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getOutputForL2Block ​

Calls to the L2OutputOracle contract on L1 to get the output for a given L2 block.

ts
import { publicL1Actions } from 'op-viem'
import { baseAddresses } from 'op-viem/chains'
import { createPublicClient } from 'viem'

const publicClient = createPublicClient({
  account,
  chain: mainnet,
  transport: http(),
}).extend(publicL1Actions)

await getOutputForL2Block(publicClient, {
  blockNumber: 2725977n,
  l2OutputOracle: baseAddresses.l2OutputOracle,
})

// more simply
await getOutputForL2Block(publicClient, {
  blockNumber: 2725977n,
  ...baseAddresses,
})

Return Value ​

Returns GetOutputForL2BlockReturnType.

ts
export type Proposal = {
  outputRoot: Hex
  timestamp: bigint
  l2BlockNumber: bigint
}

export type GetOutputForL2BlockReturnType = {
  proposal: Proposal
  outputIndex: bigint
}

Parameters ​

blockNumber ​

  • Type: bigint

The block number of the L2 block for which to get the output.

l2OutputOracle ​

The address of the L2OutputOracle contract where the getOutputForL2Block call will be made.