Base Native Bridge (base-bridge)

Official Base L1StandardBridge for depositing ETH and ERC-20 tokens from Ethereum to Base. OP Stack architecture with 7-day withdrawal finality.

Notes

L1 to L2 only via this contract. For L2 to L1 withdrawals, use the L2StandardBridge on Base (takes 7 days)
OP Stack architecture — same bridge pattern as Optimism, Mode, Zora
depositETH / depositERC20 are for an externally owned account only: called from a contract, a Pot included, they revert with “StandardBridge: function can only be called from an EOA”. A Sauce program uses depositETHTo / depositERC20To and names the recipient, the user’s wallet unless they chose otherwise
L1 to L2 deposits finalize in ~2-5 minutes (after L1 inclusion + sequencer processing)
L2 to L1 withdrawals require 7-day challenge period (optimistic rollup security)
_l2Token must be the official bridged token representation on Base — incorrect L2 token address will cause deposit to fail
Canonical bridge, secured by the Base (OP Stack) rollup itself
L2StandardBridge is at a predefined address: 0x4200000000000000000000000000000000000010

On Ethereum, BaseBridge is a namespace: its contracts need no import.

function main() {
  // Ethereum's l1StandardBridge, `0x3154Cf16ccdb4C6d922629664174b904d80F2C35`.
  require(BaseBridge.L1StandardBridge != 0);
}

Chain	Contract	Address	In a program
Ethereum	l1StandardBridge	`0x3154Cf16ccdb4C6d922629664174b904d80F2C35`	`BaseBridge.L1StandardBridge`
Base	l2StandardBridge	`0x4200000000000000000000000000000000000010`	`BaseBridge.L2StandardBridge`

import BaseL1StandardBridgeABI from "./protocols/base-bridge/BaseL1StandardBridgeABI.json"; Speaks for: l1StandardBridge.

depositETH(uint32 _minGasLimit, bytes _extraData) payable
depositERC20(address _l1Token, address _l2Token, uint256 _amount, uint32 _minGasLimit, bytes _extraData)
depositETHTo(address _to, uint32 _minGasLimit, bytes _extraData) payable
depositERC20To(address _l1Token, address _l2Token, address _to, uint256 _amount, uint32 _minGasLimit, bytes _extraData)