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estimateProveWithdrawalGas

Estimates gas required to prove a withdrawal that occurred on an L2.

Usage

example.ts
import { optimism } from 'viem/chains'
import { account, publicClientL1 } from './config'
 
const gas = await publicClientL1.estimateProveWithdrawalGas({ 
  account: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e', 
  l2OutputIndex: 4529n, 
  outputRootProof: { ... }, 
  targetChain: optimism, 
  withdrawalProof: [ ... ], 
  withdrawal: { ... }, 
})

Returns

bigint

The estimated gas.

Parameters

account

  • Type: Account | Address

The Account to send the transaction from.

Accepts a JSON-RPC Account or Local Account (Private Key, etc).

const hash = await client.estimateProveWithdrawalGas({
  account: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266', 
  l2OutputIndex: 4529n,
  outputRootProof: { /* ... */ },
  withdrawalProof: [ /* ... */ ],
  withdrawal: { /* ... */ },
  targetChain: optimism,
})

chain (optional)

  • Type: Chain
  • Default: client.chain

The L1 chain. If there is a mismatch between the wallet's current chain & this chain, an error will be thrown.

import { mainnet } from 'viem/chains'
 
const hash = await client.estimateProveWithdrawalGas({
  account: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
  chain: mainnet, 
  l2OutputIndex: 4529n,
  outputRootProof: { /* ... */ },
  withdrawalProof: [ /* ... */ ],
  withdrawal: { /* ... */ },
  targetChain: optimism,
})

gas (optional)

  • Type: bigint

Gas limit for transaction execution on the L1.

const hash = await client.estimateProveWithdrawalGas({
  account: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
  l2OutputIndex: 4529n,
  gas: 420_000n,  
  outputRootProof: { /* ... */ },
  withdrawalProof: [ /* ... */ ],
  withdrawal: { /* ... */ },
  targetChain: optimism,
})

l2OutputIndex

  • Type: bigint

The index of the L2 output. Typically derived from the buildProveWithdrawal Action.

const hash = await client.estimateProveWithdrawalGas({
  account: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
  l2OutputIndex: 4529n, 
  gas: 420_000n, 
  outputRootProof: { /* ... */ },
  withdrawalProof: [ /* ... */ ],
  withdrawal: { /* ... */ },
  targetChain: optimism,
})

maxFeePerGas (optional)

  • Type: bigint

Total fee per gas (in wei), inclusive of maxPriorityFeePerGas.

const hash = await client.estimateProveWithdrawalGas({
  account: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
  l2OutputIndex: 4529n,
  maxFeePerGas: parseGwei('20'),  
  outputRootProof: { /* ... */ },
  withdrawalProof: [ /* ... */ ],
  withdrawal: { /* ... */ },
  targetChain: optimism,
})

maxPriorityFeePerGas (optional)

  • Type: bigint

Max priority fee per gas (in wei). Only applies to EIP-1559 Transactions

const hash = await client.estimateProveWithdrawalGas({
  account: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
  l2OutputIndex: 4529n,
  maxFeePerGas: parseGwei('20'), 
  maxPriorityFeePerGas: parseGwei('2'),  
  outputRootProof: { /* ... */ },
  withdrawalProof: [ /* ... */ ],
  withdrawal: { /* ... */ },
  targetChain: optimism,
})

nonce (optional)

  • Type: number

Unique number identifying this transaction.

const hash = await client.estimateProveWithdrawalGas({
  account: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
  l2OutputIndex: 4529n,
  outputRootProof: { /* ... */ },
  withdrawalProof: [ /* ... */ ],
  withdrawal: { /* ... */ },
  nonce: 69, 
  targetChain: optimism,
})

outputRootProof (optional)

  • Type: bigint

The proof of the L2 output. Typically derived from the buildProveWithdrawal Action.

const hash = await client.estimateProveWithdrawalGas({
  account: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
  l2OutputIndex: 4529n,
  gas: 420_000n, 
  outputRootProof: { /* ... */ }, 
  withdrawalProof: [ /* ... */ ],
  withdrawal: { /* ... */ },
  targetChain: optimism,
})

portalAddress (optional)

  • Type: Address
  • Default: targetChain.contracts.portal[chainId].address

The address of the Optimism Portal contract. Defaults to the Optimism Portal contract specified on the targetChain.

If a portalAddress is provided, the targetChain parameter becomes optional.

const hash = await client.estimateProveWithdrawalGas({
  account: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
  l2OutputIndex: 4529n,
  outputRootProof: { /* ... */ },
  portalAddress: '0xbEb5Fc579115071764c7423A4f12eDde41f106Ed'
  targetChain: optimism,
  withdrawalProof: [ /* ... */ ],
  withdrawal: { /* ... */ },
})

targetChain

The L2 chain to execute the transaction on.

import { mainnet } from 'viem/chains'
 
const hash = await client.estimateProveWithdrawalGas({
  account: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
  l2OutputIndex: 4529n,
  outputRootProof: { /* ... */ },
  withdrawalProof: [ /* ... */ ],
  withdrawal: { /* ... */ },
  targetChain: optimism, 
})

withdrawalProof

  • Type: bigint

The proof of the L2 withdrawal. Typically derived from the buildProveWithdrawal Action.

const hash = await client.estimateProveWithdrawalGas({
  account: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
  l2OutputIndex: 4529n,
  gas: 420_000n, 
  outputRootProof: { /* ... */ },
  withdrawalProof: [ /* ... */ ], 
  withdrawal: { /* ... */ },
  targetChain: optimism,
})

withdrawal

  • Type: bigint

The withdrawal. Typically derived from the buildProveWithdrawal Action.

const hash = await client.estimateProveWithdrawalGas({
  account: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
  l2OutputIndex: 4529n,
  gas: 420_000n, 
  outputRootProof: { /* ... */ },
  withdrawalProof: [ /* ... */ ],
  withdrawal: { /* ... */ }, 
  targetChain: optimism,
})