diff --git a/.changeset/new-owls-scream.md b/.changeset/new-owls-scream.md
new file mode 100644
index 0000000000000..41d8a6b2e704b
--- /dev/null
+++ b/.changeset/new-owls-scream.md
@@ -0,0 +1,6 @@
+---
+"@eth-optimism/batch-submitter": patch
+"@eth-optimism/core-utils": patch
+---
+
+migrate batch submitter types to core-utils
diff --git a/packages/batch-submitter/src/batch-submitter/batch-submitter.ts b/packages/batch-submitter/src/batch-submitter/batch-submitter.ts
index 954c003a59d4a..24e5f63df6f47 100644
--- a/packages/batch-submitter/src/batch-submitter/batch-submitter.ts
+++ b/packages/batch-submitter/src/batch-submitter/batch-submitter.ts
@@ -2,21 +2,9 @@
 import { Contract, Signer, utils, providers } from 'ethers'
 import { TransactionReceipt } from '@ethersproject/abstract-provider'
 import * as ynatm from '@eth-optimism/ynatm'
-import { Logger, Metrics } from '@eth-optimism/core-utils'
+import { RollupInfo, Logger, Metrics } from '@eth-optimism/core-utils'
 import { getContractFactory } from 'old-contracts'
 
-export interface RollupInfo {
-  mode: 'sequencer' | 'verifier'
-  syncing: boolean
-  ethContext: {
-    blockNumber: number
-    timestamp: number
-  }
-  rollupContext: {
-    index: number
-    queueIndex: number
-  }
-}
 export interface Range {
   start: number
   end: number
diff --git a/packages/batch-submitter/src/batch-submitter/state-batch-submitter.ts b/packages/batch-submitter/src/batch-submitter/state-batch-submitter.ts
index dde83dd87b65a..5614ef41921b1 100644
--- a/packages/batch-submitter/src/batch-submitter/state-batch-submitter.ts
+++ b/packages/batch-submitter/src/batch-submitter/state-batch-submitter.ts
@@ -4,16 +4,16 @@ import { Contract, Signer, providers } from 'ethers'
 import { TransactionReceipt } from '@ethersproject/abstract-provider'
 import { getContractFactory } from 'old-contracts'
 import {
+  L2Block,
+  RollupInfo,
   Logger,
   Bytes32,
   remove0x,
-  toRpcHexString,
   Metrics,
 } from '@eth-optimism/core-utils'
 
 /* Internal Imports */
-import { L2Block } from '..'
-import { RollupInfo, Range, BatchSubmitter, BLOCK_OFFSET } from '.'
+import { Range, BatchSubmitter, BLOCK_OFFSET } from '.'
 
 export class StateBatchSubmitter extends BatchSubmitter {
   // TODO: Change this so that we calculate start = scc.totalElements() and end = ctc.totalElements()!
diff --git a/packages/batch-submitter/src/batch-submitter/tx-batch-submitter.ts b/packages/batch-submitter/src/batch-submitter/tx-batch-submitter.ts
index c7a188b0a03e2..9af69d48025b7 100644
--- a/packages/batch-submitter/src/batch-submitter/tx-batch-submitter.ts
+++ b/packages/batch-submitter/src/batch-submitter/tx-batch-submitter.ts
@@ -1,13 +1,18 @@
 /* External Imports */
 import { Promise as bPromise } from 'bluebird'
 import { Signer, ethers, Contract, providers } from 'ethers'
-import {
-  TransactionResponse,
-  TransactionReceipt,
-} from '@ethersproject/abstract-provider'
+import { TransactionReceipt } from '@ethersproject/abstract-provider'
 import { getContractInterface, getContractFactory } from 'old-contracts'
 import { getContractInterface as getNewContractInterface } from '@eth-optimism/contracts'
-import { Logger, Metrics, ctcCoder } from '@eth-optimism/core-utils'
+import {
+  L2Block,
+  RollupInfo,
+  BatchElement,
+  Batch,
+  QueueOrigin,
+  Logger,
+  Metrics,
+} from '@eth-optimism/core-utils'
 
 /* Internal Imports */
 import {
@@ -17,8 +22,7 @@ import {
   AppendSequencerBatchParams,
 } from '../transaction-chain-contract'
 
-import { L2Block, BatchElement, Batch, QueueOrigin } from '..'
-import { RollupInfo, Range, BatchSubmitter, BLOCK_OFFSET } from '.'
+import { Range, BatchSubmitter, BLOCK_OFFSET } from '.'
 
 export interface AutoFixBatchOptions {
   fixDoublePlayedDeposits: boolean
diff --git a/packages/batch-submitter/src/index.ts b/packages/batch-submitter/src/index.ts
index e915fe036b086..2843961c6e6e6 100644
--- a/packages/batch-submitter/src/index.ts
+++ b/packages/batch-submitter/src/index.ts
@@ -1,4 +1,2 @@
 export * from './batch-submitter'
 export * from './transaction-chain-contract'
-export * from './types'
-export * from './utils'
diff --git a/packages/batch-submitter/src/utils.ts b/packages/batch-submitter/src/utils.ts
deleted file mode 100644
index c7f4c8acc034c..0000000000000
--- a/packages/batch-submitter/src/utils.ts
+++ /dev/null
@@ -1,23 +0,0 @@
-/* External Imports */
-import { BigNumber } from 'ethers'
-
-export const getLen = (pos: { start; end }) => (pos.end - pos.start) * 2
-
-export const encodeHex = (val: any, len: number) =>
-  remove0x(BigNumber.from(val).toHexString()).padStart(len, '0')
-
-export const toVerifiedBytes = (val: string, len: number) => {
-  val = remove0x(val)
-  if (val.length !== len) {
-    throw new Error('Invalid length!')
-  }
-  return val
-}
-
-export const remove0x = (str: string): string => {
-  if (str.startsWith('0x')) {
-    return str.slice(2)
-  } else {
-    return str
-  }
-}
diff --git a/packages/batch-submitter/test/batch-submitter/batch-submitter.spec.ts b/packages/batch-submitter/test/batch-submitter/batch-submitter.spec.ts
index 9510837d0cd79..6cdce6f1c5fdf 100644
--- a/packages/batch-submitter/test/batch-submitter/batch-submitter.spec.ts
+++ b/packages/batch-submitter/test/batch-submitter/batch-submitter.spec.ts
@@ -22,19 +22,18 @@ import {
 } from '../helpers'
 import {
   CanonicalTransactionChainContract,
-  QueueOrigin,
   TransactionBatchSubmitter as RealTransactionBatchSubmitter,
   StateBatchSubmitter,
   TX_BATCH_SUBMITTER_LOG_TAG,
   STATE_BATCH_SUBMITTER_LOG_TAG,
-  Batch,
   BatchSubmitter,
 } from '../../src'
 
 import {
+  QueueOrigin,
+  Batch,
   Signature,
   TxType,
-  ctcCoder,
   remove0x,
   Logger,
   Metrics,
diff --git a/packages/batch-submitter/test/batch-submitter/mockchain-provider.ts b/packages/batch-submitter/test/batch-submitter/mockchain-provider.ts
index e50315c46446f..9c8ababce5e3e 100644
--- a/packages/batch-submitter/test/batch-submitter/mockchain-provider.ts
+++ b/packages/batch-submitter/test/batch-submitter/mockchain-provider.ts
@@ -4,9 +4,7 @@ import {
   BlockWithTransactions,
   TransactionResponse,
 } from '@ethersproject/abstract-provider'
-
-/* Internal Imports */
-import { L2Transaction, L2Block, RollupInfo } from '../../src'
+import { L2Transaction, L2Block, RollupInfo } from '@eth-optimism/core-utils'
 
 /**
  * Unformatted Transaction & Blocks. This exists because Geth currently
diff --git a/packages/batch-submitter/test/batch-submitter/transaction-batch-submitter.spec.ts b/packages/batch-submitter/test/batch-submitter/transaction-batch-submitter.spec.ts
deleted file mode 100644
index c2175e47cf738..0000000000000
--- a/packages/batch-submitter/test/batch-submitter/transaction-batch-submitter.spec.ts
+++ /dev/null
@@ -1,440 +0,0 @@
-import { expect, chai } from '../setup'
-
-/* External Imports */
-import { ethers } from 'hardhat'
-import '@nomiclabs/hardhat-ethers'
-import { Signer, ContractFactory, Contract, BigNumber } from 'ethers'
-import ganache from 'ganache-core'
-import sinon from 'sinon'
-import { Web3Provider, JsonRpcProvider } from '@ethersproject/providers'
-import { getContractInterface } from 'old-contracts'
-import { smockit, MockContract } from '@eth-optimism/smock'
-
-/* Internal Imports */
-import { MockchainProvider } from './mockchain-provider'
-import {
-  makeAddressManager,
-  setProxyTarget,
-  FORCE_INCLUSION_PERIOD_SECONDS,
-  getContractFactory,
-} from '../helpers'
-import {
-  CanonicalTransactionChainContract,
-  QueueOrigin,
-  TransactionBatchSubmitter as RealTransactionBatchSubmitter,
-  TX_BATCH_SUBMITTER_LOG_TAG,
-  Batch,
-  BatchSubmitter,
-} from '../../src'
-
-import {
-  Signature,
-  TxType,
-  ctcCoder,
-  remove0x,
-  Logger,
-  Metrics,
-} from '@eth-optimism/core-utils'
-
-const DECOMPRESSION_ADDRESS = '0x4200000000000000000000000000000000000008'
-const MAX_GAS_LIMIT = 8_000_000
-const MAX_TX_SIZE = 100_000
-const MIN_TX_SIZE = 1_000
-const MIN_GAS_PRICE_IN_GWEI = 1
-const MAX_GAS_PRICE_IN_GWEI = 70
-const GAS_RETRY_INCREMENT = 5
-const GAS_THRESHOLD_IN_GWEI = 120
-
-// Helper functions
-interface QueueElement {
-  queueRoot: string
-  timestamp: number
-  blockNumber: number
-}
-const getQueueElement = async (
-  ctcContract: Contract,
-  nextQueueIndex?: number
-): Promise<QueueElement> => {
-  if (!nextQueueIndex) {
-    nextQueueIndex = await ctcContract.getNextQueueIndex()
-  }
-  const nextQueueElement = await ctcContract.getQueueElement(nextQueueIndex)
-  return nextQueueElement
-}
-const DUMMY_SIG: Signature = {
-  r: '11'.repeat(32),
-  s: '22'.repeat(32),
-  v: 1,
-}
-// A transaction batch submitter which skips the validate batch check
-class TransactionBatchSubmitter extends RealTransactionBatchSubmitter {
-  protected async _validateBatch(batch: Batch): Promise<boolean> {
-    return true
-  }
-}
-const testMetrics = new Metrics({ prefix: 'tx_bs_test' })
-
-describe('TransactionBatchSubmitter', () => {
-  let signer: Signer
-  let sequencer: Signer
-  before(async () => {
-    ;[signer, sequencer] = await ethers.getSigners()
-  })
-
-  let AddressManager: Contract
-  let Mock__OVM_ExecutionManager: MockContract
-  let Mock__OVM_StateCommitmentChain: MockContract
-  before(async () => {
-    AddressManager = await makeAddressManager()
-    await AddressManager.setAddress(
-      'OVM_Sequencer',
-      await sequencer.getAddress()
-    )
-    await AddressManager.setAddress(
-      'OVM_DecompressionPrecompileAddress',
-      DECOMPRESSION_ADDRESS
-    )
-
-    Mock__OVM_ExecutionManager = await smockit(
-      await getContractFactory('OVM_ExecutionManager')
-    )
-
-    Mock__OVM_StateCommitmentChain = await smockit(
-      await getContractFactory('OVM_StateCommitmentChain')
-    )
-
-    await setProxyTarget(
-      AddressManager,
-      'OVM_ExecutionManager',
-      Mock__OVM_ExecutionManager
-    )
-
-    await setProxyTarget(
-      AddressManager,
-      'OVM_StateCommitmentChain',
-      Mock__OVM_StateCommitmentChain
-    )
-
-    Mock__OVM_StateCommitmentChain.smocked.canOverwrite.will.return.with(false)
-    Mock__OVM_ExecutionManager.smocked.getMaxTransactionGasLimit.will.return.with(
-      MAX_GAS_LIMIT
-    )
-  })
-
-  let Factory__OVM_CanonicalTransactionChain: ContractFactory
-  before(async () => {
-    Factory__OVM_CanonicalTransactionChain = await getContractFactory(
-      'OVM_CanonicalTransactionChain'
-    )
-  })
-
-  let OVM_CanonicalTransactionChain: CanonicalTransactionChainContract
-  let l2Provider: MockchainProvider
-  beforeEach(async () => {
-    const unwrapped_OVM_CanonicalTransactionChain = await Factory__OVM_CanonicalTransactionChain.deploy(
-      AddressManager.address,
-      FORCE_INCLUSION_PERIOD_SECONDS
-    )
-    await unwrapped_OVM_CanonicalTransactionChain.init()
-
-    await AddressManager.setAddress(
-      'OVM_CanonicalTransactionChain',
-      unwrapped_OVM_CanonicalTransactionChain.address
-    )
-
-    OVM_CanonicalTransactionChain = new CanonicalTransactionChainContract(
-      unwrapped_OVM_CanonicalTransactionChain.address,
-      getContractInterface('OVM_CanonicalTransactionChain'),
-      sequencer
-    )
-    l2Provider = new MockchainProvider(
-      OVM_CanonicalTransactionChain.address,
-      '0x' + '00'.repeat(20)
-    )
-  })
-
-  afterEach(() => {
-    sinon.restore()
-  })
-
-  describe('Submit', () => {
-    const enqueuedElements: Array<{
-      blockNumber: number
-      timestamp: number
-    }> = []
-
-    let batchSubmitter
-    beforeEach(async () => {
-      for (let i = 1; i < 15; i++) {
-        await OVM_CanonicalTransactionChain.enqueue(
-          '0x' + '01'.repeat(20),
-          50_000,
-          '0x' + i.toString().repeat(64),
-          {
-            gasLimit: 1_000_000,
-          }
-        )
-      }
-      batchSubmitter = new TransactionBatchSubmitter(
-        sequencer,
-        l2Provider as any,
-        MIN_TX_SIZE,
-        MAX_TX_SIZE,
-        10,
-        0,
-        1,
-        100000,
-        AddressManager.address,
-        1,
-        MIN_GAS_PRICE_IN_GWEI,
-        MAX_GAS_PRICE_IN_GWEI,
-        GAS_RETRY_INCREMENT,
-        GAS_THRESHOLD_IN_GWEI,
-        new Logger({ name: TX_BATCH_SUBMITTER_LOG_TAG }),
-        testMetrics,
-        false
-      )
-    })
-
-    it('should submit a sequencer batch correctly', async () => {
-      l2Provider.setNumBlocksToReturn(5)
-      const nextQueueElement = await getQueueElement(
-        OVM_CanonicalTransactionChain
-      )
-      const data = ctcCoder.eip155TxData.encode({
-        sig: DUMMY_SIG,
-        gasLimit: 0,
-        gasPrice: 0,
-        nonce: 0,
-        target: '0x0000000000000000000000000000000000000000',
-        data: '0x',
-        type: TxType.EIP155,
-      })
-      l2Provider.setL2BlockData(
-        {
-          data,
-          l1BlockNumber: nextQueueElement.blockNumber - 1,
-          txType: TxType.EIP155,
-          queueOrigin: QueueOrigin.Sequencer,
-          l1TxOrigin: null,
-        } as any,
-        nextQueueElement.timestamp - 1
-      )
-      let receipt = await batchSubmitter.submitNextBatch()
-      let logData = remove0x(receipt.logs[1].data)
-      expect(parseInt(logData.slice(64 * 0, 64 * 1), 16)).to.equal(0) // _startingQueueIndex
-      expect(parseInt(logData.slice(64 * 1, 64 * 2), 16)).to.equal(0) // _numQueueElements
-      expect(parseInt(logData.slice(64 * 2, 64 * 3), 16)).to.equal(6) // _totalElements
-      receipt = await batchSubmitter.submitNextBatch()
-      logData = remove0x(receipt.logs[1].data)
-      expect(parseInt(logData.slice(64 * 0, 64 * 1), 16)).to.equal(0) // _startingQueueIndex
-      expect(parseInt(logData.slice(64 * 1, 64 * 2), 16)).to.equal(0) // _numQueueElements
-      expect(parseInt(logData.slice(64 * 2, 64 * 3), 16)).to.equal(11) // _totalElements
-    })
-
-    it('should submit a queue batch correctly', async () => {
-      l2Provider.setNumBlocksToReturn(5)
-      l2Provider.setL2BlockData({
-        queueOrigin: QueueOrigin.L1ToL2,
-      } as any)
-      let receipt = await batchSubmitter.submitNextBatch()
-      let logData = remove0x(receipt.logs[1].data)
-      expect(parseInt(logData.slice(64 * 0, 64 * 1), 16)).to.equal(0) // _startingQueueIndex
-      expect(parseInt(logData.slice(64 * 1, 64 * 2), 16)).to.equal(6) // _numQueueElements
-      expect(parseInt(logData.slice(64 * 2, 64 * 3), 16)).to.equal(6) // _totalElements
-      receipt = await batchSubmitter.submitNextBatch()
-      logData = remove0x(receipt.logs[1].data)
-      expect(parseInt(logData.slice(64 * 0, 64 * 1), 16)).to.equal(6) // _startingQueueIndex
-      expect(parseInt(logData.slice(64 * 1, 64 * 2), 16)).to.equal(5) // _numQueueElements
-      expect(parseInt(logData.slice(64 * 2, 64 * 3), 16)).to.equal(11) // _totalElements
-    })
-
-    it('should submit a batch with both queue and sequencer chain elements', async () => {
-      l2Provider.setNumBlocksToReturn(10) // For this batch we'll return 10 elements!
-      l2Provider.setL2BlockData({
-        queueOrigin: QueueOrigin.L1ToL2,
-      } as any)
-      // Turn blocks 3-5 into sequencer txs
-      const nextQueueElement = await getQueueElement(
-        OVM_CanonicalTransactionChain,
-        2
-      )
-      const data = ctcCoder.ethSignTxData.encode({
-        sig: DUMMY_SIG,
-        gasLimit: 0,
-        gasPrice: 0,
-        nonce: 0,
-        target: '0x0000000000000000000000000000000000000000',
-        data: '0x',
-        type: TxType.EthSign,
-      })
-      l2Provider.setL2BlockData(
-        {
-          data,
-          l1BlockNumber: nextQueueElement.blockNumber - 1,
-          txType: TxType.EthSign,
-          queueOrigin: QueueOrigin.Sequencer,
-          l1TxOrigin: null,
-        } as any,
-        nextQueueElement.timestamp - 1,
-        '', // blank state root
-        3,
-        6
-      )
-      const receipt = await batchSubmitter.submitNextBatch()
-      const logData = remove0x(receipt.logs[1].data)
-      expect(parseInt(logData.slice(64 * 0, 64 * 1), 16)).to.equal(0) // _startingQueueIndex
-      expect(parseInt(logData.slice(64 * 1, 64 * 2), 16)).to.equal(8) // _numQueueElements
-      expect(parseInt(logData.slice(64 * 2, 64 * 3), 16)).to.equal(11) // _totalElements
-    })
-
-    it('should submit a small batch only after the timeout', async () => {
-      l2Provider.setNumBlocksToReturn(2)
-      l2Provider.setL2BlockData({
-        queueOrigin: QueueOrigin.L1ToL2,
-      } as any)
-      const createBatchSubmitter = (
-        timeout: number
-      ): TransactionBatchSubmitter =>
-        new TransactionBatchSubmitter(
-          sequencer,
-          l2Provider as any,
-          MIN_TX_SIZE,
-          MAX_TX_SIZE,
-          10,
-          timeout,
-          1,
-          100000,
-          AddressManager.address,
-          1,
-          MIN_GAS_PRICE_IN_GWEI,
-          MAX_GAS_PRICE_IN_GWEI,
-          GAS_RETRY_INCREMENT,
-          GAS_THRESHOLD_IN_GWEI,
-          new Logger({ name: TX_BATCH_SUBMITTER_LOG_TAG }),
-          testMetrics,
-          false
-        )
-
-      // Create a batch submitter with a long timeout & make sure it doesn't submit the batches one after another
-      const longTimeout = 10_000
-      batchSubmitter = createBatchSubmitter(longTimeout)
-      let receipt = await batchSubmitter.submitNextBatch()
-      expect(receipt).to.not.be.undefined
-      receipt = await batchSubmitter.submitNextBatch()
-      // The receipt should be undefined because that means it didn't submit
-      expect(receipt).to.be.undefined
-
-      // This time create a batch submitter with a short timeout & it should submit batches after the timeout is reached
-      const shortTimeout = 5
-      batchSubmitter = createBatchSubmitter(shortTimeout)
-      receipt = await batchSubmitter.submitNextBatch()
-      expect(receipt).to.not.be.undefined
-      // Sleep for the short timeout
-      await new Promise((r) => setTimeout(r, shortTimeout))
-      receipt = await batchSubmitter.submitNextBatch()
-      // The receipt should NOT be undefined because that means it successfully submitted!
-      expect(receipt).to.not.be.undefined
-    })
-
-    it('should not submit if gas price is over threshold', async () => {
-      l2Provider.setNumBlocksToReturn(2)
-      l2Provider.setL2BlockData({
-        queueOrigin: QueueOrigin.L1ToL2,
-      } as any)
-
-      const highGasPriceWei = BigNumber.from(200).mul(1_000_000_000)
-
-      sinon
-        .stub(sequencer, 'getGasPrice')
-        .callsFake(async () => highGasPriceWei)
-
-      const receipt = await batchSubmitter.submitNextBatch()
-      expect(sequencer.getGasPrice).to.have.been.calledOnce
-      expect(receipt).to.be.undefined
-    })
-
-    it('should submit if gas price is not over threshold', async () => {
-      l2Provider.setNumBlocksToReturn(2)
-      l2Provider.setL2BlockData({
-        queueOrigin: QueueOrigin.L1ToL2,
-      } as any)
-
-      const lowGasPriceWei = BigNumber.from(2).mul(1_000_000_000)
-
-      sinon.stub(sequencer, 'getGasPrice').callsFake(async () => lowGasPriceWei)
-
-      const receipt = await batchSubmitter.submitNextBatch()
-      expect(sequencer.getGasPrice).to.have.been.calledOnce
-      expect(receipt).to.not.be.undefined
-    })
-  })
-})
-
-describe('TransactionBatchSubmitter to Ganache', () => {
-  let signer
-  const server = ganache.server({
-    default_balance_ether: 420,
-    blockTime: 2_000,
-  })
-  const provider = new Web3Provider(ganache.provider())
-
-  before(async () => {
-    await server.listen(3001)
-    signer = await provider.getSigner()
-  })
-
-  after(async () => {
-    await server.close()
-  })
-
-  // Unit test for getReceiptWithResubmission function,
-  // tests for increasing gas price on resubmission
-  it('should resubmit a transaction if it is not confirmed', async () => {
-    const gasPrices = []
-    const numConfirmations = 2
-    const sendTxFunc = async (gasPrice) => {
-      // push the retried gasPrice
-      gasPrices.push(gasPrice)
-
-      const tx = signer.sendTransaction({
-        to: DECOMPRESSION_ADDRESS,
-        value: 88,
-        nonce: 0,
-        gasPrice,
-      })
-
-      const response = await tx
-
-      return signer.provider.waitForTransaction(response.hash, numConfirmations)
-    }
-
-    const resubmissionConfig = {
-      numConfirmations,
-      resubmissionTimeout: 1_000, // retry every second
-      minGasPriceInGwei: 0,
-      maxGasPriceInGwei: 100,
-      gasRetryIncrement: 5,
-    }
-
-    BatchSubmitter.getReceiptWithResubmission(
-      sendTxFunc,
-      resubmissionConfig,
-      new Logger({ name: TX_BATCH_SUBMITTER_LOG_TAG })
-    )
-
-    // Wait 1.5s for at least 1 retry
-    await new Promise((r) => setTimeout(r, 1500))
-
-    // Iterate through gasPrices to ensure each entry increases from
-    // the last
-    const isIncreasing = gasPrices.reduce(
-      (isInc, gasPrice, i, gP) =>
-        (isInc && gasPrice > gP[i - 1]) || Number.NEGATIVE_INFINITY,
-      true
-    )
-
-    expect(gasPrices).to.have.lengthOf.above(1) // retried at least once
-    expect(isIncreasing).to.be.true
-  })
-})
diff --git a/packages/batch-submitter/test/helpers/index.ts b/packages/batch-submitter/test/helpers/index.ts
index eb5f522ebd913..0473fe33e25ef 100644
--- a/packages/batch-submitter/test/helpers/index.ts
+++ b/packages/batch-submitter/test/helpers/index.ts
@@ -1,4 +1,3 @@
 export * from './dummy'
 export * from './constants'
 export * from './resolver'
-export * from './utils'
diff --git a/packages/batch-submitter/test/helpers/utils/buffer-utils.ts b/packages/batch-submitter/test/helpers/utils/buffer-utils.ts
deleted file mode 100644
index 4b2f296bbe926..0000000000000
--- a/packages/batch-submitter/test/helpers/utils/buffer-utils.ts
+++ /dev/null
@@ -1,44 +0,0 @@
-/* External Imports */
-import { BigNumber } from 'ethers'
-
-/**
- * Converts a string or buffer to a '0x'-prefixed hex string.
- * @param buf String or buffer to convert.
- * @returns '0x'-prefixed string.
- */
-export const toHexString = (buf: Buffer | string): string => {
-  return '0x' + fromHexString(buf).toString('hex')
-}
-
-/**
- * Converts a '0x'-prefixed string to a buffer.
- * @param str '0x'-prefixed string to convert.
- * @returns Hex buffer.
- */
-export const fromHexString = (str: string | Buffer): Buffer => {
-  if (typeof str === 'string' && str.startsWith('0x')) {
-    return Buffer.from(str.slice(2), 'hex')
-  }
-
-  return Buffer.from(str)
-}
-
-export const toHexString32 = (
-  input: Buffer | string | number,
-  padRight = false
-): string => {
-  if (typeof input === 'number') {
-    input = BigNumber.from(input).toHexString()
-  }
-
-  input = toHexString(input).slice(2)
-  return '0x' + (padRight ? input.padEnd(64, '0') : input.padStart(64, '0'))
-}
-
-export const getHexSlice = (
-  input: Buffer | string,
-  start: number,
-  length: number
-): string => {
-  return toHexString(fromHexString(input).slice(start, start + length))
-}
diff --git a/packages/batch-submitter/test/helpers/utils/byte-utils.ts b/packages/batch-submitter/test/helpers/utils/byte-utils.ts
deleted file mode 100644
index 92d47182dfe7e..0000000000000
--- a/packages/batch-submitter/test/helpers/utils/byte-utils.ts
+++ /dev/null
@@ -1,31 +0,0 @@
-/**
- * Generates a hex string of repeated bytes.
- * @param byte Byte to repeat.
- * @param len Number of times to repeat the byte.
- * @return '0x'-prefixed hex string filled with the provided byte.
- */
-export const makeHexString = (byte: string, len: number): string => {
-  return '0x' + byte.repeat(len)
-}
-
-/**
- * Genereates an address with a repeated byte.
- * @param byte Byte to repeat in the address.
- * @return Address filled with the repeated byte.
- */
-export const makeAddress = (byte: string): string => {
-  return makeHexString(byte, 20)
-}
-
-/**
- * Removes '0x' from a hex string.
- * @param str Hex string to remove '0x' from.
- * @returns String without the '0x' prefix.
- */
-export const remove0x = (str: string): string => {
-  if (str.startsWith('0x')) {
-    return str.slice(2)
-  } else {
-    return str
-  }
-}
diff --git a/packages/batch-submitter/test/helpers/utils/eth-time.ts b/packages/batch-submitter/test/helpers/utils/eth-time.ts
deleted file mode 100644
index b815d00952dd3..0000000000000
--- a/packages/batch-submitter/test/helpers/utils/eth-time.ts
+++ /dev/null
@@ -1,30 +0,0 @@
-export const getEthTime = async (provider: any): Promise<number> => {
-  return (await provider.getBlock('latest')).timestamp
-}
-
-export const setEthTime = async (
-  provider: any,
-  time: number
-): Promise<void> => {
-  await provider.send('evm_setNextBlockTimestamp', [time])
-}
-
-export const increaseEthTime = async (
-  provider: any,
-  amount: number
-): Promise<void> => {
-  await setEthTime(provider, (await getEthTime(provider)) + amount)
-  await provider.send('evm_mine', [])
-}
-
-export const getBlockTime = async (
-  provider: any,
-  block: number
-): Promise<number> => {
-  await provider.send('evm_mine', [])
-  return (await provider.getBlock(block)).timestamp
-}
-
-export const getNextBlockNumber = async (provider: any): Promise<number> => {
-  return (await provider.getBlock('latest')).number + 1
-}
diff --git a/packages/batch-submitter/test/helpers/utils/index.ts b/packages/batch-submitter/test/helpers/utils/index.ts
deleted file mode 100644
index 4e2410fdcca25..0000000000000
--- a/packages/batch-submitter/test/helpers/utils/index.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-export * from './buffer-utils'
-export * from './byte-utils'
-export * from './eth-time'
diff --git a/packages/batch-submitter/src/types.ts b/packages/core-utils/src/batches.ts
similarity index 80%
rename from packages/batch-submitter/src/types.ts
rename to packages/core-utils/src/batches.ts
index 1aea043612751..27f4a655220d0 100644
--- a/packages/batch-submitter/src/types.ts
+++ b/packages/core-utils/src/batches.ts
@@ -4,6 +4,19 @@ import {
   TransactionResponse,
 } from '@ethersproject/abstract-provider'
 
+export interface RollupInfo {
+  mode: 'sequencer' | 'verifier'
+  syncing: boolean
+  ethContext: {
+    blockNumber: number
+    timestamp: number
+  }
+  rollupContext: {
+    index: number
+    queueIndex: number
+  }
+}
+
 export enum QueueOrigin {
   Sequencer = 'sequencer',
   L1ToL2 = 'l1',
diff --git a/packages/core-utils/src/index.ts b/packages/core-utils/src/index.ts
index e6b44b8f51473..ad8012200d96c 100644
--- a/packages/core-utils/src/index.ts
+++ b/packages/core-utils/src/index.ts
@@ -4,3 +4,4 @@ export * from './watcher'
 export * from './base-service'
 export * from './l2context'
 export * from './events'
+export * from './batches'