Flare Bridge

Try it out!

Coin on Sepolia: 0x5187763e09a672eda81F27e622129Ac28393ca53

Coin on Coston: 0x8c49e01E86d9ef98eA963Be48B1E41297E06F817

Relay on Coston: 0x9b4e6a477EC865551ca4f5558420C908482F6073

Relay on Sepolia: 0x2cD3CbcC13e5b165b6b43708788B4477778bC171

Gatway on Coston: 0x8b1274d063593F0973afF1710EA4490BE67AE9f2

Gateway on Sepolia: 0x0c2eFE1D385151870B3fFb9901B7a0FB1C5a1314

Relayer
- Rewritten in Node.js
- Previous relayer was busy waiting / querying every individual block
- New relayer simply adds listeners on the relevant contract events
- Generates proofs on both Sepolia and Coston for events
- Submits proofs along with the relevant calldata to the other network
Gateway Contract
- Supports thorough access controll
  - Owners set who are the allowed relayers
- Allows the user to send tokens
  - Burns the tokens
  - Calls the relay contract
- Verifies proofs before minting tokens
  - Verifies the Merkle root of the proof using Flare's contracts
  - Verifies that there is a burn event
  - Verifies that the user that submitted the request is the same as the user who burned
  - Verifies the user is redeeming tokens in the same contract pair as they burned
  - Verifies the user is redeeming exactly as many tokens as they burned
  - Verifies the user has not previously tried to attest this burn event
  - Verifies that a valid relayer is calling with the burn
Relay Contract
- Generic on-chain message sending contract
- Application agnostic
- Supports arbitrary calldata message calls
- Not responsible for verifying proofs

Coston to Sepolia:

cd gateway-contracts

npx hardhat run scripts/deployCoin.js --network sepolia

npx hardhat run scripts/deployCoin.js --network coston


etc...

pm2 report

pm2 start "node src/server.js sepolia" -n sepolia

pm2 start "node src/server.js coston" -n coston

pm2 start