Computer Science > Cryptography and Security
[Submitted on 14 Oct 2020 (v1), last revised 28 Jun 2021 (this version, v2)]
Title:Towards Cross-Blockchain Smart Contracts
View PDFAbstract:In recent years, manifold blockchain protocols have been proposed by researchers and industrial companies alike. This has led to a very heterogeneous blockchain landscape. Accordingly, it would be desirable if blockchains could interact with each other. However, current blockchain technologies offer only limited support for interoperability, thus preventing tokens or smart contracts from leaving the scope of a particular blockchain.
As a first step towards a solution for cross-chain smart contract interactions, we introduce a framework which allows to invoke a smart contract from another blockchain. We offer support for continuing a smart contract after receiving a result from a different blockchain, and for calling smart contracts recursively across blockchains. We provide a reference implementation for Ethereum-based blockchains using Solidity and evaluate the performance regarding time and cost overheads.
Submission history
From: Markus Nissl [view email][v1] Wed, 14 Oct 2020 18:39:52 UTC (106 KB)
[v2] Mon, 28 Jun 2021 14:27:26 UTC (168 KB)
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