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getTimeToProve

Gets time until the L2 withdrawal transaction is ready to be proved. Used for the Withdrawal flow.

Internally calls getTimeToNextL2Output.

Usage

import { account, publicClientL1, publicClientL2 } from './config'
 
const receipt = await publicClientL2.getTransactionReceipt({
  hash: '0x7b5cedccfaf9abe6ce3d07982f57bcb9176313b019ff0fc602a0b70342fe3147'
})
 
const { 
  interval, 
  seconds, 
  timestamp
} = await publicClientL1.getTimeToProve({ 
  receipt, 
  targetChain: publicClientL2.chain, 
})

Returns

{ interval: number, seconds: number, timestamp: number }

  • interval between L2 outputs – the max time to wait for transaction to be proved.
  • Estimated seconds until the transaction can be proved.
  • Estimated timestamp of when the transaction can be proved.

Parameters

receipt

  • Type: TransactionReceipt

The transaction receipt.

const time = await publicClientL1.getTimeToProve({ 
  receipt, 
  targetChain: optimism, 
})

targetChain

The L2 chain.

const time = await publicClientL1.getTimeToProve({
  l2BlockNumber,
  targetChain: optimism, 
})

intervalBuffer (optional)

  • Type: number
  • Default: 1.1

The buffer to account for discrepencies between non-deterministic time intervals.

const time = await publicClientL1.getTimeToProve({ 
  intervalBuffer: 1.2, 
  l2BlockNumber,
  targetChain: optimism, 
})

l2OutputOracleAddress (optional)

  • Type: Address
  • Default: targetChain.contracts.l2OutputOracle[chainId].address

The address of the L2 Output Oracle contract. Defaults to the L2 Output Oracle contract specified on the targetChain.

If a l2OutputOracleAddress is provided, the targetChain parameter becomes optional.

const time = await publicClientL1.getTimeToProve({
  l2BlockNumber,
  l2OutputOracleAddress: '0xbEb5Fc579115071764c7423A4f12eDde41f106Ed'
})