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Cross-Blockchain Transactions: Systems, Protocols, and Topological Theory

In: Handbook on Blockchain

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  • Dongfang Zhao

    (University of Nevada)

Abstract

In this chapter, we turn our focus to those applications touching multiple blockchains. Since a blockchain deals with its data in the form of transactions, the real technical question we want to answer is how to handle cross-blockchain transactions (CBTs)? We will first present the state-of-the-art systems, i.e., exchanging cryptocurrencies between Ethereum and Bitcoin, and discuss the challenges of extending existing approaches to a more general context, such as application-specific blockchains (instead of cryptocurrencies) and an arbitrary number of blockchains (instead of two). We then review two recent schools of thought about CBT protocols and discuss their properties in detail. Finally, we sketch an ongoing research effort on building a theoretical foundation for CBTs using topological machinery.

Suggested Citation

  • Dongfang Zhao, 2022. "Cross-Blockchain Transactions: Systems, Protocols, and Topological Theory," Springer Optimization and Its Applications, in: Duc A. Tran & My T. Thai & Bhaskar Krishnamachari (ed.), Handbook on Blockchain, pages 157-193, Springer.
    • Handle: RePEc:spr:spochp:978-3-031-07535-3_5
    DOI: 10.1007/978-3-031-07535-3_5
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