diff --git a/src/contextualizers/bridges/opStack/destination.ts b/src/contextualizers/bridges/opStack/destination.ts
index 2c64ddb0..8a0d5345 100644
--- a/src/contextualizers/bridges/opStack/destination.ts
+++ b/src/contextualizers/bridges/opStack/destination.ts
@@ -42,7 +42,7 @@ export function generate(transaction: Transaction): Transaction {
   switch (assetTransfer.type) {
     case AssetType.ETH:
       asset = {
-        type: formatNativeToken(transaction.chainId),
+        type: formatNativeToken(transaction.chainId ?? 1),
         value: assetTransfer.value,
         unit: 'wei',
       } as ContextETHType;
diff --git a/src/contextualizers/bridges/opStack/source.ts b/src/contextualizers/bridges/opStack/source.ts
index da0abe5e..f346625a 100644
--- a/src/contextualizers/bridges/opStack/source.ts
+++ b/src/contextualizers/bridges/opStack/source.ts
@@ -69,7 +69,7 @@ export function generate(transaction: Transaction): Transaction {
   switch (assetTransfer.type) {
     case AssetType.ETH:
       asset = {
-        type: formatNativeToken(transaction.chainId),
+        type: formatNativeToken(transaction.chainId ?? 1),
         value: assetTransfer.value,
         unit: 'wei',
       } as ContextETHType;
diff --git a/src/contextualizers/bridges/reservoir/destination.ts b/src/contextualizers/bridges/reservoir/destination.ts
index 20d12b07..04b5ec5e 100644
--- a/src/contextualizers/bridges/reservoir/destination.ts
+++ b/src/contextualizers/bridges/reservoir/destination.ts
@@ -71,7 +71,7 @@ export function generate(transaction: Transaction): Transaction {
         value: 'BRIDGED',
       },
       asset: {
-        type: formatNativeToken(transaction.chainId),
+        type: formatNativeToken(transaction.chainId ?? 1),
         value: assetTransfer.value,
         unit: 'wei',
       },
diff --git a/src/contextualizers/heuristics/erc1155Mint/erc1155Mint.ts b/src/contextualizers/heuristics/erc1155Mint/erc1155Mint.ts
index 98a26561..b782ca7a 100644
--- a/src/contextualizers/heuristics/erc1155Mint/erc1155Mint.ts
+++ b/src/contextualizers/heuristics/erc1155Mint/erc1155Mint.ts
@@ -113,7 +113,7 @@ export function generate(transaction: Transaction): Transaction {
       },
       minted: { type: 'contextAction', value: 'MINTED' },
       price: {
-        type: formatNativeToken(transaction.chainId),
+        type: formatNativeToken(transaction.chainId ?? 1),
         value: price,
         unit: 'wei',
       },
diff --git a/src/contextualizers/heuristics/erc1155Purchase/erc1155Purchase.ts b/src/contextualizers/heuristics/erc1155Purchase/erc1155Purchase.ts
index 98e29cf4..4f4c0f74 100644
--- a/src/contextualizers/heuristics/erc1155Purchase/erc1155Purchase.ts
+++ b/src/contextualizers/heuristics/erc1155Purchase/erc1155Purchase.ts
@@ -186,7 +186,7 @@ function generate(transaction: Transaction): Transaction {
             }
           : ethPayments.length > 0
             ? {
-                type: formatNativeToken(transaction.chainId),
+                type: formatNativeToken(transaction.chainId ?? 1),
                 value: totalETHPayment.toString(),
                 unit: 'wei',
               }
diff --git a/src/contextualizers/heuristics/erc1155Sale/erc1155Sale.ts b/src/contextualizers/heuristics/erc1155Sale/erc1155Sale.ts
index e7726bc3..b3ec8f28 100644
--- a/src/contextualizers/heuristics/erc1155Sale/erc1155Sale.ts
+++ b/src/contextualizers/heuristics/erc1155Sale/erc1155Sale.ts
@@ -160,7 +160,7 @@ function generate(transaction: Transaction): Transaction {
             }
           : ethPayments.length > 0
             ? {
-                type: formatNativeToken(transaction.chainId),
+                type: formatNativeToken(transaction.chainId ?? 1),
                 value: totalETHPayment.toString(),
                 unit: 'wei',
               }
diff --git a/src/contextualizers/heuristics/erc20Mint/erc20Mint.ts b/src/contextualizers/heuristics/erc20Mint/erc20Mint.ts
index fb3cd2bc..930adb2c 100644
--- a/src/contextualizers/heuristics/erc20Mint/erc20Mint.ts
+++ b/src/contextualizers/heuristics/erc20Mint/erc20Mint.ts
@@ -116,7 +116,7 @@ export function generate(transaction: Transaction): Transaction {
         value: recipient,
       },
       price: {
-        type: formatNativeToken(transaction.chainId),
+        type: formatNativeToken(transaction.chainId ?? 1),
         value: price,
         unit: 'wei',
       },
diff --git a/src/contextualizers/heuristics/erc721Mint/erc721Mint.ts b/src/contextualizers/heuristics/erc721Mint/erc721Mint.ts
index f38271b9..186614b6 100644
--- a/src/contextualizers/heuristics/erc721Mint/erc721Mint.ts
+++ b/src/contextualizers/heuristics/erc721Mint/erc721Mint.ts
@@ -101,7 +101,7 @@ export function generate(transaction: Transaction): Transaction {
         value: sender,
       },
       price: {
-        type: formatNativeToken(transaction.chainId),
+        type: formatNativeToken(transaction.chainId ?? 1),
         value: price,
         unit: 'wei',
       },
diff --git a/src/contextualizers/heuristics/erc721Purchase/erc721Purchase.ts b/src/contextualizers/heuristics/erc721Purchase/erc721Purchase.ts
index d3ec96ef..7195578c 100644
--- a/src/contextualizers/heuristics/erc721Purchase/erc721Purchase.ts
+++ b/src/contextualizers/heuristics/erc721Purchase/erc721Purchase.ts
@@ -177,7 +177,7 @@ export function generate(transaction: Transaction): Transaction {
             }
           : ethPayments.length > 0
             ? {
-                type: formatNativeToken(transaction.chainId),
+                type: formatNativeToken(transaction.chainId ?? 1),
                 value: totalETHPayment.toString(),
                 unit: 'wei',
               }
diff --git a/src/contextualizers/heuristics/erc721Sale/erc721Sale.ts b/src/contextualizers/heuristics/erc721Sale/erc721Sale.ts
index 57be8437..f330d908 100644
--- a/src/contextualizers/heuristics/erc721Sale/erc721Sale.ts
+++ b/src/contextualizers/heuristics/erc721Sale/erc721Sale.ts
@@ -169,7 +169,7 @@ export function generate(transaction: Transaction): Transaction {
             }
           : ethPayments.length > 0
             ? {
-                type: formatNativeToken(transaction.chainId),
+                type: formatNativeToken(transaction.chainId ?? 1),
                 value: totalETHPayment.toString(),
                 unit: 'wei',
               }
diff --git a/src/contextualizers/heuristics/ethTransfer/ethTransfer.ts b/src/contextualizers/heuristics/ethTransfer/ethTransfer.ts
index ea593edf..af8a9895 100644
--- a/src/contextualizers/heuristics/ethTransfer/ethTransfer.ts
+++ b/src/contextualizers/heuristics/ethTransfer/ethTransfer.ts
@@ -27,8 +27,6 @@ export function generate(transaction: Transaction): Transaction {
     return transaction;
   }
 
-  const chainId = transaction.chainId ?? 1;
-
   transaction.context = {
     variables: {
       sender: {
@@ -37,7 +35,7 @@ export function generate(transaction: Transaction): Transaction {
       },
 
       amount: {
-        type: formatNativeToken(chainId),
+        type: formatNativeToken(transaction.chainId ?? 1),
         value: transaction.value.toString(),
         unit: 'wei',
       },
diff --git a/src/contextualizers/protocol/basepaint/basepaint.ts b/src/contextualizers/protocol/basepaint/basepaint.ts
index f200ce1b..489845c0 100644
--- a/src/contextualizers/protocol/basepaint/basepaint.ts
+++ b/src/contextualizers/protocol/basepaint/basepaint.ts
@@ -121,7 +121,7 @@ export const generate = (transaction: Transaction): Transaction => {
           value: transaction.from,
         },
         amount: {
-          type: formatNativeToken(transaction.chainId),
+          type: formatNativeToken(transaction.chainId ?? 1),
           value,
           unit: 'wei',
         },
diff --git a/src/contextualizers/protocol/cryptopunks/cryptopunks.ts b/src/contextualizers/protocol/cryptopunks/cryptopunks.ts
index 65855d24..9baa6fdc 100644
--- a/src/contextualizers/protocol/cryptopunks/cryptopunks.ts
+++ b/src/contextualizers/protocol/cryptopunks/cryptopunks.ts
@@ -63,7 +63,6 @@ export const generate = (transaction: Transaction): Transaction => {
   ) {
     return transaction;
   }
-  const chainId = transaction.chainId ?? 1;
 
   const decoded = decodeTransactionInput(
     transaction.input as Hex,
@@ -132,7 +131,7 @@ export const generate = (transaction: Transaction): Transaction => {
         tokenId: decoded.args[0].toString(),
       };
       const price: ContextSummaryVariableType = {
-        type: formatNativeToken(chainId),
+        type: formatNativeToken(transaction.chainId ?? 1),
         value: decoded.args[1].toString(),
         unit: 'wei',
       };
@@ -192,7 +191,7 @@ export const generate = (transaction: Transaction): Transaction => {
       if (!ethAssetTransfer) return transaction;
 
       const price: ContextSummaryVariableType = {
-        type: formatNativeToken(chainId),
+        type: formatNativeToken(transaction.chainId ?? 1),
         value: ethAssetTransfer.value,
         unit: 'wei',
       };
@@ -248,7 +247,7 @@ export const generate = (transaction: Transaction): Transaction => {
         tokenId: decoded.args[0].toString(),
       };
       const price: ContextSummaryVariableType = {
-        type: formatNativeToken(chainId),
+        type: formatNativeToken(transaction.chainId ?? 1),
         value: transaction.value.toString(),
         unit: 'wei',
       };
@@ -301,7 +300,7 @@ export const generate = (transaction: Transaction): Transaction => {
       const ethAssetTransfer = transaction
         .assetTransfers?.[0] as ETHAssetTransfer;
       const amount: ContextSummaryVariableType = {
-        type: formatNativeToken(chainId),
+        type: formatNativeToken(transaction.chainId ?? 1),
         value: ethAssetTransfer.value,
         unit: 'wei',
       };
@@ -355,7 +354,7 @@ export const generate = (transaction: Transaction): Transaction => {
         tokenId: decoded.args[0].toString(),
       };
       const price: ContextSummaryVariableType = {
-        type: formatNativeToken(chainId),
+        type: formatNativeToken(transaction.chainId ?? 1),
         value: transaction.value.toString(),
         unit: 'wei',
       };
@@ -530,7 +529,7 @@ export const generate = (transaction: Transaction): Transaction => {
         tokenId: decoded.args[0].toString(),
       };
       const price: ContextSummaryVariableType = {
-        type: formatNativeToken(chainId),
+        type: formatNativeToken(transaction.chainId ?? 1),
         value: decoded.args[1].toString(),
         unit: 'wei',
       };
diff --git a/src/contextualizers/protocol/disperse/disperse.ts b/src/contextualizers/protocol/disperse/disperse.ts
index 0970dc54..4b777c12 100644
--- a/src/contextualizers/protocol/disperse/disperse.ts
+++ b/src/contextualizers/protocol/disperse/disperse.ts
@@ -89,7 +89,7 @@ export const generate = (transaction: Transaction): Transaction => {
             value: tipTransfer.to,
           },
           numOfEth: {
-            type: formatNativeToken(transaction.chainId),
+            type: formatNativeToken(transaction.chainId ?? 1),
             value: tipTransfer.value,
             unit: 'wei',
           },
diff --git a/src/contextualizers/protocol/farcaster/bundler.ts b/src/contextualizers/protocol/farcaster/bundler.ts
index 52d4018f..63179462 100644
--- a/src/contextualizers/protocol/farcaster/bundler.ts
+++ b/src/contextualizers/protocol/farcaster/bundler.ts
@@ -51,10 +51,9 @@ export const generate = (transaction: Transaction): Transaction => {
     case 'register': {
       const owner = decoded.args[0].to;
       const callerIsOwner = owner.toLowerCase() === caller.toLowerCase();
-      const chainId = transaction.chainId ?? 1;
       // Capture cost to register
       const cost: ContextSummaryVariableType = {
-        type: formatNativeToken(chainId),
+        type: formatNativeToken(transaction.chainId ?? 1),
         value: transaction.value.toString(),
         unit: 'wei',
       };
diff --git a/src/contextualizers/protocol/friendTech/friendTech.ts b/src/contextualizers/protocol/friendTech/friendTech.ts
index 5ca92df7..007e629d 100644
--- a/src/contextualizers/protocol/friendTech/friendTech.ts
+++ b/src/contextualizers/protocol/friendTech/friendTech.ts
@@ -17,7 +17,6 @@ export const contextualize = (transaction: Transaction): Transaction => {
 
 // Contextualize for txs
 export const generate = (transaction: Transaction): Transaction => {
-  const chainId = transaction.chainId ?? 1;
   // Failed transaction
   if (!transaction.receipt?.status) {
     // buyShares(address sharesSubject, uint256 amount)
@@ -33,7 +32,7 @@ export const generate = (transaction: Transaction): Transaction => {
       transaction.context = {
         variables: {
           price: {
-            type: formatNativeToken(chainId),
+            type: formatNativeToken(transaction.chainId ?? 1),
             value: transaction.value.toString(),
             unit: 'wei',
           },
@@ -114,7 +113,7 @@ export const generate = (transaction: Transaction): Transaction => {
       transaction.context = {
         variables: {
           price: {
-            type: formatNativeToken(chainId),
+            type: formatNativeToken(transaction.chainId ?? 1),
             value: ethAmount,
             unit: 'wei',
           },
@@ -174,7 +173,7 @@ export const generate = (transaction: Transaction): Transaction => {
       transaction.context = {
         variables: {
           price: {
-            type: formatNativeToken(chainId),
+            type: formatNativeToken(transaction.chainId ?? 1),
             value: ethAmount,
             unit: 'wei',
           },
diff --git a/src/contextualizers/protocol/leeroy/leeroy.ts b/src/contextualizers/protocol/leeroy/leeroy.ts
index fae3d87f..50c9c3ec 100644
--- a/src/contextualizers/protocol/leeroy/leeroy.ts
+++ b/src/contextualizers/protocol/leeroy/leeroy.ts
@@ -44,7 +44,6 @@ export const detect = (transaction: Transaction): boolean => {
 
 // Contextualize for mined txs
 export const generate = (transaction: Transaction): Transaction => {
-  const chainId = transaction.chainId ?? 1;
   switch (transaction.sigHash) {
     case '0x8ee93cf3': {
       // post(string)
@@ -214,7 +213,7 @@ export const generate = (transaction: Transaction): Transaction => {
         value: transaction.from,
       };
       const tipAmount: ContextSummaryVariableType = {
-        type: formatNativeToken(chainId),
+        type: formatNativeToken(transaction.chainId ?? 1),
         value: transaction.value.toString(),
         unit: 'wei',
       };
@@ -232,7 +231,7 @@ export const generate = (transaction: Transaction): Transaction => {
         const asset = transaction.netAssetTransfers[transaction.to]
           .received[0] as ETHAsset;
         const leeroyTake: ContextSummaryVariableType = {
-          type: formatNativeToken(chainId),
+          type: formatNativeToken(transaction.chainId ?? 1),
           value: asset.value,
           unit: 'wei',
         };
diff --git a/src/contextualizers/protocol/nouns/auctionHouse.ts b/src/contextualizers/protocol/nouns/auctionHouse.ts
index d742dbb8..9ff7cdac 100644
--- a/src/contextualizers/protocol/nouns/auctionHouse.ts
+++ b/src/contextualizers/protocol/nouns/auctionHouse.ts
@@ -55,7 +55,6 @@ export const generate = (transaction: Transaction): Transaction => {
   );
   if (!decoded) return transaction;
 
-  const chainId = transaction.chainId ?? 1;
   switch (decoded.functionName) {
     case 'createBid': {
       transaction.context = {
@@ -74,7 +73,7 @@ export const generate = (transaction: Transaction): Transaction => {
             tokenId: decoded.args[0].toString(),
           },
           amount: {
-            type: formatNativeToken(chainId),
+            type: formatNativeToken(transaction.chainId ?? 1),
             value: transaction.value.toString(),
             unit: 'wei',
           },
diff --git a/src/contextualizers/protocol/nounsBuilder/auction.ts b/src/contextualizers/protocol/nounsBuilder/auction.ts
index 310373ef..e18a81ae 100644
--- a/src/contextualizers/protocol/nounsBuilder/auction.ts
+++ b/src/contextualizers/protocol/nounsBuilder/auction.ts
@@ -63,8 +63,6 @@ export const generate = (transaction: Transaction): Transaction => {
   );
   if (!decoded) return transaction;
 
-  const chainId = transaction.chainId ?? 1;
-
   switch (decoded.functionName) {
     case 'createBid': {
       const variables: ContextVariable = {
@@ -81,7 +79,7 @@ export const generate = (transaction: Transaction): Transaction => {
           value: decoded.args[0].toString(),
         },
         amount: {
-          type: formatNativeToken(chainId),
+          type: formatNativeToken(transaction.chainId ?? 1),
           value: transaction.value.toString(),
           unit: 'wei',
         },
diff --git a/src/contextualizers/protocol/superchainFaucet/superchainFaucet.ts b/src/contextualizers/protocol/superchainFaucet/superchainFaucet.ts
index dff5c159..366b7808 100644
--- a/src/contextualizers/protocol/superchainFaucet/superchainFaucet.ts
+++ b/src/contextualizers/protocol/superchainFaucet/superchainFaucet.ts
@@ -36,7 +36,7 @@ export function generate(transaction: Transaction): Transaction {
         value: ethTransfer.to,
       },
       amount: {
-        type: formatNativeToken(transaction.chainId),
+        type: formatNativeToken(transaction.chainId ?? 1),
         value: ethTransfer.value,
         unit: 'wei',
       },
diff --git a/src/contextualizers/protocol/uniswapV2/uniswapV2Router.ts b/src/contextualizers/protocol/uniswapV2/uniswapV2Router.ts
index c79f01ed..12c73f80 100644
--- a/src/contextualizers/protocol/uniswapV2/uniswapV2Router.ts
+++ b/src/contextualizers/protocol/uniswapV2/uniswapV2Router.ts
@@ -51,8 +51,6 @@ export const generate = (transaction: Transaction): Transaction => {
   );
   if (!decoded) return transaction;
 
-  const chainId = transaction.chainId ?? 1;
-
   switch (decoded.functionName) {
     case 'addLiquidityETH': {
       transaction.context = {
@@ -66,7 +64,7 @@ export const generate = (transaction: Transaction): Transaction => {
             value: 'ADDED_LIQUIDITY',
           },
           numETH: {
-            type: formatNativeToken(chainId),
+            type: formatNativeToken(transaction.chainId ?? 1),
             value: transaction.value.toString(),
             unit: 'wei',
           },
diff --git a/src/contextualizers/protocol/weth/weth.ts b/src/contextualizers/protocol/weth/weth.ts
index ca9a7869..22b70c8b 100644
--- a/src/contextualizers/protocol/weth/weth.ts
+++ b/src/contextualizers/protocol/weth/weth.ts
@@ -82,7 +82,7 @@ export const generate = (transaction: Transaction): Transaction => {
         value: transaction.from,
       };
       const withdrawalAmount: ContextSummaryVariableType = {
-        type: formatNativeToken(transaction.chainId),
+        type: formatNativeToken(transaction.chainId ?? 1),
         value: decode.args ? decode.args[0].toString() : '0',
         unit: 'wei',
       };
diff --git a/src/contextualizers/protocol/zoraCreator/zoraCreator.ts b/src/contextualizers/protocol/zoraCreator/zoraCreator.ts
index 992dd698..c7835808 100644
--- a/src/contextualizers/protocol/zoraCreator/zoraCreator.ts
+++ b/src/contextualizers/protocol/zoraCreator/zoraCreator.ts
@@ -96,13 +96,13 @@ export const generate = (transaction: Transaction): Transaction => {
         value: sender,
       },
       price: {
-        type: formatNativeToken(transaction.chainId),
+        type: formatNativeToken(transaction.chainId ?? 1),
         value: price,
         unit: 'wei',
       },
       minted: { type: 'contextAction', value: 'MINTED' },
       numOfEth: {
-        type: formatNativeToken(transaction.chainId),
+        type: formatNativeToken(transaction.chainId ?? 1),
         value: decodedLog.args['mintReferralReward'].toString(),
         unit: 'wei',
       },