFrame = false;

+  searchText: string;
+  searchSubscription: Subscription;
+
  constructor(
    readonly ngZone: NgZone,
    readonly elRef: ElementRef,
+    private stateService: StateService,
  ) {
    this.vertexArray = new FastVertexArray(512, TxSprite.dataSize);
+    this.searchSubscription = this.stateService.searchText$.subscribe((text) => {
+      this.searchText = text;
+      this.updateSearchHighlight();
+    });
  }

  ngAfterViewInit(): void {
@@ -109,6 +119,7 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
      this.scene.setup(transactions);
      this.readyNextFrame = true;
      this.start();
+      this.updateSearchHighlight();
    }
  }

@@ -116,6 +127,7 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
    if (this.scene) {
      this.scene.enter(transactions, direction);
      this.start();
+      this.updateSearchHighlight();
    }
  }

@@ -123,6 +135,7 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
    if (this.scene) {
      this.scene.exit(direction);
      this.start();
+      this.updateSearchHighlight();
    }
  }

@@ -130,6 +143,7 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
    if (this.scene) {
      this.scene.replace(transactions || [], direction, sort);
      this.start();
+      this.updateSearchHighlight();
    }
  }

@@ -137,6 +151,7 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
    if (this.scene) {
      this.scene.update(add, remove, change, direction, resetLayout);
      this.start();
+      this.updateSearchHighlight();
    }
  }

@@ -203,7 +218,7 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
    } else {
      this.scene = new BlockScene({ width: this.displayWidth, height: this.displayHeight, resolution: this.resolution,
        blockLimit: this.blockLimit, orientation: this.orientation, flip: this.flip, vertexArray: this.vertexArray,
-        highlighting: this.auditHighlighting, pixelAlign: this.pixelAlign });
+        highlighting: this.auditHighlighting });
      this.start();
    }
  }
@@ -406,6 +421,19 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
    }
  }

+  updateSearchHighlight(): void {
+    if (this.highlightTx && this.highlightTx.txid !== this.searchText && this.scene) {
+      this.scene.setHighlight(this.highlightTx, false);
+      this.start();
+    } else if (this.scene?.txs && this.searchText && this.searchText.length === 64) {
+      this.highlightTx = this.scene.txs[this.searchText];
+      if (this.highlightTx) {
+        this.scene.setHighlight(this.highlightTx, true);
+        this.start();
+      }
+    }
+  }
+
  setHighlightingEnabled(enabled: boolean): void {
    if (this.scene) {
      this.scene.setHighlighting(enabled);
--- a/frontend/src/app/components/block-overview-graph/block-scene.ts
+++ b/frontend/src/app/components/block-overview-graph/block-scene.ts
@@ -15,7 +15,6 @@ export default class BlockScene {
  gridWidth: number;
  gridHeight: number;
  gridSize: number;
-  pixelAlign: boolean;
  vbytesPerUnit: number;
  unitPadding: number;
  unitWidth: number;
@@ -24,24 +23,19 @@ export default class BlockScene {
  animateUntil = 0;
  dirty: boolean;

-  constructor({ width, height, resolution, blockLimit, orientation, flip, vertexArray, highlighting, pixelAlign }:
+  constructor({ width, height, resolution, blockLimit, orientation, flip, vertexArray, highlighting }:
      { width: number, height: number, resolution: number, blockLimit: number,
-        orientation: string, flip: boolean, vertexArray: FastVertexArray, highlighting: boolean, pixelAlign: boolean }
+        orientation: string, flip: boolean, vertexArray: FastVertexArray, highlighting: boolean }
  ) {
-    this.init({ width, height, resolution, blockLimit, orientation, flip, vertexArray, highlighting, pixelAlign });
+    this.init({ width, height, resolution, blockLimit, orientation, flip, vertexArray, highlighting });
  }

  resize({ width = this.width, height = this.height, animate = true }: { width?: number, height?: number, animate: boolean }): void {
    this.width = width;
    this.height = height;
    this.gridSize = this.width / this.gridWidth;
-    if (this.pixelAlign) {
-      this.unitPadding =  Math.max(1, Math.floor(this.gridSize / 2.5));
-      this.unitWidth = this.gridSize - (this.unitPadding);
-    } else {
-      this.unitPadding =  width / 500;
-      this.unitWidth = this.gridSize - (this.unitPadding * 2);
-    }
+    this.unitPadding =  Math.max(1, Math.floor(this.gridSize / 5));
+    this.unitWidth = this.gridSize - (this.unitPadding * 2);

    this.dirty = true;
    if (this.initialised && this.scene) {
@@ -215,15 +209,18 @@ export default class BlockScene {
    this.animateUntil = Math.max(this.animateUntil, tx.setHover(value));
  }

-  private init({ width, height, resolution, blockLimit, orientation, flip, vertexArray, highlighting, pixelAlign }:
+  setHighlight(tx: TxView, value: boolean): void {
+    this.animateUntil = Math.max(this.animateUntil, tx.setHighlight(value));
+  }
+
+  private init({ width, height, resolution, blockLimit, orientation, flip, vertexArray, highlighting }:
      { width: number, height: number, resolution: number, blockLimit: number,
-        orientation: string, flip: boolean, vertexArray: FastVertexArray, highlighting: boolean, pixelAlign: boolean }
+        orientation: string, flip: boolean, vertexArray: FastVertexArray, highlighting: boolean }
  ): void {
    this.orientation = orientation;
    this.flip = flip;
    this.vertexArray = vertexArray;
    this.highlightingEnabled = highlighting;
-    this.pixelAlign = pixelAlign;

    this.scene = {
      count: 0,
@@ -349,12 +346,7 @@ export default class BlockScene {
  private gridToScreen(position: Square | void): Square {
    if (position) {
      const slotSize = (position.s * this.gridSize);
-      let squareSize;
-      if (this.pixelAlign) {
-        squareSize = slotSize - (this.unitPadding);
-      } else {
-        squareSize = slotSize - (this.unitPadding * 2);
-      }
+      const squareSize = slotSize - (this.unitPadding * 2);

      // The grid is laid out notionally left-to-right, bottom-to-top,
      // so we rotate and/or flip the y axis to match the target configuration.
@@ -430,7 +422,7 @@ export default class BlockScene {

  // calculates and returns the size of the tx in multiples of the grid size
  private txSize(tx: TxView): number {
-    const scale = Math.max(1, Math.round(Math.sqrt(tx.vsize / this.vbytesPerUnit)));
+    const scale = Math.max(1, Math.round(Math.sqrt(1.1 * tx.vsize / this.vbytesPerUnit)));
    return Math.min(this.gridWidth, Math.max(1, scale)); // bound between 1 and the max displayable size (just in case!)
  }

--- a/Show More
+++ b/Show More