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Communication dans un congrès

Game theoretical analysis of Atomic Cross-Chain Swaps

Abstract : In this paper we address the distributed cross-chain swap problem in the blockchain context where multiple agents exchange assets across multiple blockchain systems (e.g. trading Bitcoins for Litecoins or Ethers). We present a mathematical framework allowing to characterize blockchain swap protocols as the combination of a publishing and a commitment phase, where contracts are respectively published and then committed. We characterize the equilibria of existing cross-chain swap protocols (i.e., blockchain swap protocols exchanging assets among different blockchains). More precisely, we prove that following a swap protocol characterized by concurrent publishing of exchange contracts and snap (immediate) assets transfers is a Nash equilibrium. Furthermore, we prove that for protocols with a sequential publishing and commitment of the assets transfers, following the prescribed protocol is a sub-game perfect equilibrium.
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Communication dans un congrès
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https://hal.archives-ouvertes.fr/hal-02414356
Contributeur : Marianna Belotti <>
Soumis le : mercredi 29 avril 2020 - 18:00:50
Dernière modification le : mercredi 24 juin 2020 - 16:19:56

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  • HAL Id : hal-02414356, version 4

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Marianna Belotti, Stefano Moretti, Maria Potop-Butucaru, Stefano Secci. Game theoretical analysis of Atomic Cross-Chain Swaps. 40th IEEE International Conference on Distributed Computing Systems (ICDCS), Dec 2020, Singapore, Singapore. ⟨hal-02414356⟩

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