Hey everyone,
Cross-network interaction is essential for maintaining liquidity and seamless data flow between L1 and multiple L2 networks. The proposed setup ensures a trustless bridge mechanism by posting cryptographic state digests between layers.
For L2-to-L1 interactions, the L2 state digest is submitted to a primary contract on L1. Conversely, for L1-to-L2 transactions, a dedicated contract on L2 updates the L1 state digest. This allows smart contracts to verify bridge transactions using Merkle Tree proofs, ensuring transaction validity without requiring trust in intermediaries.
L2 miners play a crucial role by submitting L1 state updates to the bridge smart contract, enabling cross-chain communication. This mechanism can also facilitate L2-to-L2 bridging, where miners post state digests of one L2 to another via L1, allowing for verifiable cross-network transactions.
A key aspect of the system is token ID correspondence, which must be established upon token registration in the bridge smart contract. This ensures token consistency across chains and prevents changes that could disrupt interoperability.
This model presents a robust approach to secure, decentralized bridging - but how can we further optimize miner incentives and transaction efficiency?