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Description
One of the key use cases of blockchain integration is asset bridging: in essence, "locking" an asset (typically, a native coin or token) in a smart contract on its authoritative ledger and making available corresponding, newly minted (wrapped/shadow/...) assets on another. By now, bridging is supported by quite mature solutions in the cryptoworld; however, the same is not true for "consortial" distributed ledger technologies. At the same time, such functionality can be expected to become an important requirement in the not too distant future: for instance, a central bank may choose to create a high performance, Hyperledger Fabric-based Central Bank Digital Currency (CBDC) ledger with a strongly controlled set of "smart contracts", but allow controlled "bridging out" of the currency to dedicated distributed ledgers of industrial/enterprise cooperations. Last year, a CBDC prototype with such functionality was created at the Dept. of Measurement and Information Systems of the Budapest University of Technology and Economics (BME), in a research project supported by the central bank of Hungary (MNB); our initial experience with a custom Hyperledger Cactus and TokenBridge based solution showed that this is a problem worth more targeted experimentation and systematic R&D.
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