Polygon on Oct. 19 introduced Polygon CDK Besu, which it says lets financial institutions connect private blockchains to other networks while retaining control over validators and transaction access.
The product is intended for banks and consortia that want to move assets between networks without arranging a separate bridge integration for each connection, Polygon said. The system runs QBFT consensus on Hyperledger Besu, with institutions operating their own validators and deciding which accounts may transact.
Polygon says transaction records stay within an institution’s infrastructure. Agglayer receives the bridge information required to account for transfers between connected networks, rather than the private chain’s full transaction record.
For each transfer, a zero-knowledge proof checks the bridge’s balances. If that check succeeds, a certificate covering the bridge activity settles on Ethereum. Polygon says the proof does not verify every transaction conducted on the private network.
The company says Polygon CDK Besu is ready for production deployment on Ethereum mainnet. Polygon says organizations already operating Besu networks can connect them to Agglayer, though that process differs from setting up a new CDK Besu chain. Polygon also says institutions do not owe it a share of revenue for using the system.
