Layer 2 State Channels

Layer 2 State Channels are off-chain communication protocols that allow participants to transact repeatedly without committing every interaction to the main blockchain. Users lock a portion of their assets into a multi-signature smart contract on the main chain, which serves as the collateral for the channel.

Once opened, participants can exchange signed messages representing state updates instantly and with zero gas fees. Only the final net result of these transactions is submitted to the main blockchain when the channel is closed.

This mechanism significantly reduces congestion on the base layer while providing near-instant finality for the participants. It is particularly useful for high-frequency trading pairs and recurring payment streams.

However, it requires both parties to be online or to utilize a watchtower service to monitor for malicious closure attempts.