ButterNetwork

Butter Network is cross-chain infrastructure for multi-chain assets and messaging, connecting Ethereum and several EVM chains with Bitcoin layer-two networks and heterogeneous chains such as Near. The core difficulty of bridging is how the destination chain can trust source-chain state; most designs rely on an external validator set. Butter Network runs light clients of connected chains on a relay chain and uses zero-knowledge proofs to compress source-chain block headers into proofs verifiable on the destination chain, with verification logic built on the Groth16 proving system, shifting trust from external signers to cryptographic proof.

It belongs to the interoperability and cross-chain infrastructure track. Verifiable progress is reflected in the expansion of connected chains and the deployment of light-client verification modules, covering Bitcoin layer-two and EVM networks such as BEVM, Merlin, Base and Blast, with developers able to make cross-chain asset and message calls through a unified interface.