diff --git a/yarn-project/aztec.js/Dockerfile b/yarn-project/aztec.js/Dockerfile
index 2e4ade811397..897d53e6feb6 100644
--- a/yarn-project/aztec.js/Dockerfile
+++ b/yarn-project/aztec.js/Dockerfile
@@ -1,6 +1,6 @@
 FROM 278380418400.dkr.ecr.eu-west-2.amazonaws.com/yarn-project-base AS builder
 COPY . .
-RUN cd aztec-js && yarn build
+RUN cd aztec.js && yarn build
 WORKDIR /usr/src/yarn-project/aztec.js
 RUN yarn build && yarn formatting && yarn test
 
diff --git a/yarn-project/aztec.js/package.json b/yarn-project/aztec.js/package.json
index 00390360420b..355088819b89 100644
--- a/yarn-project/aztec.js/package.json
+++ b/yarn-project/aztec.js/package.json
@@ -31,6 +31,7 @@
   "dependencies": {
     "@aztec/aztec-rpc": "workspace:^",
     "@aztec/foundation": "workspace:^",
+    "@aztec/sequencer-client": "workspace:^",
     "@aztec/tx": "workspace:^",
     "tslib": "^2.4.0"
   },
diff --git a/yarn-project/end-to-end/src/e2e_zk_token_contract.test.ts b/yarn-project/end-to-end/src/e2e_zk_token_contract.test.ts
index 6fe9a49a39ab..b0405c817014 100644
--- a/yarn-project/end-to-end/src/e2e_zk_token_contract.test.ts
+++ b/yarn-project/end-to-end/src/e2e_zk_token_contract.test.ts
@@ -1,114 +1,114 @@
-import { AztecNode } from '@aztec/aztec-node';
-import { AztecAddress, AztecRPCServer, Contract, ContractDeployer, Fr } from '@aztec/aztec.js';
-import { EthAddress } from '@aztec/ethereum.js/eth_address';
-import { EthereumRpc } from '@aztec/ethereum.js/eth_rpc';
-import { WalletProvider } from '@aztec/ethereum.js/provider';
-import { createDebugLogger } from '@aztec/foundation';
-import { ZkTokenContractAbi } from '@aztec/noir-contracts/examples';
-import { createAztecNode } from './create_aztec_node.js';
-import { createAztecRpcServer } from './create_aztec_rpc_client.js';
-import { createProvider, deployRollupContract, deployYeeterContract } from './deploy_l1_contracts.js';
-
-const ETHEREUM_HOST = 'http://localhost:8545';
-const MNEMONIC = 'test test test test test test test test test test test junk';
-
-const logger = createDebugLogger('aztec:e2e_zk_token_contract');
-
-describe('e2e_zk_token_contract', () => {
-  let provider: WalletProvider;
-  let node: AztecNode;
-  let aztecRpcServer: AztecRPCServer;
-  let rollupAddress: EthAddress;
-  let yeeterAddress: EthAddress;
-  let accounts: AztecAddress[];
-  let contract: Contract;
-
-  beforeAll(async () => {
-    provider = createProvider(ETHEREUM_HOST, MNEMONIC, 1);
-    const ethRpc = new EthereumRpc(provider);
-    logger('Deploying contracts...');
-    rollupAddress = await deployRollupContract(provider, ethRpc);
-    yeeterAddress = await deployYeeterContract(provider, ethRpc);
-    logger('Deployed contracts...');
-  });
-
-  beforeEach(async () => {
-    node = await createAztecNode(rollupAddress, yeeterAddress, ETHEREUM_HOST, provider.getPrivateKey(0)!);
-    aztecRpcServer = await createAztecRpcServer(1, node);
-    accounts = await aztecRpcServer.getAccounts();
-  });
-
-  afterEach(async () => {
-    await node.stop();
-    await aztecRpcServer.stop();
-  });
-
-  const expectStorageSlot = async (accountIdx: number, expectedBalance: bigint) => {
-    // We only generate 1 note in each test. Balance is the first field of the only note.
-    // TBD - how to calculate storage slot?
-    const storageSlot = Fr.ZERO;
-    const [[balance]] = await aztecRpcServer.getStorageAt(contract.address, storageSlot);
-    logger(`Account ${accountIdx} balance: ${balance}`);
-    expect(balance).toBe(expectedBalance);
-  };
-
-  const expectBalance = async (accountIdx: number, expectedBalance: bigint) => {
-    const balance = await contract.methods.getBalance().call({ from: accounts[accountIdx] });
-    logger(`Account ${accountIdx} balance: ${balance}`);
-    expect(balance).toBe(expectedBalance);
-  };
-
-  const deployContract = async (initialBalance = 0n) => {
-    const deployer = new ContractDeployer(ZkTokenContractAbi, aztecRpcServer);
-    const receipt = await deployer.deploy(initialBalance).send().getReceipt();
-    return new Contract(receipt.contractAddress!, ZkTokenContractAbi, aztecRpcServer);
-  };
-
-  /**
-   * Milestone 1.3
-   * https://hackmd.io/AG5rb9DyTRu3y7mBptWauA
-   */
-  it.skip('should deploy zk token contract with initial token minted to the account', async () => {
-    const initialBalance = 987n;
-    await deployContract(initialBalance);
-    await expectStorageSlot(0, initialBalance);
-    await expectStorageSlot(1, 0n);
-  });
-
-  /**
-   * Milestone 1.4
-   */
-  it.skip('should call mint and increase balance', async () => {
-    const mintAmount = 65n;
-
-    await deployContract();
-
-    await expectStorageSlot(0, 0n);
-    await expectStorageSlot(1, 0n);
-
-    const receipt = await contract.methods.mint(mintAmount).send({ from: accounts[1] }).getReceipt();
-    expect(receipt.status).toBe(true);
-
-    await expectStorageSlot(0, 0n);
-    await expectStorageSlot(1, mintAmount);
-  });
-
-  /**
-   * Milestone 1.5
-   */
-  it.skip('should call transfer and increase balance of another account', async () => {
-    const initialBalance = 987n;
-    const transferAmount = 654n;
-
-    await deployContract(initialBalance);
-
-    await expectBalance(0, initialBalance);
-    await expectBalance(1, 0n);
-
-    const receipt = await contract.methods.transfer(accounts[1]).send({ from: accounts[0] }).getReceipt();
-    expect(receipt.status).toBe(true);
-
-    await expectBalance(0, initialBalance - transferAmount);
-    await expectBalance(1, transferAmount);
-  });
-});
+// import { AztecNode } from '@aztec/aztec-node';
+// import { AztecAddress, AztecRPCServer, Contract, ContractDeployer, Fr } from '@aztec/aztec.js';
+// import { EthAddress } from '@aztec/ethereum.js/eth_address';
+// import { EthereumRpc } from '@aztec/ethereum.js/eth_rpc';
+// import { WalletProvider } from '@aztec/ethereum.js/provider';
+// import { createDebugLogger } from '@aztec/foundation';
+// import { ZkTokenContractAbi } from '@aztec/noir-contracts/examples';
+// import { createAztecNode } from './create_aztec_node.js';
+// import { createAztecRpcServer } from './create_aztec_rpc_client.js';
+// import { createProvider, deployRollupContract, deployYeeterContract } from './deploy_l1_contracts.js';
+
+// const ETHEREUM_HOST = 'http://localhost:8545';
+// const MNEMONIC = 'test test test test test test test test test test test junk';
+
+// const logger = createDebugLogger('aztec:e2e_zk_token_contract');
+
+// describe('e2e_zk_token_contract', () => {
+//   let provider: WalletProvider;
+//   let node: AztecNode;
+//   let aztecRpcServer: AztecRPCServer;
+//   let rollupAddress: EthAddress;
+//   let yeeterAddress: EthAddress;
+//   let accounts: AztecAddress[];
+//   let contract: Contract;
+
+//   beforeAll(async () => {
+//     provider = createProvider(ETHEREUM_HOST, MNEMONIC, 1);
+//     const ethRpc = new EthereumRpc(provider);
+//     logger('Deploying contracts...');
+//     rollupAddress = await deployRollupContract(provider, ethRpc);
+//     yeeterAddress = await deployYeeterContract(provider, ethRpc);
+//     logger('Deployed contracts...');
+//   });
+
+//   beforeEach(async () => {
+//     node = await createAztecNode(rollupAddress, yeeterAddress, ETHEREUM_HOST, provider.getPrivateKey(0)!);
+//     aztecRpcServer = await createAztecRpcServer(1, node);
+//     accounts = await aztecRpcServer.getAccounts();
+//   });
+
+//   afterEach(async () => {
+//     await node.stop();
+//     await aztecRpcServer.stop();
+//   });
+
+//   const expectStorageSlot = async (accountIdx: number, expectedBalance: bigint) => {
+//     // We only generate 1 note in each test. Balance is the first field of the only note.
+//     // TBD - how to calculate storage slot?
+//     const storageSlot = Fr.ZERO;
+//     const [[balance]] = await aztecRpcServer.getStorageAt(contract.address, storageSlot);
+//     logger(`Account ${accountIdx} balance: ${balance}`);
+//     expect(balance).toBe(expectedBalance);
+//   };
+
+//   const expectBalance = async (accountIdx: number, expectedBalance: bigint) => {
+//     const balance = await contract.methods.getBalance().call({ from: accounts[accountIdx] });
+//     logger(`Account ${accountIdx} balance: ${balance}`);
+//     expect(balance).toBe(expectedBalance);
+//   };
+
+//   const deployContract = async (initialBalance = 0n) => {
+//     const deployer = new ContractDeployer(ZkTokenContractAbi, aztecRpcServer);
+//     const receipt = await deployer.deploy(initialBalance).send().getReceipt();
+//     return new Contract(receipt.contractAddress!, ZkTokenContractAbi, aztecRpcServer);
+//   };
+
+//   /**
+//    * Milestone 1.3
+//    * https://hackmd.io/AG5rb9DyTRu3y7mBptWauA
+//    */
+//   it.skip('should deploy zk token contract with initial token minted to the account', async () => {
+//     const initialBalance = 987n;
+//     await deployContract(initialBalance);
+//     await expectStorageSlot(0, initialBalance);
+//     await expectStorageSlot(1, 0n);
+//   });
+
+//   /**
+//    * Milestone 1.4
+//    */
+//   it.skip('should call mint and increase balance', async () => {
+//     const mintAmount = 65n;
+
+//     await deployContract();
+
+//     await expectStorageSlot(0, 0n);
+//     await expectStorageSlot(1, 0n);
+
+//     const receipt = await contract.methods.mint(mintAmount).send({ from: accounts[1] }).getReceipt();
+//     expect(receipt.status).toBe(true);
+
+//     await expectStorageSlot(0, 0n);
+//     await expectStorageSlot(1, mintAmount);
+//   });
+
+//   /**
+//    * Milestone 1.5
+//    */
+//   it.skip('should call transfer and increase balance of another account', async () => {
+//     const initialBalance = 987n;
+//     const transferAmount = 654n;
+
+//     await deployContract(initialBalance);
+
+//     await expectBalance(0, initialBalance);
+//     await expectBalance(1, 0n);
+
+//     const receipt = await contract.methods.transfer(accounts[1]).send({ from: accounts[0] }).getReceipt();
+//     expect(receipt.status).toBe(true);
+
+//     await expectBalance(0, initialBalance - transferAmount);
+//     await expectBalance(1, transferAmount);
+//   });
+// });
diff --git a/yarn-project/sequencer-client/src/sequencer/circuit_powered_block_builder.test.ts b/yarn-project/sequencer-client/src/sequencer/circuit_powered_block_builder.test.ts
index ac7333197dbe..d99c4a17b541 100644
--- a/yarn-project/sequencer-client/src/sequencer/circuit_powered_block_builder.test.ts
+++ b/yarn-project/sequencer-client/src/sequencer/circuit_powered_block_builder.test.ts
@@ -44,6 +44,7 @@ describe('sequencer/circuit_block_builder', () => {
   let wasm: BarretenbergWasm;
 
   const emptyProof = new UInt8Vector(Buffer.alloc(32, 0));
+  const emptyUnverifiedData = Buffer.alloc(0);
 
   beforeAll(async () => {
     wasm = new BarretenbergWasm();
@@ -83,9 +84,6 @@ describe('sequencer/circuit_block_builder', () => {
       [MerkleTreeId.DATA_TREE, MerkleTreeId.DATA_TREE_ROOTS_TREE],
       [MerkleTreeId.CONTRACT_TREE, MerkleTreeId.CONTRACT_TREE_ROOTS_TREE],
     ] as const) {
-      if (rootTree === MerkleTreeId.CONTRACT_TREE_ROOTS_TREE) {
-        await inspectTree(expectsDb, rootTree);
-      }
       const newTreeInfo = await expectsDb.getTreeInfo(newTree);
       await expectsDb.appendLeaves(rootTree, [newTreeInfo.root]);
     }
@@ -109,7 +107,7 @@ describe('sequencer/circuit_block_builder', () => {
 
   it('builds an L2 block', async () => {
     // Assemble a fake transaction, we'll tweak some fields below
-    const tx = new Tx(makePrivateKernelPublicInputs(), emptyProof);
+    const tx = new Tx(makePrivateKernelPublicInputs(), emptyProof, emptyUnverifiedData);
     const txsLeft = [tx, makeEmptyTx()];
     const txsRight = [makeEmptyTx(), makeEmptyTx()];
     const txs = [...txsLeft, ...txsRight];
@@ -129,8 +127,6 @@ describe('sequencer/circuit_block_builder', () => {
     baseRollupOutputLeft.endNullifierTreeSnapshot = await getTreeSnapshot(MerkleTreeId.NULLIFIER_TREE);
     baseRollupOutputLeft.endPrivateDataTreeSnapshot = await getTreeSnapshot(MerkleTreeId.DATA_TREE);
 
-    await inspectTree(expectsDb, MerkleTreeId.CONTRACT_TREE);
-
     // Same for the two txs on the right
     await updateExpectedTreesFromTxs(txsRight);
     baseRollupOutputRight.endContractTreeSnapshot = await getTreeSnapshot(MerkleTreeId.CONTRACT_TREE);
diff --git a/yarn-project/sequencer-client/src/sequencer/circuit_powered_block_builder.ts b/yarn-project/sequencer-client/src/sequencer/circuit_powered_block_builder.ts
index 170a5851991c..6f6ec48a5824 100644
--- a/yarn-project/sequencer-client/src/sequencer/circuit_powered_block_builder.ts
+++ b/yarn-project/sequencer-client/src/sequencer/circuit_powered_block_builder.ts
@@ -14,6 +14,7 @@ import {
   PreviousKernelData,
   PreviousRollupData,
   PRIVATE_DATA_TREE_ROOTS_TREE_HEIGHT,
+  ROLLUP_VK_TREE_HEIGHT,
   RootRollupInputs,
   RootRollupPublicInputs,
   UInt8Vector,
@@ -274,7 +275,7 @@ export class CircuitPoweredBlockBuilder {
 
       // MembershipWitness for a VK tree to be implemented in the future
       FUTURE_NUM,
-      Array(VK_TREE_HEIGHT).fill(FUTURE_FR),
+      new MembershipWitness(ROLLUP_VK_TREE_HEIGHT, FUTURE_NUM, Array(ROLLUP_VK_TREE_HEIGHT).fill(FUTURE_FR)),
     );
   }
 
diff --git a/yarn-project/world-state/src/world-state-db/index.ts b/yarn-project/world-state/src/world-state-db/index.ts
index 481a48450133..b828e78a7de9 100644
--- a/yarn-project/world-state/src/world-state-db/index.ts
+++ b/yarn-project/world-state/src/world-state-db/index.ts
@@ -63,7 +63,7 @@ export interface MerkleTreeDb extends MerkleTreeOperations {
  */
 export async function inspectTree(db: MerkleTreeOperations, treeId: MerkleTreeId) {
   const info = await db.getTreeInfo(treeId);
-  let output = [`Tree id=${treeId} size=${info.size} root=0x${info.root.toString('hex')}`];
+  const output = [`Tree id=${treeId} size=${info.size} root=0x${info.root.toString('hex')}`];
   for (let i = 0; i < info.size; i++) {
     output.push(
       ` Leaf ${i}: ${await db.getLeafValue(treeId, BigInt(i)).then(x => x?.toString('hex') ?? '[undefined]')}`,
diff --git a/yarn-project/yarn.lock b/yarn-project/yarn.lock
index b608472236a9..dc4834d95d2f 100644
--- a/yarn-project/yarn.lock
+++ b/yarn-project/yarn.lock
@@ -138,6 +138,7 @@ __metadata:
   dependencies:
     "@aztec/aztec-rpc": "workspace:^"
     "@aztec/foundation": "workspace:^"
+    "@aztec/sequencer-client": "workspace:^"
     "@aztec/tx": "workspace:^"
     "@jest/globals": ^29.4.3
     "@rushstack/eslint-patch": ^1.1.4