LayerZero v2 DVNs

LayerZero v2 made the security model application-configurable. Instead of a fixed oracle and relayer pair, every application picks a set of Decentralized Verifier Networks and an executor.

A message is considered committed only when a quorum of the chosen DVNs signs off on the block header the payload was emitted in. Applications can use a single DVN for cheap non-critical messages, or stack multiple independent DVNs for high-value flows.

Executors deliver the message and pay the destination gas - this role is open and permissionless. The whole architecture is an attempt to give back control of the trust assumptions to the application rather than baking them into the protocol.

It is by a wide margin the most-deployed message passing layer in production today.