Penguin Network

This protocol brings relayers into the ecosystem for cross-chain trustless messaging, by letting them deposit the bond at Ethereum layer 1. Relayers will take the risk of slash, but they can earn commission fees by being responsible for cross-chain communication. Relayers can also earn yield from AAVE protocol by supplying assets with a bond that lock on layer1. Slash is executed using the blockhash of each layer2 stored in Ethereum layer 1, so relayers can take on arbitrary messaging between any layer2s. Currently, arbitrary inter-chain communication is performed primarily by sequencers in the chain itself, but our protocol brings more relayers for this tasks and leads more decentralized, faster and cheaper communication, since this protocol does not perform verification as long as there is no problem. In the future, we can also use native L1ToL2Communication methods implemented on each layer2s to bringe about relayers that perform cross-chain communication over collateral on arbitrary assets locked on any layer2s.

We deployed this protocol on Polygon Mumbai, Scroll Testnet, Polygon zkEVM, Linea, and Taiko. Once slashing happened, we use native bridge methods that is implemented on each L2s to send slash data and execute compensation for users. Also, we used AAVE's supply methods to give relayers to deposit their bond into AAVE pool and earn yields.