A hook for L1 -> L2 transfers on Scroll powered by the native bridge.

It might be helpful to have a high-level knowledge of the Scroll bridging.

• The Scroll Messenger — Docs
• Transaction Fees on Scroll — Docs
• L1ScrollMessenger.sol — GitHub
• L2ScrollMessenger.sol — GitHub

1. Install the dependencies

npm install

2. Build the contracts

npm run build

1. Deploy the ISM

forge script script/Deploy.s.sol:DeployIsm --rpc-url scroll_sepolia --legacy --broadcast -vvvv

2. Deploy the hook

Note: you need to set the ISM address in the script

forge script script/Deploy.s.sol:DeployHook --rpc-url sepolia --broadcast -vvvv

3. Set the authorized hook

Note: you need to set both the ISM address and the hook address in the script

forge script script/Deploy.s.sol:SetAuthorizedHook --rpc-url scroll_sepolia --legacy --broadcast -vvvv

• ScrollHook
  • Chain: Sepolia (11155111)
  • Address: 0x5248130913109c347695f3beA0682eeE42c2436F
• ScrollIsm
  • Chain: Scroll Sepolia (534351)
  • Address: 0x65B7249f2D2b8EE2fCFD19f2ccE2D4522031BFb9

The bridging script:

forge script script/Bridge.s.sol --rpc-url sepolia --broadcast -vvvv

Amount: 0.00042069 ETH

Message ID: 3421af3988efb00eaa3efcb4322fa6c272a28b651d680bdb02752f37ecead7a1

L1 Transaction: 0xa8d1e2ee9373d614db46b79c1ed9bc82c886d16ed0f4e90332924c4aa52b2d96

L2 Transaction: 0x99e3b4a59b7434ee85561dd5908ee089def64b5f612f7e1cd49480addf6c347c