Interoperability Between DLT Following a Gateway-Based Approach: The Case of Ethereum and Hyperledger Fabric

Leveraging Zero-Knowledge Proofs for Blockchain Interoperability: Experiences with Ethereum and Hyperledger Fabric

“…Certain interoperability solutions provide coordination capabilities that enable them to coordinate transactions to maintain consistency between blockchains [16]. Other interoperability solutions do not rely on a third party to coordinate local transactions, and delegate this task to special smart contracts on each blockchain [7].…”

“…Pandolfi et al [7] proposed an interoperability solution for Ethereum and Fabric following the gateway-based approach. The authors added a router component to the approach to avoid point-to-point communication between gateways.…”

“…The proposed approach applies the concept of anonymous credentials to enable anonymous cross-chain authentication between Ethereum and Fabric. This approach was applied to the gateway proposed by Pandolfi et al [7] that enables interoperability between these blockchains. Fig.…”

“…We used the ZoKrates toolbox to generate and verify the zkp. The mechanism was applied to the gateway-based interoperability solution proposed by Pandolfi et al [7]. Two new components were defined: 1) a ZoKrates adapter that enables to generate off-chain zkp of data belonging to Fabric and 2) a zkp verifier implemented as a smart contract on Ethereum.…”

“…Ethereum and Hyperledger Fabric 1 ): 1) anonymous cross-chain authentication and 2) private data exchange between these blockchains. The experiments were performed over a gateway-based interoperability solution proposed by Pandolfi et al [7] that was modified to include these capacities.…”