diff --git a/app/scripts/lib/createRPCMethodTrackingMiddleware.test.js b/app/scripts/lib/createRPCMethodTrackingMiddleware.test.js
index 2f3f563b3594..41b78c080e0c 100644
--- a/app/scripts/lib/createRPCMethodTrackingMiddleware.test.js
+++ b/app/scripts/lib/createRPCMethodTrackingMiddleware.test.js
@@ -79,11 +79,16 @@ function getNext(timeout = 500) {
 const waitForSeconds = async (seconds) =>
   await new Promise((resolve) => setTimeout(resolve, SECOND * seconds));
 
-jest.mock('@metamask/controller-utils', () => ({
-  detectSIWE: jest.fn().mockImplementation(() => {
-    return { isSIWEMessage: false };
-  }),
-}));
+jest.mock('@metamask/controller-utils', () => {
+  const actual = jest.requireActual('@metamask/controller-utils');
+
+  return {
+    ...actual,
+    detectSIWE: jest.fn().mockImplementation(() => {
+      return { isSIWEMessage: false };
+    }),
+  };
+});
 
 describe('createRPCMethodTrackingMiddleware', () => {
   afterEach(() => {
diff --git a/app/scripts/lib/middleware/pending.js b/app/scripts/lib/middleware/pending.js
index 9852d55528ed..9e01d11ffcb2 100644
--- a/app/scripts/lib/middleware/pending.js
+++ b/app/scripts/lib/middleware/pending.js
@@ -13,7 +13,7 @@ export function createPendingNonceMiddleware({ getPendingNonce }) {
       next();
       return;
     }
-    res.result = await getPendingNonce(param);
+    res.result = await getPendingNonce(param, req.networkClientId);
   });
 }
 
diff --git a/app/scripts/lib/transaction/util.test.ts b/app/scripts/lib/transaction/util.test.ts
index 7d27624e8cde..1fc5138b0472 100644
--- a/app/scripts/lib/transaction/util.test.ts
+++ b/app/scripts/lib/transaction/util.test.ts
@@ -139,10 +139,26 @@ describe('Transaction Utils', () => {
         ).toHaveBeenCalledTimes(1);
         expect(
           request.transactionController.addTransaction,
-        ).toHaveBeenCalledWith(
-          TRANSACTION_PARAMS_MOCK,
-          TRANSACTION_OPTIONS_MOCK,
-        );
+        ).toHaveBeenCalledWith(TRANSACTION_PARAMS_MOCK, {
+          ...TRANSACTION_OPTIONS_MOCK,
+        });
+      });
+
+      it('adds transaction with networkClientId if process.env.TRANSACTION_MULTICHAIN is set', async () => {
+        process.env.TRANSACTION_MULTICHAIN = '1';
+
+        await addTransaction(request);
+
+        expect(
+          request.transactionController.addTransaction,
+        ).toHaveBeenCalledTimes(1);
+        expect(
+          request.transactionController.addTransaction,
+        ).toHaveBeenCalledWith(TRANSACTION_PARAMS_MOCK, {
+          ...TRANSACTION_OPTIONS_MOCK,
+          networkClientId: 'mockNetworkClientId',
+        });
+        process.env.TRANSACTION_MULTICHAIN = '';
       });
 
       it('returns transaction meta', async () => {
@@ -418,10 +434,9 @@ describe('Transaction Utils', () => {
         ).toHaveBeenCalledTimes(1);
         expect(
           request.transactionController.addTransaction,
-        ).toHaveBeenCalledWith(
-          TRANSACTION_PARAMS_MOCK,
-          TRANSACTION_OPTIONS_MOCK,
-        );
+        ).toHaveBeenCalledWith(TRANSACTION_PARAMS_MOCK, {
+          ...TRANSACTION_OPTIONS_MOCK,
+        });
 
         expect(request.ppomController.usePPOM).toHaveBeenCalledTimes(0);
       });
@@ -484,10 +499,9 @@ describe('Transaction Utils', () => {
         ).toHaveBeenCalledTimes(1);
         expect(
           request.transactionController.addTransaction,
-        ).toHaveBeenCalledWith(
-          TRANSACTION_PARAMS_MOCK,
-          TRANSACTION_OPTIONS_MOCK,
-        );
+        ).toHaveBeenCalledWith(TRANSACTION_PARAMS_MOCK, {
+          ...TRANSACTION_OPTIONS_MOCK,
+        });
 
         expect(request.ppomController.usePPOM).toHaveBeenCalledTimes(0);
       });
@@ -504,10 +518,9 @@ describe('Transaction Utils', () => {
         ).toHaveBeenCalledTimes(1);
         expect(
           request.transactionController.addTransaction,
-        ).toHaveBeenCalledWith(
-          TRANSACTION_PARAMS_MOCK,
-          TRANSACTION_OPTIONS_MOCK,
-        );
+        ).toHaveBeenCalledWith(TRANSACTION_PARAMS_MOCK, {
+          ...TRANSACTION_OPTIONS_MOCK,
+        });
 
         expect(request.ppomController.usePPOM).toHaveBeenCalledTimes(0);
       });
@@ -533,6 +546,27 @@ describe('Transaction Utils', () => {
         });
       });
 
+      it('adds transaction with networkClientId if process.env.TRANSACTION_MULTICHAIN is set', async () => {
+        process.env.TRANSACTION_MULTICHAIN = '1';
+
+        await addDappTransaction(dappRequest);
+
+        expect(
+          request.transactionController.addTransaction,
+        ).toHaveBeenCalledTimes(1);
+        expect(
+          request.transactionController.addTransaction,
+        ).toHaveBeenCalledWith(TRANSACTION_PARAMS_MOCK, {
+          ...TRANSACTION_OPTIONS_MOCK,
+          networkClientId: 'mockNetworkClientId',
+          method: DAPP_REQUEST_MOCK.method,
+          requireApproval: true,
+          securityAlertResponse: DAPP_REQUEST_MOCK.securityAlertResponse,
+          type: undefined,
+        });
+        process.env.TRANSACTION_MULTICHAIN = '';
+      });
+
       it('returns transaction hash', async () => {
         const transactionHash = await addDappTransaction(dappRequest);
         expect(transactionHash).toStrictEqual(TRANSACTION_META_MOCK.hash);
diff --git a/app/scripts/lib/transaction/util.ts b/app/scripts/lib/transaction/util.ts
index 5c0516eb7c2e..2e42719f98ea 100644
--- a/app/scripts/lib/transaction/util.ts
+++ b/app/scripts/lib/transaction/util.ts
@@ -238,13 +238,17 @@ async function addTransactionOrUserOperation(
 async function addTransactionWithController(
   request: FinalAddTransactionRequest,
 ) {
-  const { transactionController, transactionOptions, transactionParams } =
-    request;
+  const {
+    transactionController,
+    transactionOptions,
+    transactionParams,
+    networkClientId,
+  } = request;
   const { result, transactionMeta } =
-    await transactionController.addTransaction(
-      transactionParams,
-      transactionOptions,
-    );
+    await transactionController.addTransaction(transactionParams, {
+      ...transactionOptions,
+      ...(process.env.TRANSACTION_MULTICHAIN ? { networkClientId } : {}),
+    });
 
   return {
     transactionMeta,
diff --git a/app/scripts/metamask-controller.js b/app/scripts/metamask-controller.js
index 4f9d2e67dea1..126ab3ffb981 100644
--- a/app/scripts/metamask-controller.js
+++ b/app/scripts/metamask-controller.js
@@ -1470,6 +1470,10 @@ export default class MetamaskController extends EventEmitter {
         getGasFeeEstimates: this.gasFeeController.fetchGasFeeEstimates.bind(
           this.gasFeeController,
         ),
+        getNetworkClientRegistry:
+          this.networkController.getNetworkClientRegistry.bind(
+            this.networkController,
+          ),
         getNetworkState: () => this.networkController.state,
         getPermittedAccounts: this.getPermittedAccounts.bind(this),
         getSavedGasFees: () =>
@@ -1478,6 +1482,7 @@ export default class MetamaskController extends EventEmitter {
           ],
         getSelectedAddress: () =>
           this.accountsController.getSelectedAccount().address,
+        isMultichainEnabled: process.env.TRANSACTION_MULTICHAIN,
         incomingTransactions: {
           includeTokenTransfers: false,
           isEnabled: () =>
@@ -1493,7 +1498,12 @@ export default class MetamaskController extends EventEmitter {
         },
         messenger: this.controllerMessenger.getRestricted({
           name: 'TransactionController',
-          allowedActions: [`${this.approvalController.name}:addRequest`],
+          allowedActions: [
+            `${this.approvalController.name}:addRequest`,
+            'NetworkController:findNetworkClientIdByChainId',
+            'NetworkController:getNetworkClientById',
+          ],
+          allowedEvents: [`NetworkController:stateChange`],
         }),
         onNetworkStateChange: (listener) => {
           networkControllerMessenger.subscribe(
@@ -4241,7 +4251,9 @@ export default class MetamaskController extends EventEmitter {
   }) {
     return {
       dappRequest,
-      networkClientId: this.networkController.state.selectedNetworkClientId,
+      networkClientId:
+        dappRequest?.networkClientId ??
+        this.networkController.state.selectedNetworkClientId,
       selectedAccount: this.accountsController.getSelectedAccount(),
       transactionController: this.txController,
       transactionOptions,
@@ -5308,11 +5320,13 @@ export default class MetamaskController extends EventEmitter {
    * Returns the nonce that will be associated with a transaction once approved
    *
    * @param {string} address - The hex string address for the transaction
+   * @param networkClientId - The optional networkClientId to get the nonce lock with
    * @returns {Promise<number>}
    */
-  async getPendingNonce(address) {
+  async getPendingNonce(address, networkClientId) {
     const { nonceDetails, releaseLock } = await this.txController.getNonceLock(
       address,
+      process.env.TRANSACTION_MULTICHAIN ? networkClientId : undefined,
     );
 
     const pendingNonce = nonceDetails.params.highestSuggested;
@@ -5325,10 +5339,14 @@ export default class MetamaskController extends EventEmitter {
    * Returns the next nonce according to the nonce-tracker
    *
    * @param {string} address - The hex string address for the transaction
+   * @param networkClientId - The optional networkClientId to get the nonce lock with
    * @returns {Promise<number>}
    */
-  async getNextNonce(address) {
-    const nonceLock = await this.txController.getNonceLock(address);
+  async getNextNonce(address, networkClientId) {
+    const nonceLock = await this.txController.getNonceLock(
+      address,
+      process.env.TRANSACTION_MULTICHAIN ? networkClientId : undefined,
+    );
     nonceLock.releaseLock();
     return nonceLock.nextNonce;
   }
diff --git a/builds.yml b/builds.yml
index 978ae5086e35..3d282460eebd 100644
--- a/builds.yml
+++ b/builds.yml
@@ -261,6 +261,8 @@ env:
   - BLOCKAID_PUBLIC_KEY
   # Determines if feature flagged Multichain UI should be used
   - MULTICHAIN: ''
+  # Determines if feature flagged Multichain Transactions should be used
+  - TRANSACTION_MULTICHAIN: ''
 
   ###
   # Meta variables
diff --git a/lavamoat/browserify/beta/policy.json b/lavamoat/browserify/beta/policy.json
index 079a449c78c6..c1e2e6710da5 100644
--- a/lavamoat/browserify/beta/policy.json
+++ b/lavamoat/browserify/beta/policy.json
@@ -47,7 +47,7 @@
         "TextEncoder": true
       },
       "packages": {
-        "@metamask/assets-controllers>multiformats": true
+        "@ensdomains/content-hash>cids>multibase": true
       }
     },
     "@ensdomains/content-hash>js-base64": {
@@ -1981,6 +1981,7 @@
         "@metamask/eth-query": true,
         "@metamask/gas-fee-controller": true,
         "@metamask/metamask-eth-abis": true,
+        "@metamask/network-controller": true,
         "@metamask/providers>@metamask/rpc-errors": true,
         "@metamask/transaction-controller>nonce-tracker": true,
         "@metamask/utils": true,
diff --git a/lavamoat/browserify/desktop/policy.json b/lavamoat/browserify/desktop/policy.json
index 1fd9c4de9a36..e36bcc712c09 100644
--- a/lavamoat/browserify/desktop/policy.json
+++ b/lavamoat/browserify/desktop/policy.json
@@ -47,7 +47,7 @@
         "TextEncoder": true
       },
       "packages": {
-        "@metamask/assets-controllers>multiformats": true
+        "@ensdomains/content-hash>cids>multibase": true
       }
     },
     "@ensdomains/content-hash>js-base64": {
@@ -2234,6 +2234,7 @@
         "@metamask/eth-query": true,
         "@metamask/gas-fee-controller": true,
         "@metamask/metamask-eth-abis": true,
+        "@metamask/network-controller": true,
         "@metamask/providers>@metamask/rpc-errors": true,
         "@metamask/transaction-controller>nonce-tracker": true,
         "@metamask/utils": true,
diff --git a/lavamoat/browserify/flask/policy.json b/lavamoat/browserify/flask/policy.json
index 73cf28268c16..8388ecd2f18b 100644
--- a/lavamoat/browserify/flask/policy.json
+++ b/lavamoat/browserify/flask/policy.json
@@ -47,7 +47,7 @@
         "TextEncoder": true
       },
       "packages": {
-        "@metamask/assets-controllers>multiformats": true
+        "@ensdomains/content-hash>cids>multibase": true
       }
     },
     "@ensdomains/content-hash>js-base64": {
@@ -2268,6 +2268,7 @@
         "@metamask/eth-query": true,
         "@metamask/gas-fee-controller": true,
         "@metamask/metamask-eth-abis": true,
+        "@metamask/network-controller": true,
         "@metamask/providers>@metamask/rpc-errors": true,
         "@metamask/transaction-controller>nonce-tracker": true,
         "@metamask/utils": true,
diff --git a/lavamoat/browserify/main/policy.json b/lavamoat/browserify/main/policy.json
index 475459af8e30..8f52bd14b2d7 100644
--- a/lavamoat/browserify/main/policy.json
+++ b/lavamoat/browserify/main/policy.json
@@ -47,7 +47,7 @@
         "TextEncoder": true
       },
       "packages": {
-        "@metamask/assets-controllers>multiformats": true
+        "@ensdomains/content-hash>cids>multibase": true
       }
     },
     "@ensdomains/content-hash>js-base64": {
@@ -2191,6 +2191,7 @@
         "@metamask/eth-query": true,
         "@metamask/gas-fee-controller": true,
         "@metamask/metamask-eth-abis": true,
+        "@metamask/network-controller": true,
         "@metamask/providers>@metamask/rpc-errors": true,
         "@metamask/transaction-controller>nonce-tracker": true,
         "@metamask/utils": true,
diff --git a/lavamoat/browserify/mmi/policy.json b/lavamoat/browserify/mmi/policy.json
index 9167168c8b40..6cd1fa3f0130 100644
--- a/lavamoat/browserify/mmi/policy.json
+++ b/lavamoat/browserify/mmi/policy.json
@@ -47,7 +47,7 @@
         "TextEncoder": true
       },
       "packages": {
-        "@metamask/assets-controllers>multiformats": true
+        "@ensdomains/content-hash>cids>multibase": true
       }
     },
     "@ensdomains/content-hash>js-base64": {
@@ -2289,6 +2289,7 @@
         "@metamask/eth-query": true,
         "@metamask/gas-fee-controller": true,
         "@metamask/metamask-eth-abis": true,
+        "@metamask/network-controller": true,
         "@metamask/providers>@metamask/rpc-errors": true,
         "@metamask/transaction-controller>nonce-tracker": true,
         "@metamask/utils": true,
diff --git a/package.json b/package.json
index 6d8f589a6a83..261b6b384ead 100644
--- a/package.json
+++ b/package.json
@@ -225,7 +225,7 @@
   "dependencies": {
     "@babel/runtime": "^7.23.2",
     "@blockaid/ppom_release": "^1.4.1",
-    "@ensdomains/content-hash": "^2.5.6",
+    "@ensdomains/content-hash": "^2.5.7",
     "@ethereumjs/common": "^3.1.1",
     "@ethereumjs/tx": "^4.1.1",
     "@ethersproject/abi": "^5.6.4",
@@ -298,7 +298,7 @@
     "@metamask/snaps-rpc-methods": "^6.0.0",
     "@metamask/snaps-sdk": "^2.1.0",
     "@metamask/snaps-utils": "^6.1.0",
-    "@metamask/transaction-controller": "^22.0.0",
+    "@metamask/transaction-controller": "^23.0.0",
     "@metamask/user-operation-controller": "^1.0.0",
     "@metamask/utils": "^8.2.1",
     "@ngraveio/bc-ur": "^1.1.6",
diff --git a/ui/store/actions.ts b/ui/store/actions.ts
index 7364336a8cd4..560c5cee9b38 100644
--- a/ui/store/actions.ts
+++ b/ui/store/actions.ts
@@ -57,6 +57,7 @@ import {
   ///: END:ONLY_INCLUDE_IF
   getInternalAccountByAddress,
   getSelectedInternalAccount,
+  getSelectedNetworkClientId,
 } from '../selectors';
 import {
   computeEstimatedGasLimit,
@@ -4087,10 +4088,12 @@ export function getNextNonce(): ThunkAction<
 > {
   return async (dispatch, getState) => {
     const { address } = getSelectedInternalAccount(getState());
+    const networkClientId = getSelectedNetworkClientId(getState());
     let nextNonce;
     try {
       nextNonce = await submitRequestToBackground<string>('getNextNonce', [
         address,
+        networkClientId,
       ]);
     } catch (error) {
       dispatch(displayWarning(error));
diff --git a/yarn.lock b/yarn.lock
index f194eae49234..f9d7ad9d1f14 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1910,7 +1910,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@ensdomains/content-hash@npm:^2.5.6":
+"@ensdomains/content-hash@npm:^2.5.7":
   version: 2.5.7
   resolution: "@ensdomains/content-hash@npm:2.5.7"
   dependencies:
@@ -5415,9 +5415,9 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@metamask/transaction-controller@npm:^22.0.0":
-  version: 22.0.0
-  resolution: "@metamask/transaction-controller@npm:22.0.0"
+"@metamask/transaction-controller@npm:^23.0.0":
+  version: 23.0.0
+  resolution: "@metamask/transaction-controller@npm:23.0.0"
   dependencies:
     "@ethereumjs/common": "npm:^3.2.0"
     "@ethereumjs/tx": "npm:^4.2.0"
@@ -5443,7 +5443,7 @@ __metadata:
     "@metamask/approval-controller": ^5.1.2
     "@metamask/gas-fee-controller": ^13.0.0
     "@metamask/network-controller": ^17.2.0
-  checksum: 58c212278bcb0abcfb9114f56f5d5167bd1b1a6873811583e327aa89008ff67a9362d1cd0a4481d503b1f81a25495c3c05cbd666502e35e48a45b54d82b740c9
+  checksum: a81e9253cfe44f7150550cdb9e67b5d5b51dd383f6d7c026891219cd556b98713ccf4e94ba0b91b8f1fd09ba07efd124e226c8ede21e52cf6e21e76c7c5e37af
   languageName: node
   linkType: hard
 
@@ -19595,8 +19595,8 @@ __metadata:
   linkType: hard
 
 "gridplus-sdk@npm:^2.5.1":
-  version: 2.5.2
-  resolution: "gridplus-sdk@npm:2.5.2"
+  version: 2.5.1
+  resolution: "gridplus-sdk@npm:2.5.1"
   dependencies:
     "@ethereumjs/common": "npm:3.1.1"
     "@ethereumjs/tx": "npm:4.1.1"
@@ -19617,7 +19617,7 @@ __metadata:
     rlp: "npm:^3.0.0"
     secp256k1: "npm:4.0.2"
     uuid: "npm:^9.0.0"
-  checksum: 566a9cb7a028cd9f9b650aab3d93c32b88eb4fa7bdf44b506b4cdc85e27dc91dbd3f3297aeed0e8abe8135dc7fbfce6c7d0381d26ab88a51acf4d90195140369
+  checksum: 57deeae78fc5f904309e689054baabaed8b078b896ecfd5d724889c6ea424a113db64c3fd79d4dca7cc5f558167d7af754506df5c0692ee76087822ae60c3873
   languageName: node
   linkType: hard
 
@@ -24608,7 +24608,7 @@ __metadata:
     "@babel/register": "npm:^7.22.15"
     "@babel/runtime": "npm:^7.23.2"
     "@blockaid/ppom_release": "npm:^1.4.1"
-    "@ensdomains/content-hash": "npm:^2.5.6"
+    "@ensdomains/content-hash": "npm:^2.5.7"
     "@ethereumjs/common": "npm:^3.1.1"
     "@ethereumjs/tx": "npm:^4.1.1"
     "@ethersproject/abi": "npm:^5.6.4"
@@ -24694,7 +24694,7 @@ __metadata:
     "@metamask/snaps-sdk": "npm:^2.1.0"
     "@metamask/snaps-utils": "npm:^6.1.0"
     "@metamask/test-dapp": "npm:^7.3.1"
-    "@metamask/transaction-controller": "npm:^22.0.0"
+    "@metamask/transaction-controller": "npm:^23.0.0"
     "@metamask/user-operation-controller": "npm:^1.0.0"
     "@metamask/utils": "npm:^8.2.1"
     "@ngraveio/bc-ur": "npm:^1.1.6"
@@ -33709,11 +33709,11 @@ __metadata:
   linkType: hard
 
 "uint8arrays@npm:^2.1.3":
-  version: 2.1.10
-  resolution: "uint8arrays@npm:2.1.10"
+  version: 2.1.5
+  resolution: "uint8arrays@npm:2.1.5"
   dependencies:
-    multiformats: "npm:^9.4.2"
-  checksum: 63ceb5fecc09de69641531c847e0b435d15a73587e40d4db23ed9b8a1ebbe839ae39fe81a15ea6079cdf642fcf2583983f9a5d32726edc4bc5e87634f34e3bd5
+    multibase: "npm:^4.0.1"
+  checksum: 521a120ad21250004a95330d0501c87344c5072376b5d5d9ef642721f7913cc1880b823715e5d8829307a9dda73c3064283cb3a7442f0e85fef781cfca4f0334
   languageName: node
   linkType: hard