Gas Optimization for Relays

Gas Optimization for Relays involves designing smart contract logic to minimize the transaction costs associated with submitting block headers or proofs to a destination chain. Because submitting proofs on-chain consumes gas, relayers may batch multiple headers or proofs into a single transaction to save costs.

Developers use techniques like signature aggregation, such as BLS signatures, to compress the data submitted to the destination chain. Lowering these costs is essential for maintaining the economic viability of the bridge.

If gas costs are too high, the bridge becomes prohibitively expensive for small transactions, limiting liquidity. Efficient gas usage directly improves the scalability of cross-chain interactions.