@across/contracts

This package contains the contracts for the Across Protocol. They have been audited by Open Zeppelin and tested thoroughly in automated tests and on mainnet.

Installing and building

To install:

yarn

To build:

yarn build

Running tests

yarn test

Deploying

This repo has a prepared set of deployment scripts. Since across is a multi-chain protocol, the deployment process will involve multiple steps and some configuration transactions afterwards.

To do the basic mainnet deployment of across, you can run:

CUSTOM_NODE_URL=YOUR_NODE_URL_HERE MNEMONIC=YOUR_MNEMONIC_HERE yarn hardhat deploy --tags mainnet --network mainnet

This should print out a set of addresses. You should replace the addresses in networks/1.json with the addresses printed.

Now you should be able to deploy to Arbitrum, Optimism, or Boba by running the same command with a new node url and new network name:

CUSTOM_NODE_URL=ARBITRUM_NODE_HERE MNEMONIC=YOUR_MNEMONIC_HERE yarn hardhat deploy --tags arbitrum --network arbitrum

Once this is done, you will need to call the following methods to get things up and running:

• On the Arbitrum_Messenger, Optimism_Messenger, and Boba_Messenger, call transferOwnership to pass ownership to the BridgeAdmin address.
• On the BridgeAdmin, call setDepositContract with the appropriate deposit box, chain id, and messenger for the L2 that you want to enable.
• On the BridgeAdmin, call whitelistToken to add the WETHBridgePool (or others that you deploy for other tokens) and map it to a particular L2 WETH. This will also allow your L2 DepositBox to begin taking deposits in WETH.