Polyhedra’s zkBridge to Enhance Cross-Chain Security with ZK Proofs via Flare Integration

Polyhedra’s zkBridge DVN is set to integrate with Flare to increase cross-chain security with ZK proofs. The integration will enable Flare developers to create secure and efficient cross-chain applications using LayerZero under the cryptographic guarantees of ZK proofs.

Supporting more than 30 layer-1 and layer-2 networks, zkBridge is a trustless, efficient, and secure cross-chain interoperability protocol and one of LayerZero’s Decentralized Verifier Networks (DVNs). The protocol has successfully verified over 20 million cross-chain transactions so far.

In addition to robust bridging safety, zkBridge offers strong liveness guarantees since only one honest member of the validator set is required for bridging. Commenting on the integration, Hugo Philion, Flare Co-founder, said:

“Polyhedra’s zkBridge adds an additional security layer to LayerZero’s interoperability protocol and will be welcomed by Flare developers and users alike. Its integration is a sign of the growing support for Flare from cross-chain protocols and demonstrates the value of ZK technology in making it easier for value to flow freely between networks.”

zkBridge uses zkSNARKs to prove to the recipient chain that the transaction it is receiving is legitimate. zkSNARKs helps to verify block headers and consensus across different chains. Using a 2-layer recursive proof system, it is able to achieve fast proof generation and low on-chain proof verification cost to support cross-chain applications.

The Polyhedra zkLight Client technology particularly reduces on-chain verification costs and latency by allowing for the efficient batching of multiple transaction verifications into a single proof. 

According to the Chief Strategy Officer of Polyhedra, Eric Vreeland, “We are excited that the Polyhedra community has voted to support the integration of Flare with zkBridge. The level of activity on Flare has been ramping up and reliable bridging protocols are the key to accelerating this while maintaining decentralization. We look forward to seeing how Flare developers utilize zkBridge to create dapps that draw data from a rich variety of multi-chain protocols.”

With this integration, Polyhedra’s zkBridge adds a layer of security to the LayerZero messaging protocol while making it easier for data and assets to flow freely to Flare. Notably, Flare’s TVL has reached all-time highs, and the number of wallets on the network has surpassed 1M as more users have joined its growing DeFi ecosystem.