Merge branch 'master' into knorrium/update_node_matrix

.github/dependabot.yml

@@ -16,6 +16,20 @@ updates:
   - package-ecosystem: npm
     directory: "/frontend"
     versioning-strategy: increase
+    groups:
+      frontend-angular-dependencies:
+        patterns:
+          - "@angular*"
+          - "@ng-*"
+          - "ngx-*"
+      frontend-jest-dependencies:
+        patterns:
+          - "@types/jest"
+          - "jest"
+      frontend-eslint-dependencies:
+        patterns:
+          - "@typescript-eslint*"
+          - "eslint"
     schedule:
       interval: daily
     open-pull-requests-limit: 10

.github/workflows/ci.yml

@@ -27,8 +27,17 @@ 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: Read rust-toolchain file from repository
+        id: gettoolchain
+        run: echo "::set-output name=toolchain::$(cat rust-toolchain)"
+        working-directory: ${{ matrix.node }}/${{ matrix.flavor }}
+
+      - name: Install ${{ steps.gettoolchain.outputs.toolchain }} Rust toolchain
+        # Latest version available on this commit is 1.71.1
+        # Commit date is Aug 3, 2023
+        uses: dtolnay/rust-toolchain@f361669954a8ecfc00a3443f35f9ac8e610ffc06
+        with:
+          toolchain: ${{ steps.gettoolchain.outputs.toolchain }}
 
       - name: Install
         if: ${{ matrix.flavor == 'dev'}}

.github/workflows/get_backend_hash.yml

@@ -0,0 +1,19 @@
+name: 'Print backend hashes'
+
+on: [workflow_dispatch]
+
+jobs:
+  print-backend-sha:
+    runs-on: 'ubuntu-latest'
+    name: Print backend hashes
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          path: repo
+
+      - name: Run script
+        working-directory: repo
+        run: |
+          chmod +x ./scripts/get_backend_hash.sh
+          sh ./scripts/get_backend_hash.sh

.github/workflows/on-tag.yml

@@ -68,17 +68,17 @@ jobs:
         run: echo "${{ secrets.DOCKER_PASSWORD }}" | docker login -u "${{ secrets.DOCKER_USERNAME }}" --password-stdin
 
       - name: Checkout project
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Init repo for Dockerization
         run: docker/init.sh "$TAG"
 
       - name: Set up QEMU
-        uses: docker/setup-qemu-action@v2
+        uses: docker/setup-qemu-action@v3
         id: qemu
 
       - name: Setup Docker buildx action
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v3
         id: buildx
 
       - name: Available platforms
@@ -98,7 +98,7 @@ jobs:
           docker buildx build \
           --cache-from "type=local,src=/tmp/.buildx-cache" \
           --cache-to "type=local,dest=/tmp/.buildx-cache" \
-          --platform linux/amd64,linux/arm64,linux/arm/v7 \
+          --platform linux/amd64,linux/arm64 \
           --tag ${{ secrets.DOCKER_HUB_USER }}/${{ matrix.service }}:$TAG \
           --tag ${{ secrets.DOCKER_HUB_USER }}/${{ matrix.service }}:latest \
           --output "type=registry" ./${{ matrix.service }}/ \

GNUmakefile

@@ -1,47 +0,0 @@
-# If you see pwd_unknown showing up check permissions
-PWD ?= pwd_unknown
-
-# DATABASE DEPLOY FOLDER CONFIG - default ./data
-ifeq ($(data),)
-DATA := data
-export DATA
-else
-DATA := $(data)
-export DATA
-endif
-
-.PHONY: help
-help:
-	@echo ''
-	@echo ''
-	@echo '	Usage: make [COMMAND]'
-	@echo ''
-	@echo '		make all		# build init mempool and electrs'
-	@echo '		make init		# setup some useful configs'
-	@echo '		make mempool		# build q dockerized mempool.space'
-	@echo '		make electrs		# build a docker electrs image'
-	@echo ''
-
-.PHONY: init
-init:
-	@echo ''
-	mkdir -p   $(DATA) $(DATA)/mysql $(DATA)/mysql/data 
-	#REF: https://github.com/mempool/mempool/blob/master/docker/README.md
-	cat docker/docker-compose.yml > docker-compose.yml
-	cat backend/mempool-config.sample.json > backend/mempool-config.json
-.PHONY: mempool
-mempool: init
-	@echo ''
-	docker-compose up --force-recreate --always-recreate-deps
-	@echo ''
-.PHONY: electrs
-electrum:
-	#REF: https://hub.docker.com/r/beli/electrum
-	@echo ''
-	docker build -f docker/electrum/Dockerfile .
-	@echo ''
-.PHONY: all
-all: init
-	make mempool
-#######################
--include Makefile

Makefile

@@ -1 +0,0 @@
-# For additional configs/scripting

backend/README.md

@@ -85,7 +85,7 @@ Install dependencies with `npm` and build the backend:
 
 ```
 cd backend
-npm install
+npm install --no-install-links # npm@9.4.2 and later can omit the --no-install-links
 npm run build
 ```
 

backend/package-lock.json

@@ -12,7 +12,7 @@
         "@babel/core": "^7.21.3",
         "@mempool/electrum-client": "1.1.9",
         "@types/node": "^18.15.3",
-        "axios": "~1.4.0",
+        "axios": "~1.5.0",
         "bitcoinjs-lib": "~6.1.3",
         "crypto-js": "~4.1.1",
         "express": "~4.18.2",
@@ -2321,9 +2321,9 @@
       "integrity": "sha512-Oei9OH4tRh0YqU3GxhX79dM/mwVgvbZJaSNaRk+bshkj0S5cfHcgYakreBjrHwatXKbz+IoIdYLxrKim2MjW0Q=="
     },
     "node_modules/axios": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/axios/-/axios-1.4.0.tgz",
-      "integrity": "sha512-S4XCWMEmzvo64T9GfvQDOXgYRDJ/wsSZc7Jvdgx5u1sd0JwsuPLqb3SYmusag+edF6ziyMensPVqLTSc1PiSEA==",
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/axios/-/axios-1.5.0.tgz",
+      "integrity": "sha512-D4DdjDo5CY50Qms0qGQTTw6Q44jl7zRwY7bthds06pUGfChBCTcQs+N743eFWGEd6pRTMd6A+I87aWyFV5wiZQ==",
       "dependencies": {
         "follow-redirects": "^1.15.0",
         "form-data": "^4.0.0",
@@ -9397,9 +9397,9 @@
       "integrity": "sha512-Oei9OH4tRh0YqU3GxhX79dM/mwVgvbZJaSNaRk+bshkj0S5cfHcgYakreBjrHwatXKbz+IoIdYLxrKim2MjW0Q=="
     },
     "axios": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/axios/-/axios-1.4.0.tgz",
-      "integrity": "sha512-S4XCWMEmzvo64T9GfvQDOXgYRDJ/wsSZc7Jvdgx5u1sd0JwsuPLqb3SYmusag+edF6ziyMensPVqLTSc1PiSEA==",
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/axios/-/axios-1.5.0.tgz",
+      "integrity": "sha512-D4DdjDo5CY50Qms0qGQTTw6Q44jl7zRwY7bthds06pUGfChBCTcQs+N743eFWGEd6pRTMd6A+I87aWyFV5wiZQ==",
       "requires": {
         "follow-redirects": "^1.15.0",
         "form-data": "^4.0.0",

backend/package.json

@@ -41,7 +41,7 @@
     "@babel/core": "^7.21.3",
     "@mempool/electrum-client": "1.1.9",
     "@types/node": "^18.15.3",
-    "axios": "~1.4.0",
+    "axios": "~1.5.0",
     "bitcoinjs-lib": "~6.1.3",
     "crypto-js": "~4.1.1",
     "express": "~4.18.2",

backend/rust-gbt/src/gbt.rs

@@ -335,13 +335,15 @@ fn set_relatives(txid: u32, audit_pool: &mut AuditPool) {
     let mut total_sigops: u32 = 0;
 
     for ancestor_id in &ancestors {
-        let Some(ancestor) = audit_pool
+        if 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;
+            .expect("audit_pool contains all ancestors")
+        {
+            total_fee += ancestor.fee;
+            total_sigop_adjusted_weight += ancestor.sigop_adjusted_weight;
+            total_sigop_adjusted_vsize += ancestor.sigop_adjusted_vsize;
+            total_sigops += ancestor.sigops;
+        } else { todo!() };
     }
 
     if let Some(Some(tx)) = audit_pool.get_mut(txid as usize) {

backend/src/__tests__/config.test.ts

@@ -191,30 +191,31 @@ describe('Mempool Backend Config', () => {
             }
             continue;
           }
-          switch (typeof value) {
-            case 'object': {
-              if (Array.isArray(value)) {
-                continue;
-              } else {
-                parseJson(value, key);
-              }
-              break;
-            }
-            default: {
+
+          if (root) {
               //The flattened string, i.e, __MEMPOOL_ENABLED__
               const replaceStr = `${root ? '__' + root + '_' : '__'}${key}__`;
 
               //The string used as the environment variable, i.e, MEMPOOL_ENABLED
               const envVarStr = `${root ? root : ''}_${key}`;
 
+              let defaultEntry;
               //The string used as the default value, to be checked as a regex, i.e, __MEMPOOL_ENABLED__=${MEMPOOL_ENABLED:=(.*)}
-              const defaultEntry = replaceStr + '=' + '\\${' + envVarStr + ':=(.*)' + '}';
-
-              if (process.env.CI) {
-                console.log(`looking for ${defaultEntry} in the start.sh script`);
+              if (Array.isArray(value)) {
+                defaultEntry = `${replaceStr}=\${${envVarStr}:=[]}`;
+                if (process.env.CI) {
+                  console.log(`looking for ${defaultEntry} in the start.sh script`);
+                }
+                //Regex matching does not work with the array values
+                expect(startSh).toContain(defaultEntry);
+              } else {
+                 defaultEntry = replaceStr + '=' + '\\${' + envVarStr + ':=(.*)' + '}';
+                 if (process.env.CI) {
+                  console.log(`looking for ${defaultEntry} in the start.sh script`);
+                }
+                const re = new RegExp(defaultEntry);
+                expect(startSh).toMatch(re);
               }
-              const re = new RegExp(defaultEntry);
-              expect(startSh).toMatch(re);
 
               //The string that actually replaces the values in the config file
               const sedStr = 'sed -i "s!' + replaceStr + '!${' + replaceStr + '}!g" mempool-config.json';
@@ -222,11 +223,13 @@ describe('Mempool Backend Config', () => {
                 console.log(`looking for ${sedStr} in the start.sh script`);
               }
               expect(startSh).toContain(sedStr);
-              break;
             }
+          else {
+            parseJson(value, key);
           }
         }
       }
+
       parseJson(fixture);
     });
   });

backend/src/api/bitcoin/esplora-api.ts

@@ -75,9 +75,9 @@ class FailoverRouter {
 
     const results = await Promise.allSettled(this.hosts.map(async (host) => {
       if (host.socket) {
-        return this.pollConnection.get<number>('/blocks/tip/height', { socketPath: host.host, timeout: 2000 });
+        return this.pollConnection.get<number>('/blocks/tip/height', { socketPath: host.host, timeout: 5000 });
       } else {
-        return this.pollConnection.get<number>(host.host + '/blocks/tip/height', { timeout: 2000 });
+        return this.pollConnection.get<number>(host.host + '/blocks/tip/height', { timeout: 5000 });
       }
     }));
     const maxHeight = results.reduce((max, result) => Math.max(max, result.status === 'fulfilled' ? result.value?.data || 0 : 0), 0);

backend/src/api/difficulty-adjustment.ts

@@ -32,13 +32,13 @@ export interface DifficultyAdjustment {
 export function calcBitsDifference(oldBits: number, newBits: number): number {
   // Must be
   // - integer
-  // - highest exponent is 0x1f, so max value (as integer) is 0x1f0000ff
+  // - highest exponent is 0x20, so max value (as integer) is 0x207fffff
   // - min value is 1 (exponent = 0)
   // - highest bit of the number-part is +- sign, it must not be 1
   const verifyBits = (bits: number): void => {
     if (
       Math.floor(bits) !== bits ||
-      bits > 0x1f0000ff ||
+      bits > 0x207fffff ||
       bits < 1 ||
       (bits & 0x00800000) !== 0 ||
       (bits & 0x007fffff) === 0

backend/src/api/explorer/nodes.routes.ts

@@ -42,6 +42,12 @@ class NodesRoutes {
       switch (config.MEMPOOL.NETWORK) {
         case 'testnet':
           nodesList = [
+            '0259db43b4e4ac0ff12a805f2d81e521253ba2317f6739bc611d8e2fa156d64256',
+            '0352b9944b9a52bd2116c91f1ba70c4ef851ac5ba27e1b20f1d92da3ade010dd10',
+            '03424f5a7601eaa47482cb17100b31a84a04d14fb44b83a57eeceffd8e299878e3',
+            '032850492ee61a5f7006a2fda6925e4b4ec3782f2b6de2ff0e439ef5a38c3b2470',
+            '022c80bace98831c44c32fb69755f2b353434e0ee9e7fbda29507f7ef8abea1421',
+            '02c3559c833e6f99f9ca05fe503e0b4e7524dea9121344edfd3e811101e0c28680',
             '032c7c7819276c4f706a04df1a0f1e10a5495994a7be4c1d3d28ca766e5a2b957b',
             '025a7e38c2834dd843591a4d23d5f09cdeb77ddca85f673c2d944a14220ff14cf7',
             '0395e2731a1673ef21d7a16a727c4fc4d4c35a861c428ce2c819c53d2b81c8bd55',
@@ -64,6 +70,12 @@ class NodesRoutes {
           break;
         case 'signet':
           nodesList = [
+            '029fe3621fc0c6e08056a14b868f8fb9acca1aa28a129512f6cea0f0d7654d9f92',
+            '02f60cd7a3a4f1c953dd9554a6ebd51a34f8b10b8124b7fc43a0b381139b55c883',
+            '03cbbf581774700865eebd1be42d022bc004ba30881274ab304e088a25d70e773d',
+            '0243348cb3741cfe2d8485fa8375c29c7bc7cbb67577c363cb6987a5e5fd0052cc',
+            '02cb73e631af44bee600d80f8488a9194c9dc5c7590e575c421a070d1be05bc8e9',
+            '0306f55ee631aa1e2cd4d9b2bfcbc14404faec5c541cef8b2e6f779061029d09c4',
             '03ddab321b760433cbf561b615ef62ac7d318630c5f51d523aaf5395b90b751956',
             '033d92c7bfd213ef1b34c90e985fb5dc77f9ec2409d391492484e57a44c4aca1de',
             '02ad010dda54253c1eb9efe38b0760657a3b43ecad62198c359c051c9d99d45781',
@@ -86,6 +98,12 @@ class NodesRoutes {
           break;
         default:
           nodesList = [
+            '02b12b889fe3c943cb05645921040ef13d6d397a2e7a4ad000e28500c505ff26d6',
+            '0302240ac9d71b39617cbde2764837ec3d6198bd6074b15b75d2ff33108e89d2e1',
+            '03364a8ace313376e5e4b68c954e287c6388e16df9e9fdbaf0363ecac41105cbf6',
+            '03229ab4b7f692753e094b93df90530150680f86b535b5183b0cffd75b3df583fc',
+            '03a696eb7acde991c1be97a58a9daef416659539ae462b897f5e9ae361f990228e',
+            '0248bf26cf3a63ab8870f34dc0ec9e6c8c6288cdba96ba3f026f34ec0f13ac4055',
             '03fbc17549ec667bccf397ababbcb4cdc0e3394345e4773079ab2774612ec9be61',
             '03da9a8623241ccf95f19cd645c6cecd4019ac91570e976eb0a128bebbc4d8a437',
             '03ca5340cf85cb2e7cf076e489f785410838de174e40be62723e8a60972ad75144',

backend/src/api/mempool-blocks.ts

@@ -451,6 +451,7 @@ class MempoolBlocks {
   private processBlockTemplates(mempool: { [txid: string]: MempoolTransactionExtended }, blocks: string[][], blockWeights: number[] | null, rates: [string, number][], clusters: string[][], accelerations, accelerationPool, saveResults): MempoolBlockWithTransactions[] {
     for (const [txid, rate] of rates) {
       if (txid in mempool) {
+        mempool[txid].cpfpDirty = (rate !== mempool[txid].effectiveFeePerVsize);
         mempool[txid].effectiveFeePerVsize = rate;
         mempool[txid].cpfpChecked = false;
       }
@@ -494,6 +495,9 @@ class MempoolBlocks {
               }
             }
           });
+          if (mempoolTx.ancestors?.length !== ancestors.length || mempoolTx.descendants?.length !== descendants.length) {
+            mempoolTx.cpfpDirty = true;
+          }
           Object.assign(mempoolTx, {ancestors, descendants, bestDescendant: null, cpfpChecked: true});
         }
       }
@@ -531,12 +535,21 @@ class MempoolBlocks {
 
           const acceleration = accelerations[txid];
           if (isAccelerated[txid] || (acceleration && (!accelerationPool || acceleration.pools.includes(accelerationPool)))) {
+            if (!mempoolTx.acceleration) {
+              mempoolTx.cpfpDirty = true;
+            }
             mempoolTx.acceleration = true;
             for (const ancestor of mempoolTx.ancestors || []) {
+              if (!mempool[ancestor.txid].acceleration) {
+                mempool[ancestor.txid].cpfpDirty = true;
+              }
               mempool[ancestor.txid].acceleration = true;
               isAccelerated[ancestor.txid] = true;
             }
           } else {
+            if (mempoolTx.acceleration) {
+              mempoolTx.cpfpDirty = true;
+            }
             delete mempoolTx.acceleration;
           }
 

backend/src/api/statistics/statistics-api.ts

@@ -171,6 +171,7 @@ class StatisticsApi {
   private getQueryForDaysAvg(div: number, interval: string) {
     return `SELECT
       UNIX_TIMESTAMP(added) as added,
+      CAST(avg(unconfirmed_transactions) as DOUBLE) as unconfirmed_transactions,
       CAST(avg(vbytes_per_second) as DOUBLE) as vbytes_per_second,
       CAST(avg(vsize_1) as DOUBLE) as vsize_1,
       CAST(avg(vsize_2) as DOUBLE) as vsize_2,
@@ -219,6 +220,7 @@ class StatisticsApi {
   private getQueryForDays(div: number, interval: string) {
     return `SELECT
       UNIX_TIMESTAMP(added) as added,
+      CAST(avg(unconfirmed_transactions) as DOUBLE) as unconfirmed_transactions,
       CAST(avg(vbytes_per_second) as DOUBLE) as vbytes_per_second,
       vsize_1,
       vsize_2,
@@ -401,6 +403,7 @@ class StatisticsApi {
     return statistic.map((s) => {
       return {
         added: s.added,
+        count: s.unconfirmed_transactions,
         vbytes_per_second: s.vbytes_per_second,
         mempool_byte_weight: s.mempool_byte_weight,
         total_fee: s.total_fee,

backend/src/api/transaction-utils.ts

@@ -5,6 +5,7 @@ import bitcoinApi, { bitcoinCoreApi } from './bitcoin/bitcoin-api-factory';
 import * as bitcoinjs from 'bitcoinjs-lib';
 import logger from '../logger';
 import config from '../config';
+import pLimit from '../utils/p-limit';
 
 class TransactionUtils {
   constructor() { }
@@ -74,8 +75,12 @@ class TransactionUtils {
 
   public async $getMempoolTransactionsExtended(txids: string[], addPrevouts = false, lazyPrevouts = false, forceCore = false): Promise<MempoolTransactionExtended[]> {
     if (forceCore || config.MEMPOOL.BACKEND !== 'esplora') {
-      const results = await Promise.allSettled(txids.map(txid => this.$getTransactionExtended(txid, addPrevouts, lazyPrevouts, forceCore, true)));
-      return (results.filter(r => r.status === 'fulfilled') as PromiseFulfilledResult<MempoolTransactionExtended>[]).map(r => r.value);
+      const limiter = pLimit(8); // Run 8 requests at a time
+      const results = await Promise.allSettled(txids.map(
+        txid => limiter(() => this.$getMempoolTransactionExtended(txid, addPrevouts, lazyPrevouts, forceCore))
+      ));
+      return results.filter(reply => reply.status === 'fulfilled')
+        .map(r => (r as PromiseFulfilledResult<MempoolTransactionExtended>).value);
     } else {
       const transactions = await bitcoinApi.$getMempoolTransactions(txids);
       return transactions.map(transaction => {

backend/src/api/websocket-handler.ts

@@ -486,6 +486,7 @@ class WebsocketHandler {
 
     // pre-compute address transactions
     const addressCache = this.makeAddressCache(newTransactions);
+    const removedAddressCache = this.makeAddressCache(deletedTransactions);
 
     this.wss.clients.forEach(async (client) => {
       if (client.readyState !== WebSocket.OPEN) {
@@ -526,11 +527,15 @@ class WebsocketHandler {
       }
 
       if (client['track-address']) {
-        const foundTransactions = Array.from(addressCache[client['track-address']]?.values() || []);
+        const newTransactions = Array.from(addressCache[client['track-address']]?.values() || []);
+        const removedTransactions = Array.from(removedAddressCache[client['track-address']]?.values() || []);
         // txs may be missing prevouts in non-esplora backends
         // so fetch the full transactions now
-        const fullTransactions = (config.MEMPOOL.BACKEND !== 'esplora') ? await this.getFullTransactions(foundTransactions) : foundTransactions;
+        const fullTransactions = (config.MEMPOOL.BACKEND !== 'esplora') ? await this.getFullTransactions(newTransactions) : newTransactions;
 
+        if (removedTransactions.length) {
+          response['address-removed-transactions'] = JSON.stringify(removedTransactions);
+        }
         if (fullTransactions.length) {
           response['address-transactions'] = JSON.stringify(fullTransactions);
         }
@@ -586,13 +591,25 @@ class WebsocketHandler {
 
         const mempoolTx = newMempool[trackTxid];
         if (mempoolTx && mempoolTx.position) {
-          response['txPosition'] = JSON.stringify({
+          const positionData = {
             txid: trackTxid,
             position: {
               ...mempoolTx.position,
               accelerated: mempoolTx.acceleration || undefined,
             }
-          });
+          };
+          if (mempoolTx.cpfpDirty) {
+            positionData['cpfp'] = {
+              ancestors: mempoolTx.ancestors,
+              bestDescendant: mempoolTx.bestDescendant || null,
+              descendants: mempoolTx.descendants || null,
+              effectiveFeePerVsize: mempoolTx.effectiveFeePerVsize || null,
+              sigops: mempoolTx.sigops,
+              adjustedVsize: mempoolTx.adjustedVsize,
+              acceleration: mempoolTx.acceleration
+            };
+          }
+          response['txPosition'] = JSON.stringify(positionData);
         }
       }
 

backend/src/mempool.interfaces.ts

@@ -104,6 +104,7 @@ export interface MempoolTransactionExtended extends TransactionExtended {
   adjustedFeePerVsize: number;
   inputs?: number[];
   lastBoosted?: number;
+  cpfpDirty?: boolean;
 }
 
 export interface AuditTransaction {

backend/src/utils/p-limit.ts

@@ -0,0 +1,179 @@
+/*
+MIT License
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https://sindresorhus.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this
+software and associated documentation files (the "Software"), to deal in the Software
+without restriction, including without limitation the rights to use, copy, modify,
+merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice shall be included in all copies
+or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+/*
+How it works:
+`this._head` is an instance of `Node` which keeps track of its current value and nests
+another instance of `Node` that keeps the value that comes after it. When a value is
+provided to `.enqueue()`, the code needs to iterate through `this._head`, going deeper
+and deeper to find the last value. However, iterating through every single item is slow.
+This problem is solved by saving a reference to the last value as `this._tail` so that
+it can reference it to add a new value.
+*/
+
+class Node {
+  value;
+  next;
+
+  constructor(value) {
+    this.value = value;
+  }
+}
+
+class Queue {
+  private _head;
+  private _tail;
+  private _size;
+
+  constructor() {
+    this.clear();
+  }
+
+  enqueue(value) {
+    const node = new Node(value);
+
+    if (this._head) {
+      this._tail.next = node;
+      this._tail = node;
+    } else {
+      this._head = node;
+      this._tail = node;
+    }
+
+    this._size++;
+  }
+
+  dequeue() {
+    const current = this._head;
+    if (!current) {
+      return;
+    }
+
+    this._head = this._head.next;
+    this._size--;
+    return current.value;
+  }
+
+  clear() {
+    this._head = undefined;
+    this._tail = undefined;
+    this._size = 0;
+  }
+
+  get size() {
+    return this._size;
+  }
+
+  *[Symbol.iterator]() {
+    let current = this._head;
+
+    while (current) {
+      yield current.value;
+      current = current.next;
+    }
+  }
+}
+
+interface LimitFunction {
+  readonly activeCount: number;
+  readonly pendingCount: number;
+  clearQueue: () => void;
+  <Arguments extends unknown[], ReturnType>(
+    fn: (...args: Arguments) => PromiseLike<ReturnType> | ReturnType,
+    ...args: Arguments
+  ): Promise<ReturnType>;
+}
+
+export default function pLimit(concurrency: number): LimitFunction {
+  if (
+    !(
+      (Number.isInteger(concurrency) ||
+        concurrency === Number.POSITIVE_INFINITY) &&
+      concurrency > 0
+    )
+  ) {
+    throw new TypeError('Expected `concurrency` to be a number from 1 and up');
+  }
+
+  const queue = new Queue();
+  let activeCount = 0;
+
+  const next = () => {
+    activeCount--;
+
+    if (queue.size > 0) {
+      queue.dequeue()();
+    }
+  };
+
+  const run = async (fn, resolve, args) => {
+    activeCount++;
+
+    const result = (async () => fn(...args))();
+
+    resolve(result);
+
+    try {
+      await result;
+    } catch {}
+
+    next();
+  };
+
+  const enqueue = (fn, resolve, args) => {
+    queue.enqueue(run.bind(undefined, fn, resolve, args));
+
+    (async () => {
+      // This function needs to wait until the next microtask before comparing
+      // `activeCount` to `concurrency`, because `activeCount` is updated asynchronously
+      // when the run function is dequeued and called. The comparison in the if-statement
+      // needs to happen asynchronously as well to get an up-to-date value for `activeCount`.
+      await Promise.resolve();
+
+      if (activeCount < concurrency && queue.size > 0) {
+        queue.dequeue()();
+      }
+    })();
+  };
+
+  const generator = (fn, ...args) =>
+    new Promise((resolve) => {
+      enqueue(fn, resolve, args);
+    });
+
+  Object.defineProperties(generator, {
+    activeCount: {
+      get: () => activeCount,
+    },
+    pendingCount: {
+      get: () => queue.size,
+    },
+    clearQueue: {
+      value: () => {
+        queue.clear();
+      },
+    },
+  });
+
+  return generator as any;
+}

contributors/TheBlueMatt.txt

@@ -0,0 +1,3 @@
+I hereby accept the terms of the Contributor License Agreement in the CONTRIBUTING.md file with sha256 hash c80c5ee4c71c5a76a1f6cd35339bd0c45b25b491933ea7b02a66470e9f43a6fd.
+
+Signed: TheBlueMatt

contributors/orangesurf.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 September 12, 2023.
+
+Signed: orange surf

docker/backend/Dockerfile

@@ -1,4 +1,4 @@
-FROM node:16.16.0-buster-slim AS builder
+FROM node:20.8.0-buster-slim AS builder
 
 ARG commitHash
 ENV MEMPOOL_COMMIT_HASH=${commitHash}
@@ -17,7 +17,7 @@ ENV PATH="/root/.cargo/bin:$PATH"
 RUN npm install --omit=dev --omit=optional
 RUN npm run package
 
-FROM node:16.16.0-buster-slim
+FROM node:20.8.0-buster-slim
 
 WORKDIR /backend
 

docker/backend/mempool-config.json

@@ -52,7 +52,7 @@
     "REST_API_URL": "__ESPLORA_REST_API_URL__",
     "UNIX_SOCKET_PATH": "__ESPLORA_UNIX_SOCKET_PATH__",
     "RETRY_UNIX_SOCKET_AFTER": __ESPLORA_RETRY_UNIX_SOCKET_AFTER__,
-    "FALLBACK": __ESPLORA_FALLBACK__,
+    "FALLBACK": __ESPLORA_FALLBACK__
   },
   "SECOND_CORE_RPC": {
     "HOST": "__SECOND_CORE_RPC_HOST__",

docker/backend/start.sh

@@ -53,6 +53,7 @@ __ELECTRUM_TLS_ENABLED__=${ELECTRUM_TLS_ENABLED:=false}
 __ESPLORA_REST_API_URL__=${ESPLORA_REST_API_URL:=http://127.0.0.1:3000}
 __ESPLORA_UNIX_SOCKET_PATH__=${ESPLORA_UNIX_SOCKET_PATH:="null"}
 __ESPLORA_RETRY_UNIX_SOCKET_AFTER__=${ESPLORA_RETRY_UNIX_SOCKET_AFTER:=30000}
+__ESPLORA_FALLBACK__=${ESPLORA_FALLBACK:=[]}
 
 # SECOND_CORE_RPC
 __SECOND_CORE_RPC_HOST__=${SECOND_CORE_RPC_HOST:=127.0.0.1}
@@ -138,7 +139,7 @@ __MEMPOOL_SERVICES_API__=${MEMPOOL_SERVICES_API:=""}
 __MEMPOOL_SERVICES_ACCELERATIONS__=${MEMPOOL_SERVICES_ACCELERATIONS:=false}
 
 # REDIS
-__REDIS_ENABLED__=${REDIS_ENABLED:=true}
+__REDIS_ENABLED__=${REDIS_ENABLED:=false}
 __REDIS_UNIX_SOCKET_PATH__=${REDIS_UNIX_SOCKET_PATH:=true}
 
 mkdir -p "${__MEMPOOL_CACHE_DIR__}"
@@ -192,6 +193,7 @@ sed -i "s!__ELECTRUM_TLS_ENABLED__!${__ELECTRUM_TLS_ENABLED__}!g" mempool-config
 sed -i "s!__ESPLORA_REST_API_URL__!${__ESPLORA_REST_API_URL__}!g" mempool-config.json
 sed -i "s!__ESPLORA_UNIX_SOCKET_PATH__!${__ESPLORA_UNIX_SOCKET_PATH__}!g" mempool-config.json
 sed -i "s!__ESPLORA_RETRY_UNIX_SOCKET_AFTER__!${__ESPLORA_RETRY_UNIX_SOCKET_AFTER__}!g" mempool-config.json
+sed -i "s!__ESPLORA_FALLBACK__!${__ESPLORA_FALLBACK__}!g" mempool-config.json
 
 sed -i "s!__SECOND_CORE_RPC_HOST__!${__SECOND_CORE_RPC_HOST__}!g" mempool-config.json
 sed -i "s!__SECOND_CORE_RPC_PORT__!${__SECOND_CORE_RPC_PORT__}!g" mempool-config.json

docker/docker-compose.yml

@@ -38,7 +38,7 @@ services:
       MYSQL_USER: "mempool"
       MYSQL_PASSWORD: "mempool"
       MYSQL_ROOT_PASSWORD: "admin"
-    image: mariadb:10.5.8
+    image: mariadb:10.5.21
     user: "1000:1000"
     restart: on-failure
     stop_grace_period: 1m

docker/electrum/Dockerfile

@@ -1,32 +0,0 @@
-FROM ubuntu:18.04
-MAINTAINER mempool.space developers
-EXPOSE 50002
-
-# runs as UID 1000 GID 1000 inside the container
-
-ENV VERSION 4.0.9
-RUN set -x \
-        && apt-get update \
-	&& DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends gpg gpg-agent dirmngr \
-	&& DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends wget xpra python3-pyqt5 python3-wheel python3-pip python3-setuptools libsecp256k1-0 libsecp256k1-dev python3-numpy python3-dev build-essential \
-	&& wget -O /tmp/Electrum-${VERSION}.tar.gz https://download.electrum.org/${VERSION}/Electrum-${VERSION}.tar.gz \
-	&& wget -O /tmp/Electrum-${VERSION}.tar.gz.asc https://download.electrum.org/${VERSION}/Electrum-${VERSION}.tar.gz.asc \
-	&& gpg --keyserver keys.gnupg.net --recv-keys 6694D8DE7BE8EE5631BED9502BD5824B7F9470E6 \
-	&& gpg --verify /tmp/Electrum-${VERSION}.tar.gz.asc /tmp/Electrum-${VERSION}.tar.gz \
-	&& pip3 install /tmp/Electrum-${VERSION}.tar.gz \
-	&& test -f /usr/local/bin/electrum \
-	&& rm -vrf /tmp/Electrum-${VERSION}.tar.gz /tmp/Electrum-${VERSION}.tar.gz.asc ${HOME}/.gnupg \
-	&& apt-get purge --autoremove -y python3-wheel python3-pip python3-setuptools python3-dev build-essential libsecp256k1-dev curl gpg gpg-agent dirmngr \
-	&& apt-get clean && rm -rf /var/lib/apt/lists/* \
-	&& useradd -d /home/mempool -m mempool \
-	&& mkdir /electrum \
-	&& ln -s /electrum /home/mempool/.electrum \
-	&& chown mempool:mempool /electrum
-
-USER mempool
-ENV HOME /home/mempool
-WORKDIR /home/mempool
-VOLUME /electrum
-
-CMD ["/usr/bin/xpra", "start", ":100", "--start-child=/usr/local/bin/electrum", "--bind-tcp=0.0.0.0:50002","--daemon=yes", "--notifications=no", "--mdns=no", "--pulseaudio=no", "--html=off", "--speaker=disabled", "--microphone=disabled", "--webcam=no", "--printing=no", "--dbus-launch=", "--exit-with-children"]
-ENTRYPOINT ["electrum"]

docker/frontend/Dockerfile

@@ -1,4 +1,4 @@
-FROM node:16.16.0-buster-slim AS builder
+FROM node:20.8.0-buster-slim AS builder
 
 ARG commitHash
 ENV DOCKER_COMMIT_HASH=${commitHash}
@@ -13,7 +13,7 @@ RUN npm install --omit=dev --omit=optional
 
 RUN npm run build
 
-FROM nginx:1.17.8-alpine
+FROM nginx:1.24.0-alpine
 
 WORKDIR /patch
 

docker/frontend/entrypoint.sh

@@ -39,6 +39,7 @@ __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}
+__ACCELERATOR__=${ACCELERATOR:=false}
 __HISTORICAL_PRICE__=${HISTORICAL_PRICE:=true}
 
 # Export as environment variables to be used by envsubst
@@ -65,6 +66,7 @@ export __AUDIT__
 export __MAINNET_BLOCK_AUDIT_START_HEIGHT__
 export __TESTNET_BLOCK_AUDIT_START_HEIGHT__
 export __SIGNET_BLOCK_AUDIT_START_HEIGHT__
+export __ACCELERATOR__
 export __HISTORICAL_PRICE__
 
 folder=$(find /var/www/mempool -name "config.js" | xargs dirname)

frontend/package.json

@@ -35,7 +35,7 @@
     "start:local-staging": "npm run generate-config && npm run sync-assets-dev && npm run ng -- serve -c local-staging",
     "start:mixed": "npm run generate-config && npm run sync-assets-dev && npm run ng -- serve -c mixed",
     "build": "npm run generate-config && npm run ng -- build --configuration production --localize && npm run sync-assets && npm run build-mempool.js",
-    "sync-assets": "rsync -av ./src/resources ./dist/mempool/browser && node sync-assets.js 'dist/mempool/browser/resources'",
+    "sync-assets": "rsync -av ./src/resources ./dist/mempool/browser && node sync-assets.js 'dist/mempool/browser/resources/'",
     "sync-assets-dev": "node sync-assets.js 'src/resources/'",
     "generate-config": "node generate-config.js",
     "build-mempool.js": "npm run build-mempool-js && npm run build-mempool-liquid-js && npm run build-mempool-bisq-js",
@@ -61,18 +61,18 @@
     "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": "^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",
+    "@angular-devkit/build-angular": "^16.2.0",
+    "@angular/animations": "^16.2.2",
+    "@angular/cli": "^16.2.0",
+    "@angular/common": "^16.2.2",
+    "@angular/compiler": "^16.2.2",
+    "@angular/core": "^16.2.2",
+    "@angular/forms": "^16.2.2",
+    "@angular/localize": "^16.2.2",
+    "@angular/platform-browser": "^16.2.2",
+    "@angular/platform-browser-dynamic": "^16.2.2",
+    "@angular/platform-server": "^16.2.2",
+    "@angular/router": "^16.2.2",
     "@fortawesome/angular-fontawesome": "~0.13.0",
     "@fortawesome/fontawesome-common-types": "~6.4.0",
     "@fortawesome/fontawesome-svg-core": "~6.4.0",
@@ -111,9 +111,9 @@
   "optionalDependencies": {
     "@cypress/schematic": "^2.5.0",
     "@types/cypress": "^1.1.3",
-    "cypress": "^12.17.2",
-    "cypress-fail-on-console-error": "~4.0.3",
-    "cypress-wait-until": "^2.0.0",
+    "cypress": "^13.2.0",
+    "cypress-fail-on-console-error": "~5.0.0",
+    "cypress-wait-until": "^2.0.1",
     "mock-socket": "~9.2.1",
     "start-server-and-test": "~2.0.0"
   },

frontend/proxy.conf.local-esplora.js

@@ -112,6 +112,14 @@ PROXY_CONFIG.push(...[
         "^/testnet": ""
     },
   },
+  {
+    context: ['/api/v1/services/**'],
+    target: `http://localhost:9000`,
+    secure: false,
+    ws: true,
+    changeOrigin: true,
+    proxyTimeout: 30000,
+  },
   {
     context: ['/api/v1/**'],
     target: `http://127.0.0.1:8999`,

frontend/proxy.conf.local.js

@@ -112,6 +112,14 @@ PROXY_CONFIG.push(...[
         "^/testnet": ""
     },
   },
+  {
+    context: ['/api/v1/services/**'],
+    target: `http://localhost:9000`,
+    secure: false,
+    ws: true,
+    changeOrigin: true,
+    proxyTimeout: 30000,
+  },
   {
     context: ['/api/v1/**'],
     target: `http://localhost:8999`,

frontend/proxy.conf.mixed.js

@@ -95,6 +95,14 @@ if (configContent && configContent.BASE_MODULE === 'bisq') {
 }
 
 PROXY_CONFIG.push(...[
+  {
+    context: ['/api/v1/services/**'],
+    target: `http://localhost:9000`,
+    secure: false,
+    ws: true,
+    changeOrigin: true,
+    proxyTimeout: 30000,
+  },
   {
     context: ['/api/v1/**'],
     target: `http://localhost:8999`,

frontend/src/app/bisq/bisq-address/bisq-address.component.ts

@@ -41,6 +41,7 @@ export class BisqAddressComponent implements OnInit, OnDestroy {
           document.body.scrollTo(0, 0);
           this.addressString = params.get('id') || '';
           this.seoService.setTitle($localize`:@@bisq-address.component.browser-title:Address: ${this.addressString}:INTERPOLATION:`);
+          this.seoService.setDescription($localize`:@@meta.description.bisq.address:See current balance, pending transactions, and history of confirmed transactions for BSQ address ${this.addressString}:INTERPOLATION:.`);
 
           return this.bisqApiService.getAddress$(this.addressString)
             .pipe(

frontend/src/app/bisq/bisq-block/bisq-block.component.ts

@@ -69,6 +69,7 @@ export class BisqBlockComponent implements OnInit, OnDestroy {
                   this.location.replaceState(
                     this.router.createUrlTree(['/bisq/block/', hash]).toString()
                   );
+                  this.seoService.updateCanonical(this.location.path());
                   return this.bisqApiService.getBlock$(this.blockHash)
                     .pipe(catchError(this.caughtHttpError.bind(this)));
                 }),
@@ -88,6 +89,7 @@ export class BisqBlockComponent implements OnInit, OnDestroy {
         this.isLoading = false;
         this.blockHeight = block.height;
         this.seoService.setTitle($localize`:@@bisq-block.component.browser-title:Block ${block.height}:BLOCK_HEIGHT:: ${block.hash}:BLOCK_HASH:`);
+        this.seoService.setDescription($localize`:@@meta.description.bisq.block:See all BSQ transactions in Bitcoin block ${block.height}:BLOCK_HEIGHT: (block hash ${block.hash}:BLOCK_HASH:).`);
         this.block = block;
       });
   }

frontend/src/app/bisq/bisq-blocks/bisq-blocks.component.ts

@@ -36,6 +36,7 @@ export class BisqBlocksComponent implements OnInit {
   ngOnInit(): void {
     this.websocketService.want(['blocks']);
     this.seoService.setTitle($localize`:@@8a7b4bd44c0ac71b2e72de0398b303257f7d2f54:Blocks`);
+    this.seoService.setDescription($localize`:@@meta.description.bisq.blocks:See a list of recent Bitcoin blocks with BSQ transactions, total BSQ sent per block, and more.`);
     this.itemsPerPage = Math.max(Math.round(this.contentSpace / this.fiveItemsPxSize) * 5, 10);
     this.loadingItems = Array(this.itemsPerPage);
     if (document.body.clientWidth < 670) {

frontend/src/app/bisq/bisq-dashboard/bisq-dashboard.component.ts

@@ -29,7 +29,8 @@ export class BisqDashboardComponent implements OnInit {
   ) { }
 
   ngOnInit(): void {
-    this.seoService.setTitle(`Markets`);
+    this.seoService.setTitle($localize`:@@meta.title.bisq.markets:Markets`);
+    this.seoService.setDescription($localize`:@@meta.description.bisq.markets:Explore the full Bitcoin ecosystem with The Mempool Open Project™. See Bisq market prices, trading activity, and more.`);
     this.websocketService.want(['blocks']);
 
     this.volumes$ = this.bisqApiService.getAllVolumesDay$()

frontend/src/app/bisq/bisq-main-dashboard/bisq-main-dashboard.component.ts

@@ -34,6 +34,7 @@ export class BisqMainDashboardComponent implements OnInit {
 
   ngOnInit(): void {
     this.seoService.resetTitle();
+    this.seoService.resetDescription();
     this.websocketService.want(['blocks']);
 
     this.usdPrice$ = this.stateService.conversions$.asObservable().pipe(

frontend/src/app/bisq/bisq-market/bisq-market.component.ts

@@ -48,7 +48,8 @@ export class BisqMarketComponent implements OnInit, OnDestroy {
         map(([markets, routeParams]) => {
           const pair = routeParams.get('pair');
           const pairUpperCase = pair.replace('_', '/').toUpperCase();
-          this.seoService.setTitle(`Bisq market: ${pairUpperCase}`);
+          this.seoService.setTitle($localize`:@@meta.title.bisq.market:Bisq market: ${pairUpperCase}`);
+          this.seoService.setDescription($localize`:@@meta.description.bisq.market:See price history, current buy/sell offers, and latest trades for the ${pairUpperCase} market on Bisq.`);
 
           return {
             pair: pairUpperCase,

frontend/src/app/bisq/bisq-stats/bisq-stats.component.ts

@@ -26,6 +26,7 @@ export class BisqStatsComponent implements OnInit {
     this.websocketService.want(['blocks']);
 
     this.seoService.setTitle($localize`:@@2a30a4cdb123a03facc5ab8c5b3e6d8b8dbbc3d4:BSQ statistics`);
+    this.seoService.setDescription($localize`:@@meta.description.bisq.stats:See high-level stats on the BSQ economy: supply metrics, number of addresses, BSQ price, market cap, and more.`);
     this.stateService.bsqPrice$
       .subscribe((bsqPrice) => {
         this.price = bsqPrice;

frontend/src/app/bisq/bisq-transaction/bisq-transaction.component.ts

@@ -48,6 +48,7 @@ export class BisqTransactionComponent implements OnInit, OnDestroy {
         document.body.scrollTo(0, 0);
         this.txId = params.get('id') || '';
         this.seoService.setTitle($localize`:@@bisq.transaction.browser-title:Transaction: ${this.txId}:INTERPOLATION:`);
+        this.seoService.setDescription($localize`:@@meta.description.bisq.transaction:See inputs, outputs, transaction type, burnt amount, and more for transaction with txid ${this.txId}:INTERPOLATION:.`);
         if (history.state.data) {
           return of(history.state.data);
         }

frontend/src/app/bisq/bisq-transactions/bisq-transactions.component.ts

@@ -79,6 +79,7 @@ export class BisqTransactionsComponent implements OnInit, OnDestroy {
   ngOnInit(): void {
     this.websocketService.want(['blocks']);
     this.seoService.setTitle($localize`:@@add4cd82e3e38a3110fe67b3c7df56e9602644ee:Transactions`);
+    this.seoService.setDescription($localize`:@@meta.description.bisq.transactions:See recent BSQ transactions: amount, txid, associated Bitcoin block, transaction type, and more.`);
 
     this.radioGroupForm = this.formBuilder.group({
       txTypes: [this.txTypesDefaultChecked],

frontend/src/app/components/about/about.component.html

@@ -4,12 +4,13 @@
     <span style="margin-left: auto; margin-right: -20px; margin-bottom: -20px">&reg;</span>
     <img class="logo" src="/resources/mempool-logo-bigger.png" />
     <div class="version">
-      v{{ packetJsonVersion }} [<a href="https://github.com/mempool/mempool/commit/{{ frontendGitCommitHash }}">{{ frontendGitCommitHash }}</a>]
+      <span>v{{ packetJsonVersion }} [<a href="https://github.com/mempool/mempool/commit/{{ frontendGitCommitHash }}">{{ frontendGitCommitHash }}</a>]</span>
+      <span *ngIf="stateService.env.GIT_COMMIT_HASH_MEMPOOL_SPACE">[{{ stateService.env.GIT_COMMIT_HASH_MEMPOOL_SPACE }}]</span>
     </div>
   </div>
 
   <div class="about-text">
-    <h5><ng-container i18n="about.about-the-project">The Mempool Open Source Project</ng-container><ng-template [ngIf]="locale.substr(0, 2) === 'en'"> &trade;</ng-template></h5>
+    <h5><ng-container i18n="about.about-the-project">The Mempool Open Source Project</ng-container><ng-template [ngIf]="locale.substr(0, 2) === 'en'"> &reg;</ng-template></h5>
     <p i18n>Our mempool and blockchain explorer for the Bitcoin community, focusing on the transaction fee market and multi-layer ecosystem, completely self-hosted without any trusted third-parties.</p>
   </div>
 
@@ -242,7 +243,7 @@
         <img class="image" src="/resources/profile/ronindojo.png" />
         <span>RoninDojo</span>
       </a>
-      <a href="https://github.com/runcitadel/core" target="_blank" title="Citadel">
+      <a href="https://github.com/runcitadel" target="_blank" title="Citadel">
         <img class="image" src="/resources/profile/runcitadel.svg" />
         <span>Citadel</span>
       </a>

frontend/src/app/components/about/about.component.scss

@@ -22,6 +22,7 @@
 
   .intro {
     margin: 25px auto 30px;
+    margin-top: 25px;
     width: 250px;
     display: flex;
     flex-direction: column;

frontend/src/app/components/about/about.component.ts

@@ -43,6 +43,7 @@ export class AboutComponent implements OnInit {
   ngOnInit() {
     this.backendInfo$ = this.stateService.backendInfo$;
     this.seoService.setTitle($localize`:@@004b222ff9ef9dd4771b777950ca1d0e4cd4348a:About`);
+    this.seoService.setDescription($localize`:@@meta.description.about:Learn more about The Mempool Open Source Project®\: enterprise sponsors, individual sponsors, integrations, who contributes, FOSS licensing, and more.`);
     this.websocketService.want(['blocks']);
 
     this.profiles$ = this.apiService.getAboutPageProfiles$().pipe(

frontend/src/app/components/accelerate-preview/accelerate-fee-graph.component.html

@@ -0,0 +1,21 @@
+<div class="fee-graph" *ngIf="tx && estimate">
+  <div class="column">
+    <ng-container *ngFor="let bar of bars">
+      <div class="bar {{ bar.class }}" [class.active]="bar.active" [style]="bar.style" (click)="onClick($event, bar);">
+        <div class="fill"></div>
+        <div class="line">
+          <p class="fee-rate">
+            <span class="label">{{ bar.label }}</span>
+            <span class="rate">
+              <app-fee-rate [fee]="bar.rate"></app-fee-rate>
+            </span>
+          </p>
+        </div>
+        <div class="spacer"></div>
+        <span class="fee">{{ bar.class === 'tx' ? '' : '+' }} {{ bar.fee | number }} <span class="symbol" i18n="shared.sat|sat">sat</span></span>
+        <div class="spacer"></div>
+        <div class="spacer"></div>
+      </div>
+    </ng-container>
+  </div>
+</div>

frontend/src/app/components/accelerate-preview/accelerate-fee-graph.component.scss

@@ -0,0 +1,157 @@
+.fee-graph {
+  height: 100%;
+  min-width: 120px;
+  width: 120px;
+  max-height: 90vh;
+  margin-left: 4em;
+  margin-right: 1.5em;
+  padding-bottom: 63px;
+
+  .column {
+    width: 100%;
+    height: 100%;
+    position: relative;
+    background: #181b2d;
+
+    .bar {
+      position: absolute;
+      bottom: 0;
+      left: 0;
+      right: 0;
+      display: flex;
+      flex-direction: column;
+      justify-content: center;
+      align-items: center;
+
+      .fill {
+        position: absolute;
+        left: 0;
+        right: 0;
+        top: 0;
+        bottom: 0;
+        opacity: 0.75;
+        pointer-events: none;
+      }
+
+      .fee {
+        font-size: 0.9em;
+        opacity: 0;
+        pointer-events: none;
+      }
+
+      .spacer {
+        width: 100%;
+        height: 1px;
+        flex-grow: 1;
+        pointer-events: none;
+      }
+
+      .line {
+        position: absolute;
+        right: 0;
+        top: 0;
+        left: -4.5em;
+        border-top: dashed white 1.5px;
+
+        .fee-rate {
+          width: 100%;
+          position: absolute;
+          left: 0;
+          right: 0.2em;
+          font-size: 0.8em;
+          display: flex;
+          flex-direction: row-reverse;
+          justify-content: space-between;
+          margin: 0;
+
+          .label {
+            margin-right: .2em;
+          }
+
+          .rate .symbol {
+            color: white;
+          }
+        }
+      }
+
+      &.tx {
+        .fill {
+          background: #3bcc49;
+        }
+        .line {
+          .fee-rate {
+            top: 0;
+          }
+        }
+        .fee {
+          position: absolute;
+          opacity: 1;
+          z-index: 11;
+        }
+      }
+
+      &.target {
+        .fill {
+          background: #653b9c;
+        }
+        .fee {
+          position: absolute;
+          opacity: 1;
+          z-index: 11;
+        }
+        .line .fee-rate {
+          bottom: 2px;
+        }
+      }
+
+      &.max {
+        cursor: pointer;
+        .line .fee-rate {
+          .label {
+            opacity: 0;
+          }
+          bottom: 2px;
+        }
+        &.active, &:hover {
+          .fill {
+            background: #105fb0;
+          }
+          .line {
+            .fee-rate .label {
+              opacity: 1;
+            }
+          }
+        }
+      }
+
+      &:hover {
+        .fill {
+          z-index: 10;
+        }
+        .line {
+          z-index: 11;
+        }
+        .fee {
+          opacity: 1;
+          z-index: 12;
+        }
+      }
+    }
+
+    &:hover > .bar:not(:hover) {
+      &.target, &.max {
+        .fee {
+          opacity: 0;
+        }
+        .line .fee-rate .label {
+          opacity: 0;
+        }
+      }
+      &.max {
+        .fill {
+          background: none;
+        }
+      }
+    }
+  }
+}

frontend/src/app/components/accelerate-preview/accelerate-fee-graph.component.ts

@@ -0,0 +1,96 @@
+import { Component, OnInit, Input, Output, OnChanges, EventEmitter, HostListener, Inject, LOCALE_ID } from '@angular/core';
+import { StateService } from '../../services/state.service';
+import { Outspend, Transaction, Vin, Vout } from '../../interfaces/electrs.interface';
+import { Router } from '@angular/router';
+import { ReplaySubject, merge, Subscription, of } from 'rxjs';
+import { tap, switchMap } from 'rxjs/operators';
+import { ApiService } from '../../services/api.service';
+import { AccelerationEstimate, RateOption } from './accelerate-preview.component';
+
+interface GraphBar {
+  rate: number;
+  style: any;
+  class: 'tx' | 'target' | 'max';
+  label: string;
+  active?: boolean;
+  rateIndex?: number;
+  fee?: number;
+}
+
+@Component({
+  selector: 'app-accelerate-fee-graph',
+  templateUrl: './accelerate-fee-graph.component.html',
+  styleUrls: ['./accelerate-fee-graph.component.scss'],
+})
+export class AccelerateFeeGraphComponent implements OnInit, OnChanges {
+  @Input() tx: Transaction;
+  @Input() estimate: AccelerationEstimate;
+  @Input() maxRateOptions: RateOption[] = [];
+  @Input() maxRateIndex: number = 0;
+  @Output() setUserBid = new EventEmitter<{ fee: number, index: number }>();
+
+  bars: GraphBar[] = [];
+  tooltipPosition = { x: 0, y: 0 };
+
+  ngOnInit(): void {
+    this.initGraph();
+  }
+
+  ngOnChanges(): void {
+    this.initGraph();
+  }
+
+  initGraph(): void {
+    if (!this.tx || !this.estimate) {
+      return;
+    }
+    const maxRate = Math.max(...this.maxRateOptions.map(option => option.rate));
+    const baseRate = this.estimate.txSummary.effectiveFee / this.estimate.txSummary.effectiveVsize;
+    const baseHeight = baseRate / maxRate;
+    const bars: GraphBar[] = this.maxRateOptions.slice().reverse().map(option => {
+      return {
+        rate: option.rate,
+        style: this.getStyle(option.rate, maxRate, baseHeight),
+        class: 'max',
+        label: 'maximum',
+        active: option.index === this.maxRateIndex,
+        rateIndex: option.index,
+        fee: option.fee,
+      }
+    });
+    bars.push({
+      rate: this.estimate.targetFeeRate,
+      style: this.getStyle(this.estimate.targetFeeRate, maxRate, baseHeight),
+      class: 'target',
+      label: 'next block',
+      fee: this.estimate.nextBlockFee - this.estimate.txSummary.effectiveFee
+    });
+    bars.push({
+      rate: baseRate,
+      style: this.getStyle(baseRate, maxRate, 0),
+      class: 'tx',
+      label: '',
+      fee: this.estimate.txSummary.effectiveFee,
+    });
+    this.bars = bars;
+  }
+
+  getStyle(rate, maxRate, base) {
+    const top = (rate / maxRate);
+    return {
+      height: `${(top - base) * 100}%`,
+      bottom: base ? `${base * 100}%` : '0',
+    }
+  }
+
+  onClick(event, bar): void {
+    if (bar.rateIndex != null) {
+      this.setUserBid.emit({ fee: bar.fee, index: bar.rateIndex });
+    }
+  }
+
+  @HostListener('pointermove', ['$event'])
+  onPointerMove(event) {
+    this.tooltipPosition = { x: event.offsetX, y: event.offsetY };
+  }
+}

frontend/src/app/components/accelerate-preview/accelerate-preview.component.html

@@ -0,0 +1,262 @@
+<div class="row" *ngIf="showSuccess">
+  <div class="col" id="successAlert">
+    <div class="alert alert-success">
+      Transaction has now been submitted to mining pools for acceleration. You can track the progress <a class="alert-link" routerLink="/services/accelerator/history">here</a>.
+    </div>
+  </div>
+</div>
+
+<div class="row" *ngIf="error">
+  <div class="col" id="mempoolError">
+    <app-mempool-error [error]="error"></app-mempool-error>
+  </div>
+</div>
+
+<div class="accelerate-cols">
+  <ng-container *ngIf="!isMobile">
+    <app-accelerate-fee-graph
+      [tx]="tx"
+      [estimate]="estimate"
+      [maxRateOptions]="maxRateOptions"
+      [maxRateIndex]="selectFeeRateIndex"
+      (setUserBid)="setUserBid($event)"
+    ></app-accelerate-fee-graph>
+  </ng-container>
+
+  <ng-container *ngIf="estimate">
+    <div [class]="{estimateDisabled: error}">
+      <h5>Your transaction</h5>
+      <div class="row">
+        <div class="col">
+          <small *ngIf="hasAncestors" class="form-text text-muted mb-2">
+            Plus {{ estimate.txSummary.ancestorCount - 1 }} unconfirmed ancestor{{ estimate.txSummary.ancestorCount > 2 ? 's' : ''}}.
+          </small>
+          <table class="table table-borderless table-border table-dark table-accelerator">
+            <tbody>
+              <tr class="group-first">
+                <td class="item">
+                  Virtual size
+                </td>
+                <td class="units" [innerHTML]="'&lrm;' + (estimate.txSummary.effectiveVsize | vbytes: 2)"></td>
+              </tr>
+              <tr class="info">
+                <td class="info">
+                  <i><small>Size in vbytes of this transaction<span *ngIf="hasAncestors"> and its unconfirmed ancestors</span></small></i>
+                </td>
+              </tr>
+              <tr>
+                <td class="item">
+                  In-band fees
+                </td>
+                <td class="units">
+                  {{ estimate.txSummary.effectiveFee | number : '1.0-0' }} <span class="symbol" i18n="shared.sats|sats">sats</span>
+                </td>
+              </tr>
+              <tr class="info group-last">
+                <td class="info">
+                  <i><small>Fees already paid by this transaction<span *ngIf="hasAncestors"> and its unconfirmed ancestors</span></small></i>
+                </td>
+              </tr>
+            </tbody>
+          </table>
+        </div>
+      </div>
+      <br>
+      <h5>How much more are you willing to pay?</h5>
+      <div class="row">
+        <div class="col">
+          <small class="form-text text-muted mb-2">
+            Choose the maximum extra transaction fee you're willing to pay to get into the next block.<br>
+            If the estimated next block rate rises beyond this limit, we will automatically cancel your acceleration request.
+          </small>
+          <div class="form-group">
+            <div class="fee-card">
+              <div class="d-flex mb-0">
+                <ng-container *ngFor="let option of maxRateOptions">
+                  <button type="button" class="btn btn-primary flex-grow-1 btn-border btn-sm feerate" [class]="{active: selectFeeRateIndex === option.index}" (click)="setUserBid(option)">
+                    <span class="fee">{{ option.fee | number }} <span class="symbol" i18n="shared.sats|sats">sats</span></span>
+                    <span class="rate">~ <app-fee-rate [fee]="option.rate" rounding="1.0-0"></app-fee-rate></span>
+                  </button>
+                </ng-container>
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+  
+      <h5>Acceleration summary</h5>
+      <div class="row mb-3">
+        <div class="col">
+          <div class="table-toggle btn-group btn-group-toggle">
+            <div class="btn btn-primary btn-sm" [class.active]="showTable === 'estimated'" (click)="showTable = 'estimated'">
+              <span>Estimated cost</span>
+            </div>
+            <div class="btn btn-primary btn-sm" [class.active]="showTable === 'maximum'" (click)="showTable = 'maximum'">
+              <span>Maximum cost</span>
+            </div>
+          </div>
+          <table class="table table-borderless table-border table-dark table-accelerator">
+            <tbody>
+              <!-- ESTIMATED FEE -->
+              <ng-container *ngIf="showTable === 'estimated'">
+                <tr class="group-first">
+                  <td class="item">
+                    Next block market rate
+                  </td>
+                  <td class="amt" style="font-size: 20px">
+                    {{ estimate.targetFeeRate | number : '1.0-0' }}
+                  </td>
+                  <td class="units"><span class="symbol" i18n="shared.sat-vbyte|sat/vB">sat/vB</span></td>
+                </tr>
+                <tr class="info">
+                  <td class="info">
+                    <i><small>Estimated extra fee required</small></i>
+                  </td>
+                  <td class="amt">
+                    {{ math.max(0, estimate.nextBlockFee - estimate.txSummary.effectiveFee) | number }}
+                  </td>
+                  <td class="units">
+                    <span class="symbol" i18n="shared.sats|sats">sats</span>
+                    <span class="fiat"><app-fiat [value]="math.max(0, estimate.nextBlockFee - estimate.txSummary.effectiveFee)"></app-fiat></span>
+                  </td>
+                </tr>
+              </ng-container>
+              <!-- USER MAX BID -->
+              <ng-container *ngIf="showTable === 'maximum'">
+                <tr class="group-first">
+                  <td class="item">
+                    Your maximum
+                  </td>
+                  <td class="amt" style="width: 45%; font-size: 20px">
+                    ~{{ ((estimate.txSummary.effectiveFee + userBid) / estimate.txSummary.effectiveVsize) | number : '1.0-0' }}
+                  </td>
+                  <td class="units"><span class="symbol" i18n="shared.sat-vbyte|sat/vB">sat/vB</span></td>
+                </tr>
+                <tr class="info">
+                  <td class="info">
+                    <i><small>The maximum extra transaction fee you could pay</small></i>
+                  </td>
+                  <td class="amt">
+                    <span>
+                      {{ userBid | number }}
+                    </span>
+                  </td>
+                  <td class="units">
+                    <span class="symbol" i18n="shared.sats|sats">sats</span>
+                    <span class="fiat"><app-fiat [value]="userBid"></app-fiat></span>
+                  </td>
+                </tr>
+              </ng-container>
+  
+              <!-- MEMPOOL BASE FEE -->
+              <tr>
+                <td class="item">
+                  Mempool Accelerator™ fees
+                </td>
+              </tr>
+              <tr class="info">
+                <td class="info">
+                  <i><small>mempool.space fee</small></i>
+                </td>
+                <td class="amt">
+                  +{{ estimate.mempoolBaseFee | number }}
+                </td>
+                <td class="units">
+                  <span class="symbol" i18n="shared.sats|sats">sats</span>
+                  <span class="fiat"><app-fiat [value]="estimate.mempoolBaseFee"></app-fiat></span>
+                </td>
+              </tr>
+              <tr class="info group-last" style="border-bottom: 1px solid lightgrey">
+                <td class="info">
+                  <i><small>Transaction vsize fee</small></i>
+                </td>
+                <td class="amt">
+                  +{{ estimate.vsizeFee | number }}
+                </td>
+                <td class="units">
+                  <span class="symbol" i18n="shared.sats|sats">sats</span>
+                  <span class="fiat"><app-fiat [value]="estimate.vsizeFee"></app-fiat></span>
+                </td>
+              </tr>
+
+              <!-- NEXT BLOCK ESTIMATE -->
+              <ng-container *ngIf="showTable === 'estimated'">
+                <tr class="group-first">
+                  <td class="item">
+                    <b style="background-color: #5E35B1" class="p-1 pl-0">Estimated acceleration cost</b>
+                  </td>
+                  <td class="amt">
+                    <span style="background-color: #5E35B1" class="p-1 pl-0">
+                      {{ estimate.cost + estimate.mempoolBaseFee + estimate.vsizeFee | number }}
+                    </span>
+                  </td>
+                  <td class="units">
+                    <span class="symbol" i18n="shared.sats|sats">sats</span>
+                    <span class="fiat"><app-fiat [value]="estimate.cost + estimate.mempoolBaseFee + estimate.vsizeFee"></app-fiat></span>
+                  </td>
+                </tr>
+                <tr class="info group-last">
+                  <td class="info">
+                    <i><small>If your tx is accelerated to </small><small>{{ estimate.targetFeeRate | number : '1.0-0' }} <span class="symbol" i18n="shared.sat-vbyte|sat/vB">sat/vB</span></small></i>
+                  </td>
+                </tr>
+              </ng-container>
+  
+              <!-- MAX COST -->
+              <ng-container *ngIf="showTable === 'maximum'">
+                <tr class="group-first">
+                  <td class="item">
+                    <b style="background-color: #105fb0;" class="p-1 pl-0">Maximum acceleration cost</b>
+                  </td>
+                  <td class="amt">
+                    <span style="background-color: #105fb0" class="p-1 pl-0">
+                      {{ maxCost | number }}
+                    </span>
+                  </td>
+                  <td class="units">
+                    <span class="symbol" i18n="shared.sats|sats">sats</span>
+                    <span class="fiat">
+                      <app-fiat [value]="maxCost" [colorClass]="estimate.userBalance < maxCost ? 'red-color' : 'green-color'"></app-fiat>
+                    </span>
+                  </td>
+                </tr>
+                <tr class="info group-last">
+                  <td class="info">
+                    <i><small>If your tx is accelerated to </small><small>~{{ ((estimate.txSummary.effectiveFee + userBid) / estimate.txSummary.effectiveVsize) | number : '1.0-0' }}  <span class="symbol" i18n="shared.sat-vbyte|sat/vB">sat/vB</span></small></i>
+                  </td>
+                </tr>
+              </ng-container>
+  
+              <!-- USER BALANCE -->
+              <ng-container *ngIf="estimate.userBalance < maxCost">
+                <tr class="group-first group-last" style="border-top: 1px dashed grey">
+                  <td class="item">
+                    Available balance
+                  </td>
+                  <td class="amt">
+                    {{ estimate.userBalance | number }}
+                  </td>
+                  <td class="units">
+                    <span class="symbol" i18n="shared.sats|sats">sats</span>
+                    <span class="fiat">
+                      <app-fiat [value]="estimate.userBalance" [colorClass]="estimate.userBalance < maxCost ? 'red-color' : 'green-color'"></app-fiat>
+                    </span>
+                  </td>
+                </tr>
+              </ng-container>
+            </tbody>
+          </table>
+        </div>
+      </div>
+  
+      <div class="row mb-3" *ngIf="isLoggedIn()">
+        <div class="col">
+          <div class="d-flex justify-content-end">
+            <button class="btn btn-sm btn-primary btn-success" style="width: 150px" (click)="accelerate()">Accelerate</button>
+          </div>
+        </div>
+      </div>
+  
+    </div>
+  </ng-container>
+</div>

frontend/src/app/components/accelerate-preview/accelerate-preview.component.scss

@@ -0,0 +1,88 @@
+.fee-card {
+  padding: 15px;
+  background-color: #1d1f31;
+
+  .feerate {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    justify-content: center;
+
+    .fee {
+      font-size: 1.2em;
+    }
+    .rate {
+      font-size: 0.9em;
+      .symbol {
+        color: white;
+      }
+    }
+  }
+}
+
+.btn-border {
+  border: solid 1px black;
+  background-color: #0c4a87;
+}
+
+.feerate.active {
+  background-color: #105fb0 !important;
+  opacity: 1;
+  border: 1px solid white !important;
+}
+
+.estimateDisabled {
+  opacity: 0.5;
+  pointer-events: none;
+}
+
+.table-toggle {
+  width: 100%;
+  margin-top: 0.5em;
+}
+
+.table-accelerator {
+  tr {
+    text-wrap: wrap;
+
+    td {
+      padding-top: 0;
+      padding-bottom: 0;
+      vertical-align: baseline;
+    }
+
+    &.group-first {
+      td {
+        padding-top: 0.75rem;
+      }
+    }
+    &.group-last {
+      td {
+        padding-bottom: 0.75rem;
+      }
+    }
+  }
+  td {
+    &:first-child {
+      width: 100vw;
+    }
+    &.info {
+      color: #6c757d;
+    }
+    &.amt {
+      text-align: right;
+      padding-right: 0.2em;
+    }
+    &.units {
+      padding-left: 0.2em;
+      white-space: nowrap;
+    }
+  }
+}
+
+.accelerate-cols {
+  display: flex;
+  flex-direction: row;
+  align-items: stretch;
+  margin-top: 1em;
+}

frontend/src/app/components/accelerate-preview/accelerate-preview.component.ts

@@ -0,0 +1,205 @@
+import { Component, OnInit, Input, OnDestroy, OnChanges, SimpleChanges, HostListener } from '@angular/core';
+import { ApiService } from '../../services/api.service';
+import { Subscription, catchError, of, tap } from 'rxjs';
+import { StorageService } from '../../services/storage.service';
+import { Transaction } from '../../interfaces/electrs.interface';
+import { nextRoundNumber } from '../../shared/common.utils';
+
+export type AccelerationEstimate = {
+  txSummary: TxSummary;
+  nextBlockFee: number;
+  targetFeeRate: number;
+  userBalance: number;
+  enoughBalance: boolean;
+  cost: number;
+  mempoolBaseFee: number;
+  vsizeFee: number;
+}
+export type TxSummary = {
+  txid: string; // txid of the current transaction
+  effectiveVsize: number; // Total vsize of the dependency tree
+  effectiveFee: number;  // Total fee of the dependency tree in sats
+  ancestorCount: number; // Number of ancestors
+}
+
+export interface RateOption {
+  fee: number;
+  rate: number;
+  index: number;
+}
+
+export const MIN_BID_RATIO = 1;
+export const DEFAULT_BID_RATIO = 2;
+export const MAX_BID_RATIO = 4;
+
+@Component({
+  selector: 'app-accelerate-preview',
+  templateUrl: 'accelerate-preview.component.html',
+  styleUrls: ['accelerate-preview.component.scss']
+})
+export class AcceleratePreviewComponent implements OnInit, OnDestroy, OnChanges {
+  @Input() tx: Transaction | undefined;
+  @Input() scrollEvent: boolean;
+
+  math = Math;
+  error = '';
+  showSuccess = false;
+  estimateSubscription: Subscription;
+  accelerationSubscription: Subscription;
+  estimate: any;
+  hasAncestors: boolean = false;
+  minExtraCost = 0;
+  minBidAllowed = 0;
+  maxBidAllowed = 0;
+  defaultBid = 0;
+  maxCost = 0;
+  userBid = 0;
+  selectFeeRateIndex = 1;
+  showTable: 'estimated' | 'maximum' = 'maximum';
+  isMobile: boolean = window.innerWidth <= 767.98;
+
+  maxRateOptions: RateOption[] = [];
+
+  constructor(
+    private apiService: ApiService,
+    private storageService: StorageService
+  ) { }
+
+  ngOnDestroy(): void {
+    if (this.estimateSubscription) {
+      this.estimateSubscription.unsubscribe();
+    }
+  }
+
+  ngOnChanges(changes: SimpleChanges): void {
+    if (changes.scrollEvent) {
+      this.scrollToPreview('acceleratePreviewAnchor', 'center');
+    }
+  }
+
+  ngOnInit() {
+    this.estimateSubscription = this.apiService.estimate$(this.tx.txid).pipe(
+      tap((response) => {
+        if (response.status === 204) {
+          this.estimate = undefined;
+          this.error = `cannot_accelerate_tx`;
+          this.scrollToPreviewWithTimeout('mempoolError', 'center');
+          this.estimateSubscription.unsubscribe();
+        } else {
+          this.estimate = response.body;
+          if (!this.estimate) {
+            this.error = `cannot_accelerate_tx`;
+            this.scrollToPreviewWithTimeout('mempoolError', 'center');
+            this.estimateSubscription.unsubscribe();
+          }
+
+          if (this.estimate.userBalance <= 0) {
+            if (this.isLoggedIn()) {
+              this.error = `not_enough_balance`;
+              this.scrollToPreviewWithTimeout('mempoolError', 'center');
+            }
+          }
+
+          this.hasAncestors = this.estimate.txSummary.ancestorCount > 1;
+          
+          // Make min extra fee at least 50% of the current tx fee
+          this.minExtraCost = nextRoundNumber(Math.max(this.estimate.cost * 2, this.estimate.txSummary.effectiveFee));
+
+          this.maxRateOptions = [1, 2, 4].map((multiplier, index) => {
+            return {
+              fee: this.minExtraCost * multiplier,
+              rate: (this.estimate.txSummary.effectiveFee + (this.minExtraCost * multiplier)) / this.estimate.txSummary.effectiveVsize,
+              index,
+            };
+          });
+
+          this.minBidAllowed = this.minExtraCost * MIN_BID_RATIO;
+          this.defaultBid = this.minExtraCost * DEFAULT_BID_RATIO;
+          this.maxBidAllowed = this.minExtraCost * MAX_BID_RATIO;
+
+          this.userBid = this.defaultBid;
+          if (this.userBid < this.minBidAllowed) {
+            this.userBid = this.minBidAllowed;
+          } else if (this.userBid > this.maxBidAllowed) {
+            this.userBid = this.maxBidAllowed;
+          }            
+          this.maxCost = this.userBid + this.estimate.mempoolBaseFee + this.estimate.vsizeFee;
+
+          if (!this.error) {
+            this.scrollToPreview('acceleratePreviewAnchor', 'center');
+          }
+        }
+      }),
+      catchError((response) => {
+        this.estimate = undefined;
+        this.error = response.error;
+        this.scrollToPreviewWithTimeout('mempoolError', 'center');
+        this.estimateSubscription.unsubscribe();
+        return of(null);
+      })
+    ).subscribe();
+  }
+
+  /**
+   * User changed his bid
+   */
+  setUserBid({ fee, index }: { fee: number, index: number}) {
+    if (this.estimate) {
+      this.selectFeeRateIndex = index;
+      this.userBid = Math.max(0, fee);
+      this.maxCost = this.userBid + this.estimate.mempoolBaseFee + this.estimate.vsizeFee;
+    }
+  }
+
+  /**
+   * Scroll to element id with or without setTimeout
+   */
+  scrollToPreviewWithTimeout(id: string, position: ScrollLogicalPosition) {
+    setTimeout(() => {
+      this.scrollToPreview(id, position);
+    }, 100);
+  }
+  scrollToPreview(id: string, position: ScrollLogicalPosition) {
+    const acceleratePreviewAnchor = document.getElementById(id);
+    if (acceleratePreviewAnchor) {
+      acceleratePreviewAnchor.scrollIntoView({
+        behavior: 'smooth',
+        inline: position,
+        block: position,
+      });
+    }
+}
+
+  /**
+   * Send acceleration request
+   */
+  accelerate() {
+    if (this.accelerationSubscription) {
+      this.accelerationSubscription.unsubscribe();
+    }
+    this.accelerationSubscription = this.apiService.accelerate$(
+      this.tx.txid,
+      this.userBid
+    ).subscribe({
+      next: () => {
+        this.showSuccess = true;
+        this.scrollToPreviewWithTimeout('successAlert', 'center');
+        this.estimateSubscription.unsubscribe();
+      },
+      error: (response) => {
+        this.error = response.error;
+        this.scrollToPreviewWithTimeout('mempoolError', 'center');
+      }
+    });
+  }
+
+  isLoggedIn() {
+    const auth = this.storageService.getAuth();
+    return auth !== null;
+  }
+
+  @HostListener('window:resize', ['$event'])
+  onResize(): void {
+    this.isMobile = window.innerWidth <= 767.98;
+  }
+}

frontend/src/app/components/address/address-preview.component.ts

@@ -9,6 +9,7 @@ import { AudioService } from '../../services/audio.service';
 import { ApiService } from '../../services/api.service';
 import { of, merge, Subscription, Observable } from 'rxjs';
 import { SeoService } from '../../services/seo.service';
+import { seoDescriptionNetwork } from '../../shared/common.utils';
 import { AddressInformation } from '../../interfaces/node-api.interface';
 
 @Component({
@@ -68,6 +69,7 @@ export class AddressPreviewComponent implements OnInit, OnDestroy {
             this.addressString = this.addressString.toLowerCase();
           }
           this.seoService.setTitle($localize`:@@address.component.browser-title:Address: ${this.addressString}:INTERPOLATION:`);
+          this.seoService.setDescription($localize`:@@meta.description.bitcoin.address:See mempool transactions, confirmed transactions, balance, and more for ${this.stateService.network==='liquid'||this.stateService.network==='liquidtestnet'?'Liquid':'Bitcoin'}${seoDescriptionNetwork(this.stateService.network)} address ${this.addressString}:INTERPOLATION:.`);
 
           return (this.addressString.match(/04[a-fA-F0-9]{128}|(02|03)[a-fA-F0-9]{64}/)
               ? this.electrsApiService.getPubKeyAddress$(this.addressString)

frontend/src/app/components/address/address.component.ts

@@ -9,6 +9,7 @@ import { AudioService } from '../../services/audio.service';
 import { ApiService } from '../../services/api.service';
 import { of, merge, Subscription, Observable } from 'rxjs';
 import { SeoService } from '../../services/seo.service';
+import { seoDescriptionNetwork } from '../../shared/common.utils';
 import { AddressInformation } from '../../interfaces/node-api.interface';
 
 @Component({
@@ -76,6 +77,7 @@ export class AddressComponent implements OnInit, OnDestroy {
             this.addressString = this.addressString.toLowerCase();
           }
           this.seoService.setTitle($localize`:@@address.component.browser-title:Address: ${this.addressString}:INTERPOLATION:`);
+          this.seoService.setDescription($localize`:@@meta.description.bitcoin.address:See mempool transactions, confirmed transactions, balance, and more for ${this.stateService.network==='liquid'||this.stateService.network==='liquidtestnet'?'Liquid':'Bitcoin'}${seoDescriptionNetwork(this.stateService.network)} address ${this.addressString}:INTERPOLATION:.`);
 
           return merge(
             of(true),
@@ -172,6 +174,11 @@ export class AddressComponent implements OnInit, OnDestroy {
         this.addTransaction(tx);
       });
 
+    this.stateService.mempoolRemovedTransactions$
+      .subscribe(tx => {
+        this.removeTransaction(tx);
+      });
+
     this.stateService.blockTransactions$
       .subscribe((transaction) => {
         const tx = this.transactions.find((t) => t.txid === transaction.txid);
@@ -220,6 +227,30 @@ export class AddressComponent implements OnInit, OnDestroy {
     return true;
   }
 
+  removeTransaction(transaction: Transaction): boolean {
+    const index = this.transactions.findIndex(((tx) => tx.txid === transaction.txid));
+    if (index === -1) {
+      return false;
+    }
+
+    this.transactions.splice(index, 1);
+    this.transactions = this.transactions.slice();
+    this.txCount--;
+
+    transaction.vin.forEach((vin) => {
+      if (vin?.prevout?.scriptpubkey_address === this.address.address) {
+        this.sent -= vin.prevout.value;
+      }
+    });
+    transaction.vout.forEach((vout) => {
+      if (vout?.scriptpubkey_address === this.address.address) {
+        this.received -= vout.value;
+      }
+    });
+
+    return true;
+  }
+
   loadMore() {
     if (this.isLoadingTransactions || !this.totalConfirmedTxCount || this.loadedConfirmedTxCount >= this.totalConfirmedTxCount) {
       return;

frontend/src/app/components/assets/assets-nav/assets-nav.component.ts

@@ -40,6 +40,7 @@ export class AssetsNavComponent implements OnInit {
 
   ngOnInit(): void {
     this.seoService.setTitle($localize`:@@ee8f8008bae6ce3a49840c4e1d39b4af23d4c263:Assets`);
+    this.seoService.setDescription($localize`:@@meta.description.liquid.assets:Explore all the assets issued on the Liquid network like L-BTC, L-CAD, USDT, and more.`);
     this.typeaheadSearchFn = this.typeaheadSearch;
 
     this.searchForm = this.formBuilder.group({

frontend/src/app/components/block-fee-rates-graph/block-fee-rates-graph.component.ts

@@ -64,6 +64,7 @@ export class BlockFeeRatesGraphComponent implements OnInit {
 
   ngOnInit(): void {
     this.seoService.setTitle($localize`:@@ed8e33059967f554ff06b4f5b6049c465b92d9b3:Block Fee Rates`);
+    this.seoService.setDescription($localize`:@@meta.description.bitcoin.graphs.block-fee-rates:See Bitcoin feerates visualized over time, including minimum and maximum feerates per block along with feerates at various percentiles.`);
     this.miningWindowPreference = this.miningService.getDefaultTimespan('24h');
     this.radioGroupForm = this.formBuilder.group({ dateSpan: this.miningWindowPreference });
     this.radioGroupForm.controls.dateSpan.setValue(this.miningWindowPreference);

frontend/src/app/components/block-fees-graph/block-fees-graph.component.ts

@@ -65,6 +65,7 @@ export class BlockFeesGraphComponent implements OnInit {
 
   ngOnInit(): void {
     this.seoService.setTitle($localize`:@@6c453b11fd7bd159ae30bc381f367bc736d86909:Block Fees`);
+    this.seoService.setDescription($localize`:@@meta.description.bitcoin.graphs.block-fees:See the average mining fees earned per Bitcoin block visualized in BTC and USD over time.`);
     this.miningWindowPreference = this.miningService.getDefaultTimespan('1m');
     this.radioGroupForm = this.formBuilder.group({ dateSpan: this.miningWindowPreference });
     this.radioGroupForm.controls.dateSpan.setValue(this.miningWindowPreference);
@@ -192,7 +193,7 @@ export class BlockFeesGraphComponent implements OnInit {
           {
             name: 'Fees ' + this.currency,
             inactiveColor: 'rgb(110, 112, 121)',
-            textStyle: {  
+            textStyle: {
               color: 'white',
             },
             icon: 'roundRect',

frontend/src/app/components/block-health-graph/block-health-graph.component.ts

@@ -61,6 +61,7 @@ export class BlockHealthGraphComponent implements OnInit {
 
   ngOnInit(): void {
     this.seoService.setTitle($localize`:@@d7d5fcf50179ad70c938491c517efb82de2c8146:Block Health`);
+    this.seoService.setDescription($localize`:@@meta.description.bitcoin.graphs.block-health:See Bitcoin block health visualized over time. Block health is a measure of how many expected transactions were included in an actual mined block. Expected transactions are determined using Mempool's re-implementation of Bitcoin Core's transaction selection algorithm.`);
     this.miningWindowPreference = '24h';//this.miningService.getDefaultTimespan('24h');
     this.radioGroupForm = this.formBuilder.group({ dateSpan: this.miningWindowPreference });
     this.radioGroupForm.controls.dateSpan.setValue(this.miningWindowPreference);

frontend/src/app/components/block-overview-graph/block-overview-graph.component.ts

@@ -70,9 +70,11 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
     this.canvas.nativeElement.addEventListener('webglcontextlost', this.handleContextLost, false);
     this.canvas.nativeElement.addEventListener('webglcontextrestored', this.handleContextRestored, false);
     this.gl = this.canvas.nativeElement.getContext('webgl');
-    this.initCanvas();
 
-    this.resizeCanvas();
+    if (this.gl) {
+      this.initCanvas();
+      this.resizeCanvas();
+    }
   }
 
   ngOnChanges(changes): void {
@@ -195,10 +197,16 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
     cancelAnimationFrame(this.animationFrameRequest);
     this.animationFrameRequest = null;
     this.running = false;
+    this.gl = null;
   }
 
   handleContextRestored(event): void {
-    this.initCanvas();
+    if (this.canvas?.nativeElement) {
+      this.gl = this.canvas.nativeElement.getContext('webgl');
+      if (this.gl) {
+        this.initCanvas();
+      }
+    }
   }
 
   @HostListener('window:resize', ['$event'])
@@ -224,6 +232,9 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
   }
 
   compileShader(src, type): WebGLShader {
+    if (!this.gl) {
+      return;
+    }
     const shader = this.gl.createShader(type);
 
     this.gl.shaderSource(shader, src);
@@ -237,6 +248,9 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
   }
 
   buildShaderProgram(shaderInfo): WebGLProgram {
+    if (!this.gl) {
+      return;
+    }
     const program = this.gl.createProgram();
 
     shaderInfo.forEach((desc) => {
@@ -273,7 +287,7 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
       now = performance.now();
     }
     // skip re-render if there's no change to the scene
-    if (this.scene) {
+    if (this.scene && this.gl) {
       /* SET UP SHADER UNIFORMS */
       // screen dimensions
       this.gl.uniform2f(this.gl.getUniformLocation(this.shaderProgram, 'screenSize'), this.displayWidth, this.displayHeight);

frontend/src/app/components/block-rewards-graph/block-rewards-graph.component.ts

@@ -63,6 +63,7 @@ export class BlockRewardsGraphComponent implements OnInit {
 
   ngOnInit(): void {
     this.seoService.setTitle($localize`:@@8ba8fe810458280a83df7fdf4c614dfc1a826445:Block Rewards`);
+    this.seoService.setDescription($localize`:@@meta.description.bitcoin.graphs.block-rewards:See Bitcoin block rewards in BTC and USD visualized over time. Block rewards are the total funds miners earn from the block subsidy and fees.`);
     this.miningWindowPreference = this.miningService.getDefaultTimespan('3m');
     this.radioGroupForm = this.formBuilder.group({ dateSpan: this.miningWindowPreference });
     this.radioGroupForm.controls.dateSpan.setValue(this.miningWindowPreference);
@@ -191,7 +192,7 @@ export class BlockRewardsGraphComponent implements OnInit {
           {
             name: 'Rewards ' + this.currency,
             inactiveColor: 'rgb(110, 112, 121)',
-            textStyle: {  
+            textStyle: {
               color: 'white',
             },
             icon: 'roundRect',

frontend/src/app/components/block-sizes-weights-graph/block-sizes-weights-graph.component.ts

@@ -60,6 +60,7 @@ export class BlockSizesWeightsGraphComponent implements OnInit {
     let firstRun = true;
 
     this.seoService.setTitle($localize`:@@56fa1cd221491b6478998679cba2dc8d55ba330d:Block Sizes and Weights`);
+    this.seoService.setDescription($localize`:@@meta.description.bitcoin.graphs.block-sizes:See Bitcoin block sizes (MB) and block weights (weight units) visualized over time.`);
     this.miningWindowPreference = this.miningService.getDefaultTimespan('24h');
     this.radioGroupForm = this.formBuilder.group({ dateSpan: this.miningWindowPreference });
     this.radioGroupForm.controls.dateSpan.setValue(this.miningWindowPreference);

frontend/src/app/components/block/block-preview.component.ts

@@ -8,6 +8,7 @@ import { SeoService } from '../../services/seo.service';
 import { OpenGraphService } from '../../services/opengraph.service';
 import { BlockExtended, TransactionStripped } from '../../interfaces/node-api.interface';
 import { ApiService } from '../../services/api.service';
+import { seoDescriptionNetwork } from '../../shared/common.utils';
 import { BlockOverviewGraphComponent } from '../../components/block-overview-graph/block-overview-graph.component';
 
 @Component({
@@ -97,6 +98,11 @@ export class BlockPreviewComponent implements OnInit, OnDestroy {
         this.blockHeight = block.height;
 
         this.seoService.setTitle($localize`:@@block.component.browser-title:Block ${block.height}:BLOCK_HEIGHT:: ${block.id}:BLOCK_ID:`);
+        if( this.stateService.network === 'liquid' || this.stateService.network === 'liquidtestnet' ) {
+          this.seoService.setDescription($localize`:@@meta.description.liquid.block:See size, weight, fee range, included transactions, and more for Liquid${seoDescriptionNetwork(this.stateService.network)} block ${block.height}:BLOCK_HEIGHT: (${block.id}:BLOCK_ID:).`);
+        } else {
+          this.seoService.setDescription($localize`:@@meta.description.bitcoin.block:See size, weight, fee range, included transactions, audit (expected v actual), and more for Bitcoin${seoDescriptionNetwork(this.stateService.network)} block ${block.height}:BLOCK_HEIGHT: (${block.id}:BLOCK_ID:).`);
+        }
         this.isLoadingBlock = false;
         this.setBlockSubsidy();
         if (block?.extras?.reward !== undefined) {

frontend/src/app/components/block/block.component.ts

@@ -13,6 +13,7 @@ import { BlockAudit, BlockExtended, TransactionStripped } from '../../interfaces
 import { ApiService } from '../../services/api.service';
 import { BlockOverviewGraphComponent } from '../../components/block-overview-graph/block-overview-graph.component';
 import { detectWebGL } from '../../shared/graphs.utils';
+import { seoDescriptionNetwork } from '../../shared/common.utils';
 import { PriceService, Price } from '../../services/price.service';
 import { CacheService } from '../../services/cache.service';
 
@@ -165,7 +166,6 @@ export class BlockComponent implements OnInit, OnDestroy {
         this.page = 1;
         this.error = undefined;
         this.fees = undefined;
-        this.stateService.markBlock$.next({});
 
         if (history.state.data && history.state.data.blockHeight) {
           this.blockHeight = history.state.data.blockHeight;
@@ -175,6 +175,7 @@ export class BlockComponent implements OnInit, OnDestroy {
         let isBlockHeight = false;
         if (/^[0-9]+$/.test(blockHash)) {
           isBlockHeight = true;
+          this.stateService.markBlock$.next({ blockHeight: parseInt(blockHash, 10)});
         } else {
           this.blockHash = blockHash;
         }
@@ -201,6 +202,7 @@ export class BlockComponent implements OnInit, OnDestroy {
                   this.location.replaceState(
                     this.router.createUrlTree([(this.network ? '/' + this.network : '') + '/block/', hash]).toString()
                   );
+                  this.seoService.updateCanonical(this.location.path());
                   return this.apiService.getBlock$(hash).pipe(
                     catchError((err) => {
                       this.error = err;
@@ -261,6 +263,11 @@ export class BlockComponent implements OnInit, OnDestroy {
         this.setNextAndPreviousBlockLink();
 
         this.seoService.setTitle($localize`:@@block.component.browser-title:Block ${block.height}:BLOCK_HEIGHT:: ${block.id}:BLOCK_ID:`);
+        if( this.stateService.network === 'liquid' || this.stateService.network === 'liquidtestnet' ) {
+          this.seoService.setDescription($localize`:@@meta.description.liquid.block:See size, weight, fee range, included transactions, and more for Liquid${seoDescriptionNetwork(this.stateService.network)} block ${block.height}:BLOCK_HEIGHT: (${block.id}:BLOCK_ID:).`);
+        } else {
+          this.seoService.setDescription($localize`:@@meta.description.bitcoin.block:See size, weight, fee range, included transactions, audit (expected v actual), and more for Bitcoin${seoDescriptionNetwork(this.stateService.network)} block ${block.height}:BLOCK_HEIGHT: (${block.id}:BLOCK_ID:).`);
+        }
         this.isLoadingBlock = false;
         this.setBlockSubsidy();
         if (block?.extras?.reward !== undefined) {
@@ -325,7 +332,7 @@ export class BlockComponent implements OnInit, OnDestroy {
         ]);
       })
     )
-    .subscribe(([transactions, blockAudit]) => {      
+    .subscribe(([transactions, blockAudit]) => {
       if (transactions) {
         this.strippedTransactions = transactions;
       } else {
@@ -680,7 +687,7 @@ export class BlockComponent implements OnInit, OnDestroy {
       this.setAuditAvailable(false);
     }
   }
-  
+
   isAuditAvailableFromBlockHeight(blockHeight: number): boolean {
     if (!this.auditSupported) {
       return false;
@@ -729,4 +736,4 @@ export class BlockComponent implements OnInit, OnDestroy {
       this.block.canonical = block.id;
     }
   }
-}
+}

frontend/src/app/components/blockchain/blockchain.component.html

@@ -1,5 +1,5 @@
 <div class="text-center" class="blockchain-wrapper" [class.time-ltr]="timeLtr" [class.ltr-transition]="ltrTransitionEnabled" #container>
-  <div class="position-container" [ngClass]="network ? network : ''" [style.--divider-offset]="dividerOffset + 'px'" [style.--mempool-offset]="mempoolOffset + 'px'">
+  <div #positionContainer class="position-container" [ngClass]="network ? network : ''" [style]="positionStyle">
     <span>
       <div class="blocks-wrapper">
         <div class="scroll-spacer" *ngIf="minScrollWidth" [style.left]="minScrollWidth + 'px'"></div>

frontend/src/app/components/blockchain/blockchain.component.scss

@@ -26,15 +26,7 @@
   position: absolute;
   left: 0;
   top: 75px;
-  --divider-offset: 50vw;
-  --mempool-offset: 0px;
-  transform: translateX(calc(var(--divider-offset) + var(--mempool-offset)));
-}
-
-.blockchain-wrapper.time-ltr {
-  .position-container {
-    transform: translateX(calc(100vw - var(--divider-offset) - var(--mempool-offset)));
-  }
+  transform: translateX(1280px);
 }
 
 .black-background {

frontend/src/app/components/blockchain/blockchain.component.ts

@@ -1,4 +1,4 @@
-import { Component, OnInit, OnDestroy, ChangeDetectionStrategy, Input, Output, EventEmitter, HostListener, ChangeDetectorRef } from '@angular/core';
+import { Component, OnInit, OnDestroy, ChangeDetectionStrategy, Input, Output, EventEmitter, ChangeDetectorRef, OnChanges, SimpleChanges } from '@angular/core';
 import { firstValueFrom, Subscription } from 'rxjs';
 import { StateService } from '../../services/state.service';
 
@@ -8,12 +8,13 @@ import { StateService } from '../../services/state.service';
   styleUrls: ['./blockchain.component.scss'],
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
-export class BlockchainComponent implements OnInit, OnDestroy {
+export class BlockchainComponent implements OnInit, OnDestroy, OnChanges {
   @Input() pages: any[] = [];
   @Input() pageIndex: number;
   @Input() blocksPerPage: number = 8;
   @Input() minScrollWidth: number = 0;
   @Input() scrollableMempool: boolean = false;
+  @Input() containerWidth: number;
 
   @Output() mempoolOffsetChange: EventEmitter<number> = new EventEmitter();
 
@@ -26,8 +27,11 @@ export class BlockchainComponent implements OnInit, OnDestroy {
   loadingTip: boolean = true;
   connected: boolean = true;
 
-  dividerOffset: number = 0;
-  mempoolOffset: number = 0;
+  dividerOffset: number | null = null;
+  mempoolOffset: number | null = null;
+  positionStyle = {
+    transform: "translateX(1280px)",
+  };
 
   constructor(
     public stateService: StateService,
@@ -39,6 +43,7 @@ export class BlockchainComponent implements OnInit, OnDestroy {
     this.network = this.stateService.network;
     this.timeLtrSubscription = this.stateService.timeLtr.subscribe((ltr) => {
       this.timeLtr = !!ltr;
+      this.updateStyle();
     });
     this.connectionStateSubscription = this.stateService.connectionState$.subscribe(state => {
       this.connected = (state === 2);
@@ -62,44 +67,68 @@ export class BlockchainComponent implements OnInit, OnDestroy {
     const prevOffset = this.mempoolOffset;
     this.mempoolOffset = 0;
     this.mempoolOffsetChange.emit(0);
+    this.updateStyle();
     setTimeout(() => {
       this.ltrTransitionEnabled = true;
       this.flipping = true;
       this.stateService.timeLtr.next(!this.timeLtr);
+      this.cd.markForCheck();
       setTimeout(() => {
         this.ltrTransitionEnabled = false;
         this.flipping = false;
         this.mempoolOffset = prevOffset;
-        this.mempoolOffsetChange.emit(this.mempoolOffset);
+        this.mempoolOffsetChange.emit((this.mempoolOffset || 0));
+        this.updateStyle();
+        this.cd.markForCheck();
       },  1000);
     }, 0);
-    this.cd.markForCheck();
   }
 
   onMempoolWidthChange(width): void {
     if (this.flipping) {
       return;
     }
-    this.mempoolOffset = Math.max(0, width - this.dividerOffset);
-    this.cd.markForCheck();
+    this.mempoolOffset = Math.max(0, width - (this.dividerOffset || 0));
+    this.updateStyle();
     this.mempoolOffsetChange.emit(this.mempoolOffset);
   }
 
-  @HostListener('window:resize', ['$event'])
+  updateStyle(): void {
+    if (this.dividerOffset == null || this.mempoolOffset == null) {
+      return;
+    }
+    const oldTransform = this.positionStyle.transform;
+    this.positionStyle = this.timeLtr ? {
+      transform: `translateX(calc(100vw - ${this.dividerOffset + this.mempoolOffset}px)`,
+    } : {
+      transform: `translateX(${this.dividerOffset + this.mempoolOffset}px)`,
+    };
+    if (oldTransform !== this.positionStyle.transform) {
+      this.cd.detectChanges();
+    }
+  }
+
+  ngOnChanges(changes: SimpleChanges): void {
+    if (changes.containerWidth) {
+      this.onResize();
+    }
+  }
+
   onResize(): void {
-    if (window.innerWidth >= 768) {
+    const width = this.containerWidth || window.innerWidth;
+    if (width >= 768) {
       if (this.stateService.isLiquid()) {
         this.dividerOffset = 420;
       } else {
-        this.dividerOffset = window.innerWidth * 0.5;
+        this.dividerOffset = width * 0.5;
       }
     } else {
       if (this.stateService.isLiquid()) {
-        this.dividerOffset = window.innerWidth * 0.5;
+        this.dividerOffset = width * 0.5;
       } else {
-        this.dividerOffset = window.innerWidth * 0.95;
+        this.dividerOffset = width * 0.95;
       }
     }
-    this.cd.markForCheck();
+    this.updateStyle();
   }
 }

frontend/src/app/components/blocks-list/blocks-list.component.ts

@@ -5,6 +5,8 @@ import { BlockExtended } from '../../interfaces/node-api.interface';
 import { ApiService } from '../../services/api.service';
 import { StateService } from '../../services/state.service';
 import { WebsocketService } from '../../services/websocket.service';
+import { SeoService } from '../../services/seo.service';
+import { seoDescriptionNetwork } from '../../shared/common.utils';
 
 @Component({
   selector: 'app-blocks-list',
@@ -35,6 +37,7 @@ export class BlocksList implements OnInit {
     private websocketService: WebsocketService,
     public stateService: StateService,
     private cd: ChangeDetectorRef,
+    private seoService: SeoService,
   ) {
   }
 
@@ -50,6 +53,14 @@ export class BlocksList implements OnInit {
     this.skeletonLines = this.widget === true ? [...Array(6).keys()] : [...Array(15).keys()];
     this.paginationMaxSize = window.matchMedia('(max-width: 670px)').matches ? 3 : 5;
 
+    this.seoService.setTitle($localize`:@@meta.title.blocks-list:Blocks`);
+    if( this.stateService.network==='liquid'||this.stateService.network==='liquidtestnet' ) {
+      this.seoService.setDescription($localize`:@@meta.description.liquid.blocks:See the most recent Liquid${seoDescriptionNetwork(this.stateService.network)} blocks along with basic stats such as block height, block size, and more.`);
+    } else {
+      this.seoService.setDescription($localize`:@@meta.description.bitcoin.blocks:See the most recent Bitcoin${seoDescriptionNetwork(this.stateService.network)} blocks along with basic stats such as block height, block reward, block size, and more.`);
+    }
+
+
     this.blocks$ = combineLatest([
       this.fromHeightSubject.pipe(
         switchMap((fromBlockHeight) => {
@@ -129,4 +140,4 @@ export class BlocksList implements OnInit {
   isEllipsisActive(e): boolean {
     return (e.offsetWidth < e.scrollWidth);
   }
-}
+}

frontend/src/app/components/difficulty/difficulty.component.ts

@@ -194,7 +194,7 @@ export class DifficultyComponent implements OnInit {
 
   @HostListener('pointerdown', ['$event'])
   onPointerDown(event): void {
-    if (this.epochSvgElement.nativeElement?.contains(event.target)) {
+    if (this.epochSvgElement?.nativeElement?.contains(event.target)) {
       this.onPointerMove(event);
       event.preventDefault();
     }
@@ -202,7 +202,7 @@ export class DifficultyComponent implements OnInit {
 
   @HostListener('pointermove', ['$event'])
   onPointerMove(event): void {
-    if (this.epochSvgElement.nativeElement?.contains(event.target)) {
+    if (this.epochSvgElement?.nativeElement?.contains(event.target)) {
       this.tooltipPosition = { x: event.clientX, y: event.clientY };
       this.cd.markForCheck();
     }

frontend/src/app/components/fiat-selector/fiat-selector.component.html

@@ -1,5 +1,5 @@
 <div [formGroup]="fiatForm" class="text-small text-center">
-    <select formControlName="fiat" class="custom-select custom-select-sm form-control-secondary form-control mx-auto" style="width: 150px;" (change)="changeFiat()">
-        <option *ngFor="let currency of currencies" [value]="currency[1].code">{{ currency[1].name + " (" + currency[1].code + ")" }}</option>
+    <select formControlName="fiat" class="custom-select custom-select-sm form-control-secondary form-control mx-auto" style="width: 85px;" (change)="changeFiat()">
+        <option *ngFor="let currency of currencies" [value]="currency[1].code">{{ currency[1].code }}</option>
     </select>
 </div>

frontend/src/app/components/hashrate-chart/hashrate-chart.component.ts

@@ -12,6 +12,7 @@ import { MiningService } from '../../services/mining.service';
 import { download } from '../../shared/graphs.utils';
 import { ActivatedRoute } from '@angular/router';
 import { StateService } from '../../services/state.service';
+import { seoDescriptionNetwork } from '../../shared/common.utils';
 
 @Component({
   selector: 'app-hashrate-chart',
@@ -71,6 +72,7 @@ export class HashrateChartComponent implements OnInit {
       this.miningWindowPreference = '1y';
     } else {
       this.seoService.setTitle($localize`:@@3510fc6daa1d975f331e3a717bdf1a34efa06dff:Hashrate & Difficulty`);
+      this.seoService.setDescription($localize`:@@meta.description.bitcoin.graphs.hashrate:See hashrate and difficulty for the Bitcoin${seoDescriptionNetwork(this.network)} network visualized over time.`);
       this.miningWindowPreference = this.miningService.getDefaultTimespan('3m');
     }
     this.radioGroupForm = this.formBuilder.group({ dateSpan: this.miningWindowPreference });
@@ -256,7 +258,7 @@ export class HashrateChartComponent implements OnInit {
               let difficultyPowerOfTen = hashratePowerOfTen;
               let difficulty = tick.data[1];
               if (difficulty === null) {
-                difficultyString = `${tick.marker} ${tick.seriesName}: No data<br>`;  
+                difficultyString = `${tick.marker} ${tick.seriesName}: No data<br>`;
               } else {
                 if (this.isMobile()) {
                   difficultyPowerOfTen = selectPowerOfTen(tick.data[1]);

frontend/src/app/components/language-selector/language-selector.component.html

@@ -1,5 +1,5 @@
 <div [formGroup]="languageForm" class="text-small text-center">
-    <select formControlName="language" class="custom-select custom-select-sm form-control-secondary form-control mx-auto" style="width: 100px;" (change)="changeLanguage()">
+    <select formControlName="language" class="custom-select custom-select-sm form-control-secondary form-control mx-auto" style="width: 95px;" (change)="changeLanguage()">
         <option *ngFor="let lang of languages" [value]="lang.code">{{ lang.name }}</option>
     </select>
 </div>

frontend/src/app/components/master-page/master-page.component.html

@@ -1,6 +1,20 @@
 <ng-container *ngIf="{ val: network$ | async } as network">
-<header *ngIf="headerVisible">
+<header *ngIf="headerVisible" class="sticky-header">
+
   <nav class="navbar navbar-expand-md navbar-dark bg-dark">
+  <!-- Hamburger -->
+  <ng-container *ngIf="servicesEnabled">
+    <div *ngIf="user" class="profile_image_container" [class]="{'anon': !user.imageMd5}" (click)="hamburgerClick($event)">
+      <img *ngIf="user.imageMd5" [src]="'/api/v1/services/account/image/' + user.username + '?md5=' + user.imageMd5" class="profile_image">
+      <app-svg-images style="color: lightgrey; fill: lightgray" *ngIf="!user.imageMd5" name="anon"></app-svg-images>
+    </div>
+    <div *ngIf="false && user === null" class="profile_image_container" (click)="hamburgerClick($event)">
+      <app-svg-images name="hamburger" height="40"></app-svg-images>
+    </div>
+    <!-- Empty placeholder -->
+    <div *ngIf="user === undefined" class="profile_image_container"></div>
+  </ng-container>
+
   <a class="navbar-brand" [ngClass]="{'dual-logos': subdomain}" [routerLink]="['/' | relativeUrl]" (click)="brandClick($event)">
   <ng-template [ngIf]="subdomain">
     <div class="subdomain_container">
@@ -62,11 +76,19 @@
 </nav>
 </header>
 
-<app-testnet-alert *ngIf="network.val === 'testnet' || network.val === 'signet'"></app-testnet-alert>
+<div class="d-flex" style="overflow: clip">
+  <app-menu *ngIf="servicesEnabled" [navOpen]="menuOpen" (loggedOut)="onLoggedOut()" (menuToggled)="menuToggled($event)"></app-menu>
 
-<main>
-  <router-outlet></router-outlet>
-</main>
+  <div class="flex-grow-1 d-flex flex-column">
+    <app-testnet-alert *ngIf="network.val === 'testnet' || network.val === 'signet'"></app-testnet-alert>
+
+    <main style="min-width: 375px" [style]="menuOpen ? 'max-width: calc(100vw - 225px)' : 'max-width: 100vw'">
+      <router-outlet></router-outlet>
+    </main>
+
+    <div class="flex-grow-1"></div>
+    <app-global-footer *ngIf="footerVisible"></app-global-footer>
+  </div>
+</div>
 
-<app-global-footer *ngIf="footerVisible"></app-global-footer>
 </ng-container>

frontend/src/app/components/master-page/master-page.component.scss

@@ -1,3 +1,11 @@
+.sticky-header {
+  position: sticky;
+  position: -webkit-sticky;
+  top: 0;
+  width: 100%;
+  z-index: 100;
+}
+
 li.nav-item.active {
   background-color: #653b9c;
 }
@@ -86,7 +94,6 @@ li.nav-item {
 
 .navbar-brand {
   position: relative;
-  height: 65px;
 }
 
 .navbar-brand.dual-logos {
@@ -102,7 +109,7 @@ nav {
 
 .connection-badge {
   position: absolute;
-  top: 22px;
+  top: 12px;
   width: 100%;
 }
 
@@ -209,4 +216,26 @@ nav {
     margin-left: 5px;
     margin-right: 0px;
   }
+}
+
+.profile_image_container {
+  width: 35px;
+  margin-right: 15px;
+  text-align: center;
+  align-self: center;
+  cursor: pointer;
+  &.anon {
+    border: 1.5px solid lightgrey;
+    color: lightgrey;
+    border-radius: 5px;
+  }
+}
+.profile_image {
+  height: 35px;
+  border-radius: 5px;
+}
+
+main {
+  transition: 0.2s;
+  transition-property: max-width;
 }

frontend/src/app/components/master-page/master-page.component.ts

@@ -1,9 +1,13 @@
-import { Component, OnInit, Input } from '@angular/core';
+import { Component, OnInit, Input, ViewChild } from '@angular/core';
+import { Router } from '@angular/router';
 import { Env, StateService } from '../../services/state.service';
 import { Observable, merge, of } from 'rxjs';
 import { LanguageService } from '../../services/language.service';
 import { EnterpriseService } from '../../services/enterprise.service';
 import { NavigationService } from '../../services/navigation.service';
+import { MenuComponent } from '../menu/menu.component';
+import { StorageService } from '../../services/storage.service';
+import { ApiService } from '../../services/api.service';
 
 @Component({
   selector: 'app-master-page',
@@ -25,12 +29,21 @@ export class MasterPageComponent implements OnInit {
   networkPaths: { [network: string]: string };
   networkPaths$: Observable<Record<string, string>>;
   footerVisible = true;
+  user: any = undefined;
+  servicesEnabled = false;
+  menuOpen = false;
+
+  @ViewChild(MenuComponent)
+  public menuComponent!: MenuComponent;
 
   constructor(
     public stateService: StateService,
     private languageService: LanguageService,
     private enterpriseService: EnterpriseService,
     private navigationService: NavigationService,
+    private storageService: StorageService,
+    private apiService: ApiService,
+    private router: Router,
   ) { }
 
   ngOnInit(): void {
@@ -51,17 +64,47 @@ export class MasterPageComponent implements OnInit {
         this.footerVisible = this.footerVisibleOverride;
       }
     });
+    
+    this.servicesEnabled = this.officialMempoolSpace && this.stateService.env.ACCELERATOR === true && this.stateService.network === '';
+    this.refreshAuth();
+
+    const isServicesPage = this.router.url.includes('/services/');
+    this.menuOpen = isServicesPage && !this.isSmallScreen();
   }
 
   collapse(): void {
     this.navCollapsed = !this.navCollapsed;
   }
 
+  isSmallScreen() {
+    return window.innerWidth <= 767.98;
+  }
+
   onResize(): void {
-    this.isMobile = window.innerWidth <= 767.98;
+    this.isMobile = this.isSmallScreen();
   }
 
   brandClick(e): void {
     this.stateService.resetScroll$.next(true);
   }
+
+  onLoggedOut(): void {
+    this.refreshAuth();
+  }
+
+  refreshAuth(): void {
+    this.user = this.storageService.getAuth()?.user ?? null;
+  }
+
+  hamburgerClick(event): void {
+    if (this.menuComponent) {
+      this.menuComponent.hamburgerClick();
+      this.menuOpen = this.menuComponent.navOpen;
+      event.stopPropagation();
+    }
+  }
+
+  menuToggled(isOpen: boolean): void {
+    this.menuOpen = isOpen;
+  }
 }

frontend/src/app/components/mempool-block/mempool-block.component.ts

@@ -5,6 +5,7 @@ import { switchMap, map, tap, filter } from 'rxjs/operators';
 import { MempoolBlock, TransactionStripped } from '../../interfaces/websocket.interface';
 import { Observable, BehaviorSubject } from 'rxjs';
 import { SeoService } from '../../services/seo.service';
+import { seoDescriptionNetwork } from '../../shared/common.utils';
 import { WebsocketService } from '../../services/websocket.service';
 
 @Component({
@@ -54,6 +55,7 @@ export class MempoolBlockComponent implements OnInit, OnDestroy {
                 const ordinal = this.getOrdinal(mempoolBlocks[this.mempoolBlockIndex]);
                 this.ordinal$.next(ordinal);
                 this.seoService.setTitle(ordinal);
+                this.seoService.setDescription($localize`:@@meta.description.mempool-block:See stats for ${this.stateService.network==='liquid'||this.stateService.network==='liquidtestnet'?'Liquid':'Bitcoin'}${seoDescriptionNetwork(this.stateService.network)} transactions in the mempool: fee range, aggregate size, and more. Mempool blocks are updated in real-time as the network receives new transactions.`);
                 mempoolBlocks[this.mempoolBlockIndex].isStack = mempoolBlocks[this.mempoolBlockIndex].blockVSize > this.stateService.blockVSize;
                 return mempoolBlocks[this.mempoolBlockIndex];
               })

frontend/src/app/components/mempool-blocks/mempool-blocks.component.ts

@@ -31,6 +31,7 @@ export class MempoolBlocksComponent implements OnInit, OnChanges, OnDestroy {
   @Input() spotlight: number = 0;
   @Input() getHref?: (index) => string = (index) => `/mempool-block/${index}`;
   @Input() allBlocks: boolean = false;
+  @Input() forceRtl: boolean = false;
 
   mempoolWidth: number = 0;
   @Output() widthChange: EventEmitter<number> = new EventEmitter();
@@ -96,13 +97,17 @@ export class MempoolBlocksComponent implements OnInit, OnChanges, OnDestroy {
   ngOnInit() {
     this.chainTip = this.stateService.latestBlockHeight;
 
+    const width = this.containerOffset + (this.stateService.env.MEMPOOL_BLOCKS_AMOUNT) * this.blockOffset;
+    this.mempoolWidth = width;
+    this.widthChange.emit(this.mempoolWidth);
+
     if (['', 'testnet', 'signet'].includes(this.stateService.network)) {
       this.enabledMiningInfoIfNeeded(this.location.path());
       this.location.onUrlChange((url) => this.enabledMiningInfoIfNeeded(url));
     }
 
     this.timeLtrSubscription = this.stateService.timeLtr.subscribe((ltr) => {
-      this.timeLtr = !!ltr;
+      this.timeLtr = !this.forceRtl && !!ltr;
       this.cd.markForCheck();
     });
 
@@ -114,11 +119,6 @@ export class MempoolBlocksComponent implements OnInit, OnChanges, OnDestroy {
     });
     this.reduceEmptyBlocksToFitScreen(this.mempoolEmptyBlocks);
 
-    this.mempoolBlocks.map(() => {
-      this.updateMempoolBlockStyles();
-      this.calculateTransactionPosition();
-    });
-    this.reduceMempoolBlocksToFitScreen(this.mempoolBlocks);
     this.isTabHiddenSubscription = this.stateService.isTabHidden$.subscribe((tabHidden) => this.tabHidden = tabHidden);
     this.loadingBlocks$ = combineLatest([
       this.stateService.isLoadingWebSocket$,
@@ -165,11 +165,11 @@ export class MempoolBlocksComponent implements OnInit, OnChanges, OnDestroy {
           return this.mempoolBlocks;
         }),
         tap(() => {
-          this.cd.markForCheck();
           const width = this.containerOffset + this.mempoolBlocks.length * this.blockOffset;
           if (this.mempoolWidth !== width) {
             this.mempoolWidth = width;
             this.widthChange.emit(this.mempoolWidth);
+            this.cd.markForCheck();
           }
         })
       );
@@ -206,21 +206,26 @@ export class MempoolBlocksComponent implements OnInit, OnChanges, OnDestroy {
         if (!block) {
           return;
         }
+
+        const isNewBlock = block.height > this.chainTip;
+
         if (this.chainTip === -1) {
           this.animateEntry = block.height === this.stateService.latestBlockHeight;
         } else {
-          this.animateEntry = block.height > this.chainTip;
+          this.animateEntry = isNewBlock;
         }
 
         this.chainTip = this.stateService.latestBlockHeight;
-        if ((block?.extras?.similarity == null || block?.extras?.similarity > 0.5) && !this.tabHidden) {
+        if (isNewBlock && (block?.extras?.similarity == null || block?.extras?.similarity > 0.5) && !this.tabHidden) {
           this.blockIndex++;
         }
+        this.cd.markForCheck();
       });
 
     this.chainTipSubscription = this.stateService.chainTip$.subscribe((height) => {
       if (this.chainTip === -1) {
         this.chainTip = height;
+        this.cd.markForCheck();
       }
     });
 
@@ -258,6 +263,7 @@ export class MempoolBlocksComponent implements OnInit, OnChanges, OnDestroy {
       this.blockPadding = 0.24 * this.blockWidth;
       this.containerOffset = 0.32 * this.blockWidth;
       this.blockOffset = this.blockWidth + this.blockPadding;
+      this.cd.markForCheck();
     }
   }
 
@@ -276,6 +282,7 @@ export class MempoolBlocksComponent implements OnInit, OnChanges, OnDestroy {
   onResize(): void {
     this.animateEntry = false;
     this.reduceEmptyBlocksToFitScreen(this.mempoolEmptyBlocks);
+    this.cd.markForCheck();
   }
 
   trackByFn(index: number, block: MempoolBlock) {
@@ -283,7 +290,7 @@ export class MempoolBlocksComponent implements OnInit, OnChanges, OnDestroy {
   }
 
   reduceEmptyBlocksToFitScreen(blocks: MempoolBlock[]): MempoolBlock[] {
-    const innerWidth = this.stateService.env.BASE_MODULE !== 'liquid' && window.innerWidth <= 767.98 ? window.innerWidth : window.innerWidth / 2;
+    const innerWidth = this.containerWidth || (this.stateService.env.BASE_MODULE !== 'liquid' && window.innerWidth <= 767.98 ? window.innerWidth : window.innerWidth / 2);
     let blocksAmount = this.stateService.env.MEMPOOL_BLOCKS_AMOUNT;
     if (!this.allBlocks) {
       blocksAmount = Math.min(this.stateService.env.MEMPOOL_BLOCKS_AMOUNT, Math.floor(innerWidth / (this.blockWidth + this.blockPadding)));
@@ -306,7 +313,7 @@ export class MempoolBlocksComponent implements OnInit, OnChanges, OnDestroy {
   }
 
   reduceMempoolBlocksToFitScreen(blocks: MempoolBlock[]): MempoolBlock[] {
-    const innerWidth = this.stateService.env.BASE_MODULE !== 'liquid' && window.innerWidth <= 767.98 ? window.innerWidth : window.innerWidth / 2;
+    const innerWidth = this.containerWidth || (this.stateService.env.BASE_MODULE !== 'liquid' && window.innerWidth <= 767.98 ? window.innerWidth : window.innerWidth / 2);
     let blocksAmount = this.stateService.env.MEMPOOL_BLOCKS_AMOUNT;
     if (this.count) {
       blocksAmount = 8;
@@ -316,7 +323,7 @@ export class MempoolBlocksComponent implements OnInit, OnChanges, OnDestroy {
     while (blocks.length > blocksAmount) {
       const block = blocks.pop();
       if (!this.count) {
-        const lastBlock = blocks[0];
+        const lastBlock = blocks[blocks.length - 1];
         lastBlock.blockSize += block.blockSize;
         lastBlock.blockVSize += block.blockVSize;
         lastBlock.nTx += block.nTx;
@@ -327,7 +334,7 @@ export class MempoolBlocksComponent implements OnInit, OnChanges, OnDestroy {
       }
     }
     if (blocks.length) {
-      blocks[0].isStack = blocks[0].blockVSize > this.stateService.blockVSize;
+      blocks[blocks.length - 1].isStack = blocks[blocks.length - 1].blockVSize > this.stateService.blockVSize;
     }
     return blocks;
   }

frontend/src/app/components/mempool-graph/mempool-graph.component.ts

@@ -1,6 +1,7 @@
 import { Component, OnInit, Input, Inject, LOCALE_ID, ChangeDetectionStrategy, OnChanges } from '@angular/core';
 import { VbytesPipe } from '../../shared/pipes/bytes-pipe/vbytes.pipe';
 import { WuBytesPipe } from '../../shared/pipes/bytes-pipe/wubytes.pipe';
+import { AmountShortenerPipe } from '../../shared/pipes/amount-shortener.pipe';
 import { formatNumber } from '@angular/common';
 import { OptimizedMempoolStats } from '../../interfaces/node-api.interface';
 import { StateService } from '../../services/state.service';
@@ -26,6 +27,7 @@ export class MempoolGraphComponent implements OnInit, OnChanges {
   @Input() data: any[];
   @Input() filterSize = 100000;
   @Input() limitFilterFee = 1;
+  @Input() hideCount: boolean = false;
   @Input() height: number | string = 200;
   @Input() top: number | string = 20;
   @Input() right: number | string = 10;
@@ -50,10 +52,13 @@ export class MempoolGraphComponent implements OnInit, OnChanges {
   inverted: boolean;
   chartInstance: any = undefined;
   weightMode: boolean = false;
+  isWidget: boolean = false;
+  showCount: boolean = true;
 
   constructor(
     private vbytesPipe: VbytesPipe,
     private wubytesPipe: WuBytesPipe,
+    private amountShortenerPipe: AmountShortenerPipe,
     private stateService: StateService,
     private storageService: StorageService,
     @Inject(LOCALE_ID) private locale: string,
@@ -62,12 +67,16 @@ export class MempoolGraphComponent implements OnInit, OnChanges {
   ngOnInit(): void {
     this.isLoading = true;
     this.inverted = this.storageService.getValue('inverted-graph') === 'true';
+    this.isWidget = this.template === 'widget';
+    this.showCount = !this.isWidget && !this.hideCount;
   }
 
-  ngOnChanges() {
+  ngOnChanges(changes) {
     if (!this.data) {
       return;
     }
+    this.isWidget = this.template === 'widget';
+    this.showCount = !this.isWidget && !this.hideCount;
     this.windowPreference = this.windowPreferenceOverride ? this.windowPreferenceOverride : this.storageService.getValue('graphWindowPreference');
     this.mempoolVsizeFeesData = this.handleNewMempoolData(this.data.concat([]));
     this.mountFeeChart();
@@ -96,10 +105,12 @@ export class MempoolGraphComponent implements OnInit, OnChanges {
     mempoolStats.reverse();
     const labels = mempoolStats.map(stats => stats.added);
     const finalArrayVByte = this.generateArray(mempoolStats);
+    const finalArrayCount = this.generateCountArray(mempoolStats);
 
     return {
       labels: labels,
-      series: finalArrayVByte
+      series: finalArrayVByte,
+      countSeries: finalArrayCount,
     };
   }
 
@@ -124,9 +135,13 @@ export class MempoolGraphComponent implements OnInit, OnChanges {
     return finalArray;
   }
 
+  generateCountArray(mempoolStats: OptimizedMempoolStats[]) {
+    return mempoolStats.filter(stats => stats.count > 0).map(stats => [stats.added * 1000, stats.count]);
+  }
+
   mountFeeChart() {
     this.orderLevels();
-    const { series } = this.mempoolVsizeFeesData;
+    const { series, countSeries } = this.mempoolVsizeFeesData;
 
     const seriesGraph = [];
     const newColors = [];
@@ -178,6 +193,29 @@ export class MempoolGraphComponent implements OnInit, OnChanges {
         });
       }
     }
+    if (this.showCount) {
+      newColors.push('white');
+      seriesGraph.push({
+        zlevel: 1,
+        yAxisIndex: 1,
+        name: 'count',
+        type: 'line',
+        stack: 'count',
+        smooth: false,
+        markPoint: false,
+        lineStyle: {
+          width: 2,
+          opacity: 1,
+        },
+        symbol: 'none',
+        silent: true,
+        areaStyle: {
+          color: null,
+          opacity: 0,
+        },
+        data: countSeries,
+      });
+    }
 
     this.mempoolVsizeFeesOptions = {
       series: this.inverted ? [...seriesGraph].reverse() : seriesGraph,
@@ -201,7 +239,11 @@ export class MempoolGraphComponent implements OnInit, OnChanges {
           label: {
             formatter: (params: any) => {
               if (params.axisDimension === 'y') {
-                return this.vbytesPipe.transform(params.value, 2, 'vB', 'MvB', true)
+                if (params.axisIndex === 0) {
+                  return this.vbytesPipe.transform(params.value, 2, 'vB', 'MvB', true);
+                } else {
+                  return this.amountShortenerPipe.transform(params.value, 2, undefined, true);
+                }
               } else {
                 return formatterXAxis(this.locale, this.windowPreference, params.value);
               }
@@ -214,7 +256,11 @@ export class MempoolGraphComponent implements OnInit, OnChanges {
           const itemFormatted = [];
           let totalParcial = 0;
           let progressPercentageText = '';
-          const items = this.inverted ? [...params].reverse() : params;
+          let countItem;
+          let items = this.inverted ? [...params].reverse() : params;
+          if (items[items.length - 1].seriesName === 'count') {
+            countItem = items.pop();
+          }
           items.map((item: any, index: number) => {
             totalParcial += item.value[1];
             const progressPercentage = (item.value[1] / totalValue) * 100;
@@ -276,6 +322,7 @@ export class MempoolGraphComponent implements OnInit, OnChanges {
             </tr>`);
           });
           const classActive = (this.template === 'advanced') ? 'fees-wrapper-tooltip-chart-advanced' : '';
+          const titleCount = $localize`Count`;
           const titleRange = $localize`Range`;
           const titleSize = $localize`:@@7faaaa08f56427999f3be41df1093ce4089bbd75:Size`;
           const titleSum = $localize`Sum`;
@@ -286,6 +333,25 @@ export class MempoolGraphComponent implements OnInit, OnChanges {
                 ${this.vbytesPipe.transform(totalValue, 2, 'vB', 'MvB', false)}
               </span>
             </div>
+            ` +
+              (this.showCount && countItem ? `
+                <table class="count">
+                  <tbody>
+                    <tr class="item">
+                      <td class="indicator-container">
+                        <span class="indicator" style="background-color: white"></span>
+                        <span>
+                          ${titleCount}
+                        </span>
+                      </td>
+                      <td style="text-align: right;">
+                        <span>${this.amountShortenerPipe.transform(countItem.value[1], 2, undefined, true)}</span>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              ` : '')
+            + `
             <table>
               <thead>
                 <tr>
@@ -305,12 +371,12 @@ export class MempoolGraphComponent implements OnInit, OnChanges {
           </div>`;
         }
       },
-      dataZoom: (this.template === 'widget' && this.isMobile()) ? null : [{
+      dataZoom: (this.isWidget && this.isMobile()) ? null : [{
         type: 'inside',
         realtime: true,
-        zoomLock: (this.template === 'widget') ? true : false,
+        zoomLock: (this.isWidget) ? true : false,
         zoomOnMouseWheel: (this.template === 'advanced') ? true : false,
-        moveOnMouseMove: (this.template === 'widget') ? true : false,
+        moveOnMouseMove: (this.isWidget) ? true : false,
         maxSpan: 100,
         minSpan: 10,
       }, {
@@ -339,7 +405,7 @@ export class MempoolGraphComponent implements OnInit, OnChanges {
       },
       xAxis: [
         {
-          name: this.template === 'widget' ? '' : formatterXAxisLabel(this.locale, this.windowPreference),
+          name: this.isWidget ? '' : formatterXAxisLabel(this.locale, this.windowPreference),
           nameLocation: 'middle',
           nameTextStyle: {
             padding: [20, 0, 0, 0],
@@ -357,7 +423,7 @@ export class MempoolGraphComponent implements OnInit, OnChanges {
           },
         }
       ],
-      yAxis: {
+      yAxis: [{
         type: 'value',
         axisLine: { onZero: false },
         axisLabel: {
@@ -371,7 +437,17 @@ export class MempoolGraphComponent implements OnInit, OnChanges {
             opacity: 0.25,
           }
         }
-      },
+      }, this.showCount ? {
+        type: 'value',
+        position: 'right',
+        axisLine: { onZero: false },
+        axisLabel: {
+          formatter: (value: number) => (`${this.amountShortenerPipe.transform(value, 2, undefined, true)}`),
+        },
+        splitLine: {
+          show: false,
+        }
+      } : null],
     };
   }
 

frontend/src/app/components/menu/menu.component.html

@@ -0,0 +1,31 @@
+<div class="sidenav menu-click" [class]="navOpen ? 'open': ''">
+  <div class="d-flex menu-click">
+
+    <nav class="scrollable menu-click">
+      <span *ngIf="userAuth" class="menu-click">
+        <strong class="menu-click">@ {{ userAuth.user.username }}</strong>
+      </span>
+      <a *ngIf="!userAuth" class="d-flex justify-content-center align-items-center nav-link m-0  menu-click" routerLink="/login" role="tab" (click)="onLinkClick('/login')">
+        <fa-icon class="menu-click" [icon]="['fas', 'user-circle']" [fixedWidth]="true" style="font-size: 25px;margin-right: 15px;"></fa-icon>
+        <span class="menu-click" style="font-size: 20px;">Sign in</span>
+      </a>
+
+      <ng-container *ngIf="userMenuGroups$ | async as menuGroups">
+        <div class="menu-click" *ngFor="let group of menuGroups" style="height: max-content;">
+          <h6 class="d-flex justify-content-between align-items-center mt-4 mb-2 text-uppercase menu-click">
+            <span class="menu-click">{{ group.title }}</span>
+          </h6>
+          <ul class="nav flex-column menu-click" *ngFor="let item of group.items" (click)="onLinkClick(item.link)">
+            <li class="nav-item d-flex justify-content-start align-items-center menu-click">
+              <fa-icon class="menu-click" [icon]="['fas', item.faIcon]" [fixedWidth]="true"></fa-icon>
+              <button *ngIf="item.link === 'logout'" class="btn nav-link menu-click" role="tab" (click)="logout()">{{ item.title }}</button>
+              <a *ngIf="item.title !== 'Logout'" class="nav-link menu-click" [routerLink]="[item.link]" role="tab">{{ item.title }}</a>
+            </li>
+          </ul>
+        </div>
+      </ng-container>
+    </nav>
+
+  </div>
+
+</div>

frontend/src/app/components/menu/menu.component.scss

@@ -0,0 +1,48 @@
+.sidenav {
+  z-index: 1;
+  background-color: transparent;
+  width: 225px;
+  height: calc(100vh - 65px);
+  position: sticky;
+  top: 65px;
+  transition: 0.25s;
+  margin-left: -250px;
+  box-shadow: 5px 0px 30px 0px #000;
+  padding-bottom: 20px;
+}
+
+.scrollable {
+  overflow-x: hidden;
+  overflow-y: scroll;
+}
+
+.sidenav.open {
+  margin-left: 0px;
+  left: 0px;
+  display: block;
+}
+
+.sidenav a, button{
+  text-decoration: none;
+  color: lightgray;
+  margin-left: 20px;
+}
+.sidenav a:hover {
+  color: white;
+}
+.sidenav nav {
+  width: 100%;
+  height: calc(100vh - 65px);
+  background-color: #1d1f31;
+  padding-left: 20px;
+  padding-right: 20px;
+  padding-top: 20px;
+  padding-bottom: 20px;
+  @media (max-width: 991px) {
+    padding-bottom: 200px;
+  }
+}
+
+@media screen and (max-height: 450px) {
+  .sidenav a {font-size: 18px;}
+}

frontend/src/app/components/menu/menu.component.ts

@@ -0,0 +1,101 @@
+import { Component, OnInit, Input, Output, EventEmitter, HostListener, OnDestroy } from '@angular/core';
+import { Observable } from 'rxjs';
+import { ApiService } from '../../services/api.service';
+import { MenuGroup } from '../../interfaces/services.interface';
+import { StorageService } from '../../services/storage.service';
+import { Router, NavigationStart } from '@angular/router';
+import { StateService } from '../../services/state.service';
+
+@Component({
+  selector: 'app-menu',
+  templateUrl: './menu.component.html',
+  styleUrls: ['./menu.component.scss']
+})
+
+export class MenuComponent implements OnInit, OnDestroy {
+  @Input() navOpen: boolean = false;
+  @Output() loggedOut = new EventEmitter<boolean>();
+  @Output() menuToggled = new EventEmitter<boolean>();
+  
+  userMenuGroups$: Observable<MenuGroup[]> | undefined;
+  userAuth: any | undefined;
+  isServicesPage = false;
+
+  constructor(
+    private apiService: ApiService,
+    private storageService: StorageService,
+    private router: Router,
+    private stateService: StateService
+  ) {}
+
+  ngOnInit(): void {
+    this.userAuth = this.storageService.getAuth();
+    
+    if (this.stateService.env.GIT_COMMIT_HASH_MEMPOOL_SPACE) {
+      this.userMenuGroups$ = this.apiService.getUserMenuGroups$();
+    }
+
+    this.isServicesPage = this.router.url.includes('/services/');
+    this.router.events.subscribe((event) => {
+      if (event instanceof NavigationStart) {
+        if (!this.isServicesPage) {
+          this.toggleMenu(false);
+        }
+      }
+    });
+  }
+
+  toggleMenu(toggled: boolean) {
+    this.navOpen = toggled;
+    this.menuToggled.emit(toggled);
+  }
+
+  isSmallScreen() {
+    return window.innerWidth <= 767.98;
+  }
+
+  logout(): void {
+    this.apiService.logout$().subscribe(() => {
+      this.loggedOut.emit(true);
+      if (this.stateService.env.GIT_COMMIT_HASH_MEMPOOL_SPACE) {
+        this.userMenuGroups$ = this.apiService.getUserMenuGroups$();
+        this.router.navigateByUrl('/');
+      }
+    });
+  }
+
+  onLinkClick(link) {
+    if (!this.isServicesPage || this.isSmallScreen()) {
+      this.toggleMenu(false);
+    }
+    this.router.navigateByUrl(link);
+  }
+
+  hamburgerClick() {
+    this.toggleMenu(!this.navOpen);
+    this.stateService.menuOpen$.next(this.navOpen);
+  }
+
+  @HostListener('window:click', ['$event'])
+  onClick(event) {
+    const isServicesPageOnMobile = this.isServicesPage && this.isSmallScreen();
+    const cssClasses = event.target.className;
+
+    if (!cssClasses.indexOf) { // Click on chart or non html thingy, close the menu
+      if (!this.isServicesPage || isServicesPageOnMobile) {
+        this.toggleMenu(false);
+      }
+      return;
+    }
+
+    const isHamburger = cssClasses.indexOf('profile_image') !== -1;
+    const isMenu = cssClasses.indexOf('menu-click') !== -1;
+    if (!isHamburger && !isMenu && (!this.isServicesPage || isServicesPageOnMobile)) {
+      this.toggleMenu(false);
+    }
+  }
+
+  ngOnDestroy(): void {
+    this.stateService.menuOpen$.next(false);
+  }
+}

frontend/src/app/components/mining-dashboard/mining-dashboard.component.ts

@@ -18,6 +18,7 @@ export class MiningDashboardComponent implements OnInit, AfterViewInit {
     private router: Router
   ) {
     this.seoService.setTitle($localize`:@@a681a4e2011bb28157689dbaa387de0dd0aa0c11:Mining Dashboard`);
+    this.seoService.setDescription($localize`:@@meta.description.mining.dashboard:Get real-time Bitcoin mining stats like hashrate, difficulty adjustment, block rewards, pool dominance, and more.`);
   }
 
   ngOnInit(): void {
@@ -29,7 +30,7 @@ export class MiningDashboardComponent implements OnInit, AfterViewInit {
     this.router.events.subscribe((e: NavigationStart) => {
       if (e.type === EventType.NavigationStart) {
         if (e.url.indexOf('graphs') === -1) { // The mining dashboard and the graph component are part of the same module so we can't use ngAfterViewInit in graphs.component.ts to blur the input
-          this.stateService.focusSearchInputDesktop(); 
+          this.stateService.focusSearchInputDesktop();
         }
       }
     });

frontend/src/app/components/pool-ranking/pool-ranking.component.ts

@@ -56,6 +56,7 @@ export class PoolRankingComponent implements OnInit {
       this.miningWindowPreference = '1w';
     } else {
       this.seoService.setTitle($localize`:@@mining.mining-pools:Mining Pools`);
+      this.seoService.setDescription($localize`:@@meta.description.bitcoin.graphs.pool-ranking:See the top Bitcoin mining pools ranked by number of blocks mined, over your desired timeframe.`);
       this.miningWindowPreference = this.miningService.getDefaultTimespan('24h');
     }
     this.radioGroupForm = this.formBuilder.group({ dateSpan: this.miningWindowPreference });
@@ -116,7 +117,7 @@ export class PoolRankingComponent implements OnInit {
     } else if (this.widget) {
       poolShareThreshold = 1;
     }
-    
+
     const data: object[] = [];
     let totalShareOther = 0;
     let totalBlockOther = 0;

frontend/src/app/components/pool/pool-preview.component.ts

@@ -83,6 +83,7 @@ export class PoolPreviewComponent implements OnInit {
           }
 
           this.seoService.setTitle(poolStats.pool.name);
+          this.seoService.setDescription($localize`:@@meta.description.mining.pool:See mining pool stats for ${poolStats.pool.name}\: most recent mined blocks, hashrate over time, total block reward to date, known coinbase addresses, and more.`);
           let regexes = '"';
           for (const regex of poolStats.pool.regexes) {
             regexes += regex + '", "';

frontend/src/app/components/pool/pool.component.ts

@@ -83,6 +83,7 @@ export class PoolComponent implements OnInit {
         }),
         map((poolStats) => {
           this.seoService.setTitle(poolStats.pool.name);
+          this.seoService.setDescription($localize`:@@meta.description.mining.pool:See mining pool stats for ${poolStats.pool.name}\: most recent mined blocks, hashrate over time, total block reward to date, known coinbase addresses, and more.`);
           let regexes = '"';
           for (const regex of poolStats.pool.regexes) {
             regexes += regex + '", "';

frontend/src/app/components/privacy-policy/privacy-policy.component.ts

@@ -1,5 +1,6 @@
 import { Component } from '@angular/core';
 import { Env, StateService } from '../../services/state.service';
+import { SeoService } from '../../services/seo.service';
 
 @Component({
   selector: 'app-privacy-policy',
@@ -11,5 +12,11 @@ export class PrivacyPolicyComponent {
 
   constructor(
     private stateService: StateService,
+    private seoService: SeoService,
   ) { }
+
+  ngOnInit(): void {
+    this.seoService.setTitle('Privacy Policy');
+    this.seoService.setDescription('Trusted third parties are security holes, as are trusted first parties...you should only trust your own self-hosted instance of The Mempool Open Source Project®.');
+  }
 }

frontend/src/app/components/push-transaction/push-transaction.component.ts

@@ -1,6 +1,9 @@
 import { Component, OnInit } from '@angular/core';
 import { UntypedFormBuilder, UntypedFormGroup, Validators } from '@angular/forms';
 import { ApiService } from '../../services/api.service';
+import { StateService } from '../../services/state.service';
+import { SeoService } from '../../services/seo.service';
+import { seoDescriptionNetwork } from '../../shared/common.utils';
 
 @Component({
   selector: 'app-push-transaction',
@@ -16,12 +19,17 @@ export class PushTransactionComponent implements OnInit {
   constructor(
     private formBuilder: UntypedFormBuilder,
     private apiService: ApiService,
+    public stateService: StateService,
+    private seoService: SeoService,
   ) { }
 
   ngOnInit(): void {
     this.pushTxForm = this.formBuilder.group({
       txHash: ['', Validators.required],
     });
+
+    this.seoService.setTitle($localize`:@@meta.title.push-tx:Broadcast Transaction`);
+    this.seoService.setDescription($localize`:@@meta.description.push-tx:Broadcast a transaction to the ${this.stateService.network==='liquid'||this.stateService.network==='liquidtestnet'?'Liquid':'Bitcoin'}${seoDescriptionNetwork(this.stateService.network)} network using the transaction's hash.`);
   }
 
   postTx() {

frontend/src/app/components/rate-unit-selector/rate-unit-selector.component.html

@@ -1,5 +1,5 @@
 <div [formGroup]="rateUnitForm" class="text-small text-center">
-    <select formControlName="rateUnits" class="custom-select custom-select-sm form-control-secondary form-control mx-auto" style="width: 100px;" (change)="changeUnits()">
+    <select formControlName="rateUnits" class="custom-select custom-select-sm form-control-secondary form-control mx-auto" style="width: 95px;" (change)="changeUnits()">
         <option *ngFor="let unit of units" [value]="unit.name">{{ unit.label }}</option>
     </select>
 </div>

frontend/src/app/components/rbf-list/rbf-list.component.ts

@@ -6,6 +6,8 @@ import { WebsocketService } from '../../services/websocket.service';
 import { RbfTree } from '../../interfaces/node-api.interface';
 import { ApiService } from '../../services/api.service';
 import { StateService } from '../../services/state.service';
+import { SeoService } from '../../services/seo.service';
+import { seoDescriptionNetwork } from '../../shared/common.utils';
 
 @Component({
   selector: 'app-rbf-list',
@@ -26,6 +28,7 @@ export class RbfList implements OnInit, OnDestroy {
     private apiService: ApiService,
     public stateService: StateService,
     private websocketService: WebsocketService,
+    private seoService: SeoService,
   ) { }
 
   ngOnInit(): void {
@@ -51,9 +54,12 @@ export class RbfList implements OnInit, OnDestroy {
         this.isLoading = false;
       })
     );
+
+    this.seoService.setTitle($localize`:@@meta.title.rbf-list:RBF Replacements`);
+    this.seoService.setDescription($localize`:@@meta.description.rbf-list:See the most recent RBF replacements on the Bitcoin${seoDescriptionNetwork(this.stateService.network)} network, updated in real-time.`);
   }
 
   ngOnDestroy(): void {
     this.websocketService.stopTrackRbf();
   }
-}
+}

frontend/src/app/components/start/start.component.html

@@ -10,15 +10,26 @@
 
 <div *ngIf="countdown > 0" class="warning-label">{{ eventName }} in {{ countdown | number }} block{{ countdown === 1 ? '' : 's' }}!</div>
 
-<div class="blockchain-wrapper" [class.time-ltr]="timeLtr" [class.time-rtl]="!timeLtr">
+<div class="blockchain-wrapper" [class.time-ltr]="timeLtr" [class.time-rtl]="!timeLtr" #blockchainWrapper>
   <div id="blockchain-container" [dir]="timeLtr ? 'rtl' : 'ltr'" #blockchainContainer
+    [class.menu-open]="menuOpen"
+    [class.menu-closing]="menuSliding && !menuOpen"
+    [class.with-menu]="hasMenu"
     (mousedown)="onMouseDown($event)"
     (pointerdown)="onPointerDown($event)"
     (touchmove)="onTouchMove($event)"
     (dragstart)="onDragStart($event)"
     (scroll)="onScroll($event)"
   >
-    <app-blockchain [pageIndex]="pageIndex" [pages]="pages" [blocksPerPage]="blocksPerPage" [minScrollWidth]="minScrollWidth" [scrollableMempool]="true" (mempoolOffsetChange)="onMempoolOffsetChange($event)"></app-blockchain>
+    <app-blockchain
+      [containerWidth]="chainWidth"
+      [pageIndex]="pageIndex"
+      [pages]="pages"
+      [blocksPerPage]="blocksPerPage"
+      [minScrollWidth]="minScrollWidth"
+      [scrollableMempool]="true"
+      (mempoolOffsetChange)="onMempoolOffsetChange($event)"
+    ></app-blockchain>
   </div>
   <div class="reset-scroll" [class.hidden]="pageIndex === 0" (click)="resetScroll()">
     <fa-icon [icon]="['fas', 'circle-left']" [fixedWidth]="true"></fa-icon>

frontend/src/app/components/start/start.component.scss

@@ -6,6 +6,24 @@
   overflow-y: hidden;
   scrollbar-width: none;
   -ms-overflow-style: none;
+  width: 100%;
+
+  transform: translateX(0px);
+  transition: transform 0;
+
+  &.menu-open {
+    transform: translateX(-112.5px);
+    transition: transform 0.25s;
+  }
+
+  &.menu-closing {
+    transform: translateX(0px);
+    transition: transform 0.25s;
+  }
+
+  &.with-menu {
+    width: calc(100% + 120px);
+  }
 }
 
 #blockchain-container::-webkit-scrollbar {

frontend/src/app/components/start/start.component.ts

@@ -1,4 +1,4 @@
-import { Component, ElementRef, HostListener, OnInit, OnDestroy, ViewChild, Input, DoCheck } from '@angular/core';
+import { Component, ElementRef, HostListener, OnInit, OnDestroy, ViewChild, Input, ChangeDetectorRef, ChangeDetectionStrategy, AfterViewChecked } from '@angular/core';
 import { Subscription } from 'rxjs';
 import { MarkBlockState, StateService } from '../../services/state.service';
 import { specialBlocks } from '../../app.constants';
@@ -8,8 +8,9 @@ import { BlockExtended } from '../../interfaces/node-api.interface';
   selector: 'app-start',
   templateUrl: './start.component.html',
   styleUrls: ['./start.component.scss'],
+  changeDetection: ChangeDetectionStrategy.OnPush
 })
-export class StartComponent implements OnInit, OnDestroy, DoCheck {
+export class StartComponent implements OnInit, AfterViewChecked, OnDestroy {
   @Input() showLoadingIndicator = false;
 
   interval = 60;
@@ -23,13 +24,15 @@ export class StartComponent implements OnInit, OnDestroy, DoCheck {
   timeLtrSubscription: Subscription;
   timeLtr: boolean = this.stateService.timeLtr.value;
   chainTipSubscription: Subscription;
-  chainTip: number = -1;
+  chainTip: number = 100;
   tipIsSet: boolean = false;
   lastMark: MarkBlockState;
   markBlockSubscription: Subscription;
   blockCounterSubscription: Subscription;
+  @ViewChild('blockchainWrapper', { static: true }) blockchainWrapper: ElementRef;
   @ViewChild('blockchainContainer') blockchainContainer: ElementRef;
-  resetScrollSubscription: Subscription; 
+  resetScrollSubscription: Subscription;
+  menuSubscription: Subscription;
 
   isMobile: boolean = false;
   isiOS: boolean = false;
@@ -39,7 +42,8 @@ export class StartComponent implements OnInit, OnDestroy, DoCheck {
   blocksPerPage: number = 1;
   pageWidth: number;
   firstPageWidth: number;
-  minScrollWidth: number;
+  minScrollWidth: number = 40 + (155 * (8 + (2 * Math.ceil(window.innerWidth / 155))));
+  currentScrollWidth: number = null;
   pageIndex: number = 0;
   pages: any[] = [];
   pendingMark: number | null = null;
@@ -47,19 +51,24 @@ export class StartComponent implements OnInit, OnDestroy, DoCheck {
   lastUpdate: number = 0;
   lastMouseX: number;
   velocity: number = 0;
-  mempoolOffset: number = 0;
+  mempoolOffset: number = null;
+  mempoolWidth: number = 0;
+  scrollLeft: number = null;
+
+  chainWidth: number = window.innerWidth;
+  menuOpen: boolean = false;
+  menuSliding: boolean = false;
+  menuTimeout: number;
+
+  hasMenu = false;
 
   constructor(
     private stateService: StateService,
+    private cd: ChangeDetectorRef,
   ) {
     this.isiOS = ['iPhone','iPod','iPad'].includes((navigator as any)?.userAgentData?.platform || navigator.platform);
-  }
-
-  ngDoCheck(): void {
-    if (this.pendingOffset != null) {
-      const offset = this.pendingOffset;
-      this.pendingOffset = null;
-      this.addConvertedScrollOffset(offset);
+    if (this.stateService.network === '') {
+      this.hasMenu = true;
     }
   }
 
@@ -69,6 +78,7 @@ export class StartComponent implements OnInit, OnDestroy, DoCheck {
       this.blockCount = blocks.length;
       this.dynamicBlocksAmount = Math.min(this.blockCount, this.stateService.env.KEEP_BLOCKS_AMOUNT, 8);
       this.firstPageWidth = 40 + (this.blockWidth * this.dynamicBlocksAmount);
+      this.minScrollWidth = 40 + (8 * this.blockWidth) + (this.pageWidth * 2);
       if (this.blockCount <= Math.min(8, this.stateService.env.KEEP_BLOCKS_AMOUNT)) {
         this.onResize();
       }
@@ -114,7 +124,7 @@ export class StartComponent implements OnInit, OnDestroy, DoCheck {
             this.scrollToBlock(scrollToHeight);
           }
         }
-        if (!this.tipIsSet || (blockHeight < 0 && !this.mempoolOffset)) {
+        if (!this.tipIsSet || (blockHeight < 0 && this.mempoolOffset == null)) {
           this.pendingMark = blockHeight;
         }
       }
@@ -151,17 +161,56 @@ export class StartComponent implements OnInit, OnDestroy, DoCheck {
         this.stateService.resetScroll$.next(false);
       } 
     });
+
+    this.menuSubscription = this.stateService.menuOpen$.subscribe((open) => {
+      if (this.menuOpen !== open) {
+        this.menuOpen = open;
+        this.applyMenuScroll(this.menuOpen);
+      }
+    });
+  }
+
+  ngAfterViewChecked(): void {
+    if (this.currentScrollWidth !== this.blockchainContainer?.nativeElement?.scrollWidth) {
+      this.currentScrollWidth = this.blockchainContainer?.nativeElement?.scrollWidth;
+      if (this.pendingOffset != null) {
+        const delta = this.pendingOffset - (this.mempoolOffset || 0);
+        this.mempoolOffset = this.pendingOffset;
+        this.currentScrollWidth = this.blockchainContainer?.nativeElement?.scrollWidth;
+        this.pendingOffset = null;
+        this.addConvertedScrollOffset(delta);
+        this.applyPendingMarkArrow();
+      } else {
+        this.applyScrollLeft();
+      }
+    }
   }
 
   onMempoolOffsetChange(offset): void {
-    const delta = offset - this.mempoolOffset;
-    this.addConvertedScrollOffset(delta);
-    this.mempoolOffset = offset;
-    this.applyPendingMarkArrow();
+    if (offset !== this.mempoolOffset) {
+      this.pendingOffset = offset;
+    }
+  }
+
+  applyScrollLeft(): void {
+    if (this.blockchainContainer?.nativeElement?.scrollWidth) {
+      let lastScrollLeft = null;
+      while (this.scrollLeft < 0 && this.shiftPagesForward() && lastScrollLeft !== this.scrollLeft) {
+        lastScrollLeft = this.scrollLeft;
+        this.scrollLeft += this.pageWidth;
+      }
+      lastScrollLeft = null;
+      while (this.scrollLeft > this.blockchainContainer.nativeElement.scrollWidth && this.shiftPagesBack() && lastScrollLeft !== this.scrollLeft) {
+        lastScrollLeft = this.scrollLeft;
+        this.scrollLeft -= this.pageWidth;
+      }
+      this.blockchainContainer.nativeElement.scrollLeft = this.scrollLeft;
+    }
+    this.cd.detectChanges();
   }
 
   applyPendingMarkArrow(): void {
-    if (this.pendingMark != null) {
+    if (this.pendingMark != null && this.pendingMark <= this.chainTip) {
       if (this.pendingMark < 0) {
         this.scrollToBlock(this.chainTip - this.pendingMark);
       } else {
@@ -171,39 +220,48 @@ export class StartComponent implements OnInit, OnDestroy, DoCheck {
     }
   }
 
+  applyMenuScroll(opening: boolean): void {
+    this.menuSliding = true;
+    window.clearTimeout(this.menuTimeout);
+    this.menuTimeout = window.setTimeout(() => {
+      this.menuSliding = false;
+      this.cd.markForCheck();
+    }, 300);
+  }
+
   @HostListener('window:resize', ['$event'])
   onResize(): void {
-    this.isMobile = window.innerWidth <= 767.98;
+    this.chainWidth = window.innerWidth;
+    this.isMobile = this.chainWidth <= 767.98;
     let firstVisibleBlock;
     let offset;
-    if (this.blockchainContainer?.nativeElement != null) {
-      this.pages.forEach(page => {
-        const left = page.offset - this.getConvertedScrollOffset();
-        const right = left + this.pageWidth;
-        if (left <= 0 && right > 0) {
-          const blockIndex = Math.max(0, Math.floor(left / -this.blockWidth));
-          firstVisibleBlock = page.height - blockIndex;
-          offset = left + (blockIndex * this.blockWidth);
-        }
-      });
-    }
+    this.pages.forEach(page => {
+      const left = page.offset - this.getConvertedScrollOffset(this.scrollLeft);
+      const right = left + this.pageWidth;
+      if (left <= 0 && right > 0) {
+        const blockIndex = Math.max(0, Math.floor(left / -this.blockWidth));
+        firstVisibleBlock = page.height - blockIndex;
+        offset = left + (blockIndex * this.blockWidth);
+      }
+    });
 
-    this.blocksPerPage = Math.ceil(window.innerWidth / this.blockWidth);
+    this.blocksPerPage = Math.ceil(this.chainWidth / this.blockWidth);
     this.pageWidth = this.blocksPerPage * this.blockWidth;
-    this.minScrollWidth = this.firstPageWidth + (this.pageWidth * 2);
+    this.minScrollWidth = 40 + (8 * this.blockWidth) + (this.pageWidth * 2);
 
     if (firstVisibleBlock != null) {
-      this.scrollToBlock(firstVisibleBlock, offset + (this.isMobile ? this.blockWidth : 0));
+      this.scrollToBlock(firstVisibleBlock, offset);
     } else {
       this.updatePages();
     }
+    this.cd.markForCheck();
   }
 
   onMouseDown(event: MouseEvent) {
     if (!(event.which > 1 || event.button > 0)) {
       this.mouseDragStartX = event.clientX;
       this.resetMomentum(event.clientX);
-      this.blockchainScrollLeftInit = this.blockchainContainer.nativeElement.scrollLeft;
+      this.blockchainScrollLeftInit = this.scrollLeft;
     }
   }
   onPointerDown(event: PointerEvent) {
@@ -229,8 +287,8 @@ export class StartComponent implements OnInit, OnDestroy, DoCheck {
     if (this.mouseDragStartX != null) {
       this.updateVelocity(event.clientX);
       this.stateService.setBlockScrollingInProgress(true);
-      this.blockchainContainer.nativeElement.scrollLeft =
-        this.blockchainScrollLeftInit + this.mouseDragStartX - event.clientX;
+      this.scrollLeft = this.blockchainScrollLeftInit + this.mouseDragStartX - event.clientX;
+      this.applyScrollLeft();
     }
   }
   @HostListener('document:mouseup', [])
@@ -286,25 +344,31 @@ export class StartComponent implements OnInit, OnDestroy, DoCheck {
         } else {
           this.velocity += dv;
         }
-        this.blockchainContainer.nativeElement.scrollLeft -= displacement;
+        this.scrollLeft -= displacement;
+        this.applyScrollLeft();
         this.animateMomentum();
       }
     });
   }
 
   onScroll(e) {
+    if (this.blockchainContainer?.nativeElement?.scrollLeft == null) {
+      return;
+    }
+    this.scrollLeft = this.blockchainContainer?.nativeElement?.scrollLeft;
     const middlePage = this.pageIndex === 0 ? this.pages[0] : this.pages[1];
     // compensate for css transform
-    const translation = (this.isMobile ? window.innerWidth * 0.95 : window.innerWidth * 0.5);
+    const translation = (this.isMobile ? this.chainWidth * 0.95 : this.chainWidth * 0.5);
     const backThreshold = middlePage.offset + (this.pageWidth * 0.5) + translation;
     const forwardThreshold = middlePage.offset - (this.pageWidth * 0.5) + translation;
-    const scrollLeft = this.getConvertedScrollOffset();
-    if (scrollLeft > backThreshold) {
+    this.scrollLeft = this.blockchainContainer.nativeElement.scrollLeft;
+    const offsetScroll = this.getConvertedScrollOffset(this.scrollLeft);
+    if (offsetScroll > backThreshold) {
       if (this.shiftPagesBack()) {
         this.addConvertedScrollOffset(-this.pageWidth);
         this.blockchainScrollLeftInit -= this.pageWidth;
       }
-    } else if (scrollLeft < forwardThreshold) {
+    } else if (offsetScroll < forwardThreshold) {
       if (this.shiftPagesForward()) {
         this.addConvertedScrollOffset(this.pageWidth);
         this.blockchainScrollLeftInit += this.pageWidth;
@@ -313,10 +377,6 @@ export class StartComponent implements OnInit, OnDestroy, DoCheck {
   }
 
   scrollToBlock(height, blockOffset = 0) {
-    if (!this.blockchainContainer?.nativeElement) {
-      setTimeout(() => { this.scrollToBlock(height, blockOffset); }, 50);
-      return;
-    }
     if (this.isMobile) {
       blockOffset -= this.blockWidth;
     }
@@ -324,15 +384,15 @@ export class StartComponent implements OnInit, OnDestroy, DoCheck {
     const pages = [];
     this.pageIndex = Math.max(viewingPageIndex - 1, 0);
     let viewingPage = this.getPageAt(viewingPageIndex);
-    const isLastPage = viewingPage.height < this.blocksPerPage;
+    const isLastPage = viewingPage.height <= 0;
     if (isLastPage) {
       this.pageIndex = Math.max(viewingPageIndex - 2, 0);
       viewingPage = this.getPageAt(viewingPageIndex);
     }
-    const left = viewingPage.offset - this.getConvertedScrollOffset();
+    const left = viewingPage.offset - this.getConvertedScrollOffset(this.scrollLeft);
     const blockIndex = viewingPage.height - height;
     const targetOffset = (this.blockWidth * blockIndex) + left;
-    let deltaOffset = targetOffset - blockOffset;
+    const deltaOffset = targetOffset - blockOffset;
 
     if (isLastPage) {
       pages.push(this.getPageAt(viewingPageIndex - 2));
@@ -362,6 +422,7 @@ export class StartComponent implements OnInit, OnDestroy, DoCheck {
     pages.push(this.getPageAt(this.pageIndex + 1));
     pages.push(this.getPageAt(this.pageIndex + 2));
     this.pages = pages;
+    this.cd.markForCheck();
   }
 
   shiftPagesBack(): boolean {
@@ -414,49 +475,46 @@ export class StartComponent implements OnInit, OnDestroy, DoCheck {
 
   blockInViewport(height: number): boolean {
     const firstHeight = this.pages[0].height;
-    const translation = (this.isMobile ? window.innerWidth * 0.95 : window.innerWidth * 0.5);
-    const firstX = this.pages[0].offset - this.getConvertedScrollOffset() + translation;
+    const translation = (this.isMobile ? this.chainWidth * 0.95 : this.chainWidth * 0.5);
+    const firstX = this.pages[0].offset - this.getConvertedScrollOffset(this.scrollLeft) + translation;
     const xPos = firstX + ((firstHeight - height) * 155);
-    return xPos > -55 && xPos < (window.innerWidth - 100);
+    return xPos > -55 && xPos < (this.chainWidth - 100);
   }
 
-  getConvertedScrollOffset(): number {
+  getConvertedScrollOffset(scrollLeft): number {
     if (this.timeLtr) {
-      return -(this.blockchainContainer?.nativeElement?.scrollLeft || 0) - this.mempoolOffset;
+      return -(scrollLeft || 0) - (this.mempoolOffset || 0);
     } else {
-      return (this.blockchainContainer?.nativeElement?.scrollLeft || 0) - this.mempoolOffset;
+      return (scrollLeft || 0) - (this.mempoolOffset || 0);
     }
   }
 
   setScrollLeft(offset: number): void {
     if (this.timeLtr) {
-      this.blockchainContainer.nativeElement.scrollLeft = offset - this.mempoolOffset;
+      this.scrollLeft = offset - (this.mempoolOffset || 0);
     } else {
-      this.blockchainContainer.nativeElement.scrollLeft = offset + this.mempoolOffset;
+      this.scrollLeft = offset + (this.mempoolOffset || 0);
     }
+    this.applyScrollLeft();
   }
 
   addConvertedScrollOffset(offset: number): void {
-    if (!this.blockchainContainer?.nativeElement) {
-      this.pendingOffset = offset;
-      return;
-    }
     if (this.timeLtr) {
-      this.blockchainContainer.nativeElement.scrollLeft -= offset;
+      this.scrollLeft -= offset;
     } else {
-      this.blockchainContainer.nativeElement.scrollLeft += offset;
+      this.scrollLeft += offset;
     }
+    this.applyScrollLeft();
   }
 
   ngOnDestroy() {
-    if (this.blockchainContainer?.nativeElement) {
-      // clean up scroll position to prevent caching wrong scroll in Firefox
-      this.setScrollLeft(0);
-    }
+    // clean up scroll position to prevent caching wrong scroll in Firefox
+    this.setScrollLeft(0);
     this.timeLtrSubscription.unsubscribe();
     this.chainTipSubscription.unsubscribe();
     this.markBlockSubscription.unsubscribe();
     this.blockCounterSubscription.unsubscribe();
     this.resetScrollSubscription.unsubscribe();
+    this.menuSubscription.unsubscribe();
   }
 }

frontend/src/app/components/statistics/statistics.component.html

@@ -69,6 +69,12 @@
                 </button>
                 <div class="dropdown-fees" ngbDropdownMenu aria-labelledby="dropdownFees">
                   <ul>
+                    <li (click)="this.showCount = !this.showCount"
+                      [class]="this.showCount ? '' : 'inactive'">
+                      <span class="square" [ngStyle]="{'backgroundColor': 'white'}"></span>
+                      <span class="fee-text">{{ titleCount }}</span>
+                    </li>
+                    <hr style="margin: 4px;">
                     <ng-template ngFor let-feeData let-i="index" [ngForOf]="feeLevelDropdownData">
                       <ng-template [ngIf]="feeData.fee <= (feeLevels[maxFeeIndex])">
                         <li (click)="filterFeeIndex = feeData.fee"
@@ -92,8 +98,8 @@
         </div>
         <div class="card-body">
           <div class="incoming-transactions-graph">
-            <app-mempool-graph #mempoolgraph dir="ltr" [template]="'advanced'"
-              [limitFilterFee]="filterFeeIndex" [height]="500" [left]="65" [right]="10"
+            <app-mempool-graph #mempoolgraph dir="ltr" [template]="'advanced'" [hideCount]="!showCount"
+              [limitFilterFee]="filterFeeIndex" [height]="500" [left]="65" [right]="showCount ? 50 : 10"
               [data]="mempoolStats && mempoolStats.length ? mempoolStats : null"></app-mempool-graph>
           </div>
         </div>

frontend/src/app/components/statistics/statistics.component.ts

@@ -32,6 +32,7 @@ export class StatisticsComponent implements OnInit {
   chartColors = chartColors;
   filterSize = 100000;
   filterFeeIndex = 1;
+  showCount = true;
   maxFeeIndex: number;
   dropDownOpen = false;
 
@@ -46,6 +47,7 @@ export class StatisticsComponent implements OnInit {
   inverted: boolean;
   feeLevelDropdownData = [];
   timespan = '';
+  titleCount = $localize`Count`;
 
   constructor(
     @Inject(LOCALE_ID) private locale: string,
@@ -62,6 +64,7 @@ export class StatisticsComponent implements OnInit {
     this.inverted = this.storageService.getValue('inverted-graph') === 'true';
     this.setFeeLevelDropdownData();
     this.seoService.setTitle($localize`:@@5d4f792f048fcaa6df5948575d7cb325c9393383:Graphs`);
+    this.seoService.setDescription($localize`:@@meta.description.bitcoin.graphs.mempool:See mempool size (in MvB) and transactions per second (in vB/s) visualized over time.`);
     this.stateService.networkChanged$.subscribe((network) => this.network = network);
     this.graphWindowPreference = this.storageService.getValue('graphWindowPreference') ? this.storageService.getValue('graphWindowPreference').trim() : '2h';
 

frontend/src/app/components/svg-images/svg-images.component.html

@@ -74,6 +74,16 @@
       <path fill="#FFFFFF" d="M128 768h256v64H128v-64z m320-384H128v64h320v-64z m128 192V448L384 640l192 192V704h320V576H576z m-288-64H128v64h160v-64zM128 704h160v-64H128v64z m576 64h64v128c-1 18-7 33-19 45s-27 18-45 19H64c-35 0-64-29-64-64V192c0-35 29-64 64-64h192C256 57 313 0 384 0s128 57 128 128h192c35 0 64 29 64 64v320h-64V320H64v576h640V768zM128 256h512c0-35-29-64-64-64h-64c-35 0-64-29-64-64s-29-64-64-64-64 29-64 64-29 64-64 64h-64c-35 0-64 29-64 64z" />
     </svg>
   </ng-container>
+  <ng-container *ngSwitchCase="'hamburger'">
+    <svg [attr.width]="width" [attr.height]="height" viewBox="0 0 10 10" xmlns="http://www.w3.org/2000/svg" stroke="currentColor">
+      <path stroke-width="0.5" stroke-linecap="round" d="M0.5 2.5 H7 M0.5 5 H5.5 M0.5 7.5 H7"></path>
+    </svg>
+  </ng-container>
+  <ng-container *ngSwitchCase="'anon'">
+    <svg [attr.width]="width" [attr.height]="height" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg" stroke="currentColor">
+      <path stroke-linecap="round" stroke-linejoin="round" d="M9 9.5v-2a3 3 0 116 0v2c0 1.11-.603 2.08-1.5 2.599v1.224a1 1 0 00.629.928l2.05.82A3.693 3.693 0 0118.5 18.5h-13c0-1.51.92-2.868 2.321-3.428l2.05-.82a1 1 0 00.629-.929v-1.224A2.999 2.999 0 019 9.5z"></path>
+    </svg>
+  </ng-container>
 </ng-container>
 
 <ng-template #bitcoinLogo let-color let-width="width" let-height="height" let-viewBox="viewBox">

frontend/src/app/components/television/television.component.ts

@@ -37,6 +37,7 @@ export class TelevisionComponent implements OnInit, OnDestroy {
 
   ngOnInit() {
     this.seoService.setTitle($localize`:@@46ce8155c9ab953edeec97e8950b5a21e67d7c4e:TV view`);
+    this.seoService.setDescription($localize`:@@meta.description.tv:See Bitcoin blocks and mempool congestion in real-time in a simplified format perfect for a TV.`);
     this.websocketService.want(['blocks', 'live-2h-chart', 'mempool-blocks']);
 
     this.timeLtrSubscription = this.stateService.timeLtr.subscribe((ltr) => {

frontend/src/app/components/terms-of-service/terms-of-service.component.ts

@@ -1,5 +1,6 @@
 import { Component } from '@angular/core';
 import { Env, StateService } from '../../services/state.service';
+import { SeoService } from '../../services/seo.service';
 
 @Component({
   selector: 'app-terms-of-service',
@@ -10,5 +11,11 @@ export class TermsOfServiceComponent {
 
   constructor(
     private stateService: StateService,
+    private seoService: SeoService,
   ) { }
+
+  ngOnInit(): void {
+    this.seoService.setTitle('Terms of Service');
+    this.seoService.setDescription('Out of respect for the Bitcoin community, the mempool.space website is Bitcoin Only and does not display any advertising.');
+  }
 }

frontend/src/app/components/trademark-policy/trademark-policy.component.ts

@@ -1,5 +1,6 @@
 import { Component } from '@angular/core';
 import { Env, StateService } from '../../services/state.service';
+import { SeoService } from '../../services/seo.service';
 
 @Component({
   selector: 'app-trademark-policy',
@@ -11,5 +12,11 @@ export class TrademarkPolicyComponent {
 
   constructor(
     private stateService: StateService,
+    private seoService: SeoService,
   ) { }
+
+  ngOnInit(): void {
+    this.seoService.setTitle('Trademark Policy');
+    this.seoService.setDescription('An overview of the trademarks registered by Mempool Space K.K. and The Mempool Open Source Project® and what we consider to be lawful usage of those trademarks.');
+  }
 }

frontend/src/app/components/transaction/transaction-preview.component.ts

@@ -15,6 +15,7 @@ import { CacheService } from '../../services/cache.service';
 import { OpenGraphService } from '../../services/opengraph.service';
 import { ApiService } from '../../services/api.service';
 import { SeoService } from '../../services/seo.service';
+import { seoDescriptionNetwork } from '../../shared/common.utils';
 import { CpfpInfo } from '../../interfaces/node-api.interface';
 import { LiquidUnblinding } from './liquid-ublinding';
 
@@ -87,6 +88,7 @@ export class TransactionPreviewComponent implements OnInit, OnDestroy {
           this.seoService.setTitle(
             $localize`:@@bisq.transaction.browser-title:Transaction: ${this.txId}:INTERPOLATION:`
           );
+          this.seoService.setDescription($localize`:@@meta.description.bitcoin.transaction:Get real-time status, addresses, fees, script info, and more for ${this.stateService.network==='liquid'||this.stateService.network==='liquidtestnet'?'Liquid':'Bitcoin'}${seoDescriptionNetwork(this.stateService.network)} transaction with txid {txid}.`);
           this.resetTransaction();
           return merge(
             of(true),

frontend/src/app/components/transaction/transaction.component.html

@@ -6,6 +6,13 @@
       <app-truncate [text]="rbfTransaction.txid" [lastChars]="12" [link]="['/tx/' | relativeUrl, rbfTransaction.txid]"></app-truncate>
     </div>
 
+    <div *ngIf="acceleratorAvailable && accelerateCtaType === 'alert' && !tx?.status?.confirmed && !tx?.acceleration" class="alert alert-mempool alert-dismissible" role="alert">
+      <span><a class="link accelerator" (click)="onAccelerateClicked()">Accelerate</a> this transaction using Mempool Accelerator &trade;</span>
+      <button type="button" class="close" aria-label="Close" (click)="dismissAccelAlert()">
+        <span aria-hidden="true">&times;</span>
+      </button>
+    </div>
+
     <ng-container *ngIf="!rbfTransaction || rbfTransaction?.size || tx">
       <h1 i18n="shared.transaction">Transaction</h1>
 
@@ -66,12 +73,22 @@
           <div class="col-sm">
             <ng-container *ngTemplateOutlet="feeTable"></ng-container>
           </div>
-
         </div>
       </div>
 
     </ng-template>
 
+    <!-- Accelerator -->
+    <ng-container *ngIf="!tx?.status?.confirmed && showAccelerationSummary">
+      <div class="title mt-3" id="acceleratePreviewAnchor">
+        <h2>Accelerate</h2>
+      </div>
+      <div class="box">
+        <app-accelerate-preview [tx]="tx" [scrollEvent]="scrollIntoAccelPreview"></app-accelerate-preview>
+      </div>
+
+    </ng-container>
+
     <ng-template #unconfirmedTemplate>
 
       <div class="box">
@@ -92,16 +109,16 @@
                   </ng-template>
                 </ng-template>
                 <tr *ngIf="!replaced && !isCached">
-                  <td class="td-width" i18n="transaction.eta|Transaction ETA">ETA</td>
+                  <td class="td-width align-items-center align-middle" i18n="transaction.eta|Transaction ETA">ETA</td>
                   <td>
                     <ng-template [ngIf]="this.mempoolPosition?.block == null" [ngIfElse]="estimationTmpl">
                       <span class="skeleton-loader"></span>
                     </ng-template>
                     <ng-template #estimationTmpl>
                       <ng-template [ngIf]="this.mempoolPosition.block >= 7" [ngIfElse]="belowBlockLimit">
-                        <span class="eta d-flex">
+                        <span [class]="(acceleratorAvailable && accelerateCtaType === 'button') ? 'etaDeepMempool d-flex justify-content-end align-items-center' : ''">
                           <span i18n="transaction.eta.in-several-hours|Transaction ETA in several hours or more">In several hours (or more)</span>
-                          <span class="ml-2"></span><a *ngIf="stateService.env.OFFICIAL_MEMPOOL_SPACE && stateService.env.ACCELERATOR && stateService.network === ''" [href]="'/services/accelerator/accelerate?txid=' + tx.txid" class="btn badge badge-primary accelerate ml-auto" i18n="transaction.accelerate|Accelerate button label">Accelerate</a>
+                          <a *ngIf="acceleratorAvailable && accelerateCtaType === 'button' && !tx?.acceleration" [href]="'/services/accelerator/accelerate?txid=' + tx.txid" class="btn btn-sm accelerateDeepMempool" i18n="transaction.accelerate|Accelerate button label" (click)="onAccelerateClicked()">Accelerate</a>
                         </span>
                       </ng-template>
                       <ng-template #belowBlockLimit>
@@ -109,9 +126,9 @@
                           <app-time kind="until" [time]="(60 * 1000 * this.mempoolPosition.block) + now" [fastRender]="false" [fixedRender]="true"></app-time>
                         </ng-template>
                         <ng-template #timeEstimateDefault>
-                          <span class="d-flex">
+                          <span class="eta justify-content-end" [class]="(acceleratorAvailable && accelerateCtaType === 'button') ? 'd-flex align-items-center' : ''">
                             <app-time kind="until" *ngIf="(da$ | async) as da;" [time]="da.timeAvg * (this.mempoolPosition.block + 1) + now + da.timeOffset" [fastRender]="false" [fixedRender]="true"></app-time>
-                            <span class="ml-2"></span><a *ngIf="stateService.env.OFFICIAL_MEMPOOL_SPACE && stateService.env.ACCELERATOR && stateService.network === ''" [href]="'/services/accelerator/accelerate?txid=' + tx.txid" class="btn badge badge-primary accelerate ml-auto" i18n="transaction.accelerate|Accelerate button label">Accelerate</a>
+                            <a *ngIf="acceleratorAvailable && accelerateCtaType === 'button' && !tx?.acceleration" [href]="'/services/accelerator/accelerate?txid=' + tx.txid" class="btn btn-sm accelerate" i18n="transaction.accelerate|Accelerate button label" (click)="onAccelerateClicked()">Accelerate</a>
                           </span>
                         </ng-template>
                       </ng-template>

frontend/src/app/components/transaction/transaction.component.scss

@@ -130,7 +130,7 @@
 }
 
 .table {
-  	tr td {
+  tr td {
 		padding: 0.75rem 0.5rem;
 		@media (min-width: 576px) {
 			padding: 0.75rem 0.75rem;
@@ -138,7 +138,7 @@
 		&:last-child {
 			text-align: right;
 			@media (min-width: 850px) {
-			text-align: left;
+        text-align: left;
 			}
 		}
 		.btn {
@@ -218,21 +218,52 @@
   }
 }
 
+.link.accelerator {
+  cursor: pointer;
+}
+
 .eta {
   display: flex;
-  justify-content: end;
   flex-wrap: wrap;
   align-content: center;
   @media (min-width: 850px) {
-    justify-content: space-between;
+    justify-content: left !important;    
   }
 }
 
 .accelerate {
+  display: flex !important;
   align-self: auto;
   margin-top: 3px;
-  @media (min-width: 850px) {
-    justify-self: start;
+  margin-left: auto;
+  background-color: #653b9c;
+  @media (max-width: 849px) {
+    margin-left: 5px;
+  }
+}
+
+.etaDeepMempool {
+  display: flex !important;
+  justify-content: end;
+  flex-wrap: wrap;
+  align-content: center;
+  @media (max-width: 995px) {
+    justify-content: left !important;
+  }
+  @media (max-width: 849px) {
+    justify-content: right !important;
+  }
+}
+
+.accelerateDeepMempool {
+  align-self: auto;
+  margin-top: 3px;
+  margin-left: auto;
+  background-color: #653b9c;
+  @media (max-width: 995px) {
     margin-left: 0px;
   }
-}
+  @media (max-width: 849px) {
+    margin-left: 5px;
+  }
+}