diff --git a/backend/src/api/blocks.ts b/backend/src/api/blocks.ts
index 081442567..cd72d91e0 100644
--- a/backend/src/api/blocks.ts
+++ b/backend/src/api/blocks.ts
@@ -97,7 +97,7 @@ class Blocks {
   private getBlockExtended(block: IEsploraApi.Block, transactions: TransactionExtended[]): BlockExtended {
     const blockExtended: BlockExtended = Object.assign({}, block);
 
-    blockExtended.extra = {
+    blockExtended.extras = {
       reward: transactions[0].vout.reduce((acc, curr) => acc + curr.value, 0),
       coinbaseTx: transactionUtils.stripCoinbaseTransaction(transactions[0]),
     };
@@ -106,9 +106,9 @@ class Blocks {
     transactionsTmp.shift();
     transactionsTmp.sort((a, b) => b.effectiveFeePerVsize - a.effectiveFeePerVsize);
 
-    blockExtended.extra.medianFee = transactionsTmp.length > 0 ?
+    blockExtended.extras.medianFee = transactionsTmp.length > 0 ?
       Common.median(transactionsTmp.map((tx) => tx.effectiveFeePerVsize)) : 0;
-    blockExtended.extra.feeRange = transactionsTmp.length > 0 ?
+    blockExtended.extras.feeRange = transactionsTmp.length > 0 ?
       Common.getFeesInRange(transactionsTmp, 8) : [0, 0];
 
     return blockExtended;
@@ -205,8 +205,8 @@ class Blocks {
             const blockExtended = this.getBlockExtended(block, transactions);
 
             let miner: PoolTag;
-            if (blockExtended?.extra?.coinbaseTx) {
-              miner = await this.$findBlockMiner(blockExtended.extra.coinbaseTx);
+            if (blockExtended?.extras?.coinbaseTx) {
+              miner = await this.$findBlockMiner(blockExtended.extras.coinbaseTx);
             } else {
               miner = await poolsRepository.$getUnknownPool();
             }
@@ -276,8 +276,8 @@ class Blocks {
 
       if (['mainnet', 'testnet', 'signet'].includes(config.MEMPOOL.NETWORK) === true) {
         let miner: PoolTag;
-        if (blockExtended?.extra?.coinbaseTx) {
-          miner = await this.$findBlockMiner(blockExtended.extra.coinbaseTx);
+        if (blockExtended?.extras?.coinbaseTx) {
+          miner = await this.$findBlockMiner(blockExtended.extras.coinbaseTx);
         } else {
           miner = await poolsRepository.$getUnknownPool();
         }
diff --git a/backend/src/api/websocket-handler.ts b/backend/src/api/websocket-handler.ts
index 5478445df..53d74925d 100644
--- a/backend/src/api/websocket-handler.ts
+++ b/backend/src/api/websocket-handler.ts
@@ -380,8 +380,8 @@ class WebsocketHandler {
       mBlocks = mempoolBlocks.getMempoolBlocks();
     }
 
-    if (block.extra) {
-      block.extra.matchRate = matchRate;
+    if (block.extras) {
+      block.extras.matchRate = matchRate;
     }
 
     this.wss.clients.forEach((client) => {
diff --git a/backend/src/mempool.interfaces.ts b/backend/src/mempool.interfaces.ts
index 17509b814..7dfcd3956 100644
--- a/backend/src/mempool.interfaces.ts
+++ b/backend/src/mempool.interfaces.ts
@@ -86,7 +86,7 @@ export interface BlockExtension {
 }
 
 export interface BlockExtended extends IEsploraApi.Block {
-  extra?: BlockExtension;
+  extras?: BlockExtension;
 }
 
 export interface TransactionMinerInfo {
diff --git a/backend/src/repositories/BlocksRepository.ts b/backend/src/repositories/BlocksRepository.ts
index 2d55fc1cb..fd9549845 100644
--- a/backend/src/repositories/BlocksRepository.ts
+++ b/backend/src/repositories/BlocksRepository.ts
@@ -42,7 +42,7 @@ class BlocksRepository {
         poolTag.id,
         0,
         '[]',
-        block.extra ? block.extra.medianFee : 0,
+        block.extras ? block.extras.medianFee : 0,
       ];
 
       await connection.query(query, params);
diff --git a/frontend/src/app/components/block/block.component.html b/frontend/src/app/components/block/block.component.html
index 4f6e1cc03..8970bd372 100644
--- a/frontend/src/app/components/block/block.component.html
+++ b/frontend/src/app/components/block/block.component.html
@@ -74,9 +74,9 @@
         <div class="col-sm">
           <table class="table table-borderless table-striped">
             <tbody>
-              <tr *ngIf="block?.extra?.medianFee != undefined">
+              <tr *ngIf="block?.extras?.medianFee != undefined">
                 <td class="td-width" i18n="block.median-fee">Median fee</td>
-                <td>~{{ block?.extra?.medianFee | number:'1.0-0' }} <span class="symbol" i18n="shared.sat-vbyte|sat/vB">sat/vB</span> <span class="fiat"><app-fiat [value]="block?.extra?.medianFee * 140" digitsInfo="1.2-2" i18n-ngbTooltip="Transaction fee tooltip" ngbTooltip="Based on average native segwit transaction of 140 vBytes" placement="bottom"></app-fiat></span></td>
+                <td>~{{ block?.extras?.medianFee | number:'1.0-0' }} <span class="symbol" i18n="shared.sat-vbyte|sat/vB">sat/vB</span> <span class="fiat"><app-fiat [value]="block?.extras?.medianFee * 140" digitsInfo="1.2-2" i18n-ngbTooltip="Transaction fee tooltip" ngbTooltip="Based on average native segwit transaction of 140 vBytes" placement="bottom"></app-fiat></span></td>
               </tr>
               <ng-template [ngIf]="fees !== undefined" [ngIfElse]="loadingFees">
                 <tr>
diff --git a/frontend/src/app/components/block/block.component.ts b/frontend/src/app/components/block/block.component.ts
index c079b5efd..4e7b08373 100644
--- a/frontend/src/app/components/block/block.component.ts
+++ b/frontend/src/app/components/block/block.component.ts
@@ -77,8 +77,8 @@ export class BlockComponent implements OnInit, OnDestroy {
 
         if (block.id === this.blockHash) {
           this.block = block;
-          if (block?.extra?.reward != undefined) {
-            this.fees = block.extra.reward / 100000000 - this.blockSubsidy;
+          if (block?.extras?.reward != undefined) {
+            this.fees = block.extras.reward / 100000000 - this.blockSubsidy;
           }
         }
       });
@@ -145,10 +145,10 @@ export class BlockComponent implements OnInit, OnDestroy {
 
         this.seoService.setTitle($localize`:@@block.component.browser-title:Block ${block.height}:BLOCK_HEIGHT:: ${block.id}:BLOCK_ID:`);
         this.isLoadingBlock = false;
-        this.coinbaseTx = block?.extra?.coinbaseTx;
+        this.coinbaseTx = block?.extras?.coinbaseTx;
         this.setBlockSubsidy();
-        if (block?.extra?.reward !== undefined) {
-          this.fees = block.extra.reward / 100000000 - this.blockSubsidy;
+        if (block?.extras?.reward !== undefined) {
+          this.fees = block.extras.reward / 100000000 - this.blockSubsidy;
         }
         this.stateService.markBlock$.next({ blockHeight: this.blockHeight });
         this.isLoadingTransactions = true;
diff --git a/frontend/src/app/components/blockchain-blocks/blockchain-blocks.component.html b/frontend/src/app/components/blockchain-blocks/blockchain-blocks.component.html
index 4a74dab3c..50fd82b09 100644
--- a/frontend/src/app/components/blockchain-blocks/blockchain-blocks.component.html
+++ b/frontend/src/app/components/blockchain-blocks/blockchain-blocks.component.html
@@ -8,10 +8,10 @@
       </div>
       <div class="block-body">
         <div class="fees">
-          ~{{ block?.extra?.medianFee | number:feeRounding }} <ng-container i18n="shared.sat-vbyte|sat/vB">sat/vB</ng-container>
+          ~{{ block?.extras?.medianFee | number:feeRounding }} <ng-container i18n="shared.sat-vbyte|sat/vB">sat/vB</ng-container>
         </div>
         <div class="fee-span">
-          {{ block?.extra?.feeRange[1] | number:feeRounding }} - {{ block?.extra?.feeRange[block?.extra?.feeRange.length - 1] | number:feeRounding }} <ng-container i18n="shared.sat-vbyte|sat/vB">sat/vB</ng-container>
+          {{ block?.extras?.feeRange[1] | number:feeRounding }} - {{ block?.extras?.feeRange[block?.extras?.feeRange.length - 1] | number:feeRounding }} <ng-container i18n="shared.sat-vbyte|sat/vB">sat/vB</ng-container>
         </div>
         <div class="block-size" [innerHTML]="'&lrm;' + (block.size | bytes: 2)"></div>
         <div class="transaction-count">
diff --git a/frontend/src/app/components/blockchain-blocks/blockchain-blocks.component.ts b/frontend/src/app/components/blockchain-blocks/blockchain-blocks.component.ts
index 7dcec9cc3..ef076e74b 100644
--- a/frontend/src/app/components/blockchain-blocks/blockchain-blocks.component.ts
+++ b/frontend/src/app/components/blockchain-blocks/blockchain-blocks.component.ts
@@ -69,8 +69,8 @@ export class BlockchainBlocksComponent implements OnInit, OnDestroy {
         this.blocks.unshift(block);
         this.blocks = this.blocks.slice(0, this.stateService.env.KEEP_BLOCKS_AMOUNT);
 
-        if (this.blocksFilled && !this.tabHidden && block.extra) {
-          block.extra.stage = block.extra.matchRate >= 66 ? 1 : 2;
+        if (this.blocksFilled && !this.tabHidden && block.extras) {
+          block.extras.stage = block.extras.matchRate >= 66 ? 1 : 2;
         }
 
         if (txConfirmed) {
@@ -151,8 +151,8 @@ export class BlockchainBlocksComponent implements OnInit, OnDestroy {
     const greenBackgroundHeight = 100 - (block.weight / this.stateService.env.BLOCK_WEIGHT_UNITS) * 100;
     let addLeft = 0;
 
-    if (block?.extra?.stage === 1) {
-      block.extra.stage = 2;
+    if (block?.extras?.stage === 1) {
+      block.extras.stage = 2;
       addLeft = -205;
     }
 
@@ -170,8 +170,8 @@ export class BlockchainBlocksComponent implements OnInit, OnDestroy {
   getStyleForEmptyBlock(block: BlockExtended) {
     let addLeft = 0;
 
-    if (block?.extra?.stage === 1) {
-      block.extra.stage = 2;
+    if (block?.extras?.stage === 1) {
+      block.extras.stage = 2;
       addLeft = -205;
     }
 
diff --git a/frontend/src/app/components/mempool-blocks/mempool-blocks.component.ts b/frontend/src/app/components/mempool-blocks/mempool-blocks.component.ts
index 1bfb665b6..de345a7d8 100644
--- a/frontend/src/app/components/mempool-blocks/mempool-blocks.component.ts
+++ b/frontend/src/app/components/mempool-blocks/mempool-blocks.component.ts
@@ -153,7 +153,7 @@ export class MempoolBlocksComponent implements OnInit, OnDestroy {
 
     this.blockSubscription = this.stateService.blocks$
       .subscribe(([block]) => {
-        if (block?.extra?.matchRate >= 66 && !this.tabHidden) {
+        if (block?.extras?.matchRate >= 66 && !this.tabHidden) {
           this.blockIndex++;
         }
       });
diff --git a/frontend/src/app/components/tx-fee-rating/tx-fee-rating.component.ts b/frontend/src/app/components/tx-fee-rating/tx-fee-rating.component.ts
index 0a2100831..3879ca835 100644
--- a/frontend/src/app/components/tx-fee-rating/tx-fee-rating.component.ts
+++ b/frontend/src/app/components/tx-fee-rating/tx-fee-rating.component.ts
@@ -29,7 +29,7 @@ export class TxFeeRatingComponent implements OnInit, OnChanges, OnDestroy {
   ngOnInit() {
     this.blocksSubscription = this.stateService.blocks$.subscribe(([block]) => {
       this.blocks.push(block);
-      if (this.tx.status.confirmed && this.tx.status.block_height === block.height && block?.extra?.medianFee > 0) {
+      if (this.tx.status.confirmed && this.tx.status.block_height === block.height && block?.extras?.medianFee > 0) {
         this.calculateRatings(block);
         this.cd.markForCheck();
       }
@@ -43,7 +43,7 @@ export class TxFeeRatingComponent implements OnInit, OnChanges, OnDestroy {
     }
 
     const foundBlock = this.blocks.find((b) => b.height === this.tx.status.block_height);
-    if (foundBlock && foundBlock?.extra?.medianFee > 0) {
+    if (foundBlock && foundBlock?.extras?.medianFee > 0) {
       this.calculateRatings(foundBlock);
     }
   }
@@ -54,7 +54,7 @@ export class TxFeeRatingComponent implements OnInit, OnChanges, OnDestroy {
 
   calculateRatings(block: BlockExtended) {
     const feePervByte = this.tx.effectiveFeePerVsize || this.tx.fee / (this.tx.weight / 4);
-    this.medianFeeNeeded = block?.extra?.medianFee;
+    this.medianFeeNeeded = block?.extras?.medianFee;
 
     // Block not filled
     if (block.weight < this.stateService.env.BLOCK_WEIGHT_UNITS * 0.95) {
diff --git a/frontend/src/app/interfaces/node-api.interface.ts b/frontend/src/app/interfaces/node-api.interface.ts
index c48b3e000..373385422 100644
--- a/frontend/src/app/interfaces/node-api.interface.ts
+++ b/frontend/src/app/interfaces/node-api.interface.ts
@@ -93,6 +93,6 @@ export interface BlockExtension {
 }
 
 export interface BlockExtended extends Block {
-  extra?: BlockExtension;
+  extras?: BlockExtension;
 }