Research and Implementation of Multi-chain Digital Wallet Based on Hash TimeLock

In terms of interoperability between different blockchains issue and achieving value exchange between different blockchains, a convertible multi-chain digital wallet solution is proposed. The wallet realizes the exchange of different digital currency assets by hash timelock technology. In traditional blockchain projects, each blockchain is a closed island. Users need to exchange different digital currencies through centralized Exchanges, this is contrary to the idea of decentralization and non-tamperability of blockchains, safety and reliability depend entirely on Exchanges. By introducing hash timelock technology, multi-chain digital wallet can realize the exchange of digital assets in different blockchains without third-party intermediary, ensure its de-centralization characteristics, safety and reliability.