Supervision : Maria POTOP-BUTUCARU

Security and reliability of cross-chain exchanges

en The technological lock that this thesis addresses is therefore the interoperability of blockchains. Each blockchain is an independent environment with its own network, protocol and rules. They were not necessarily designed with interoperability in mind. By checking the history of transactions and identifying the author of a transaction thanks to digital signatures, it is possible to verify whether or not a transaction can be added to the chain. But to date, there is no mechanism for coordinating transactions between multiple chains to make an exchange. A system for exchanging crypto-assets between two chains seeks to satisfy the following properties; atomicity, the exchange takes place entirely or not at all, security, the participants do not risk losing their crypto-assets and finally vivacity, the duration of the exchange must be limited in time.

2019-2022 Publications

• 2022
  • L. Lys : “Sécurité et fiabilité des échanges inter-blockchain”, thesis, phd defence 07/05/2022, supervision Potop-butucaru, Maria (2022)
  • L. LYS, M. Potop‑Butucaru : “Distributed Blockchain Price Oracle”, (2022)
• 2021
  • L. LYS, A. Micoulet, M. Potop‑Butucaru : “R-SWAP: Relay Based Atomic Cross-Chain Swap Protocol”, ALGOCLOUD 2021: 6^th International Symposium on Algorithmic Aspects of Cloud Computing, vol. 13084, Lecture Notes in Computer Science, Lisbonne, Portugal, pp. 18-37, (Springer International Publishing), (ISBN: 978-3-030-93043-1) (2021)
  • L. LYS, A. Micoulet, M. Potop‑Butucaru : “R-SWAP: Relay based atomic cross-chain swap protocol”, (2021)
• 2020
  • L. LYS, A. Micoulet, M. Potop‑Butucaru : “Atomic cross chain swaps via relays and adapters”, Proceedings of the 3^rd Workshop on Cryptocurrencies and Blockchains for Distributed Systems, London, United Kingdom, pp. 59-64, (Association for Computing Machinery), (ISBN: 9781450380799) (2020)
• 2019
  • L. LYS, A. Micoulet, M. Potop‑Butucaru : “Atomic Swapping Bitcoins and Ethers”, SRDS 2019 - 38^th International Symposium on Reliable Distributed Systems, Lyon, France (2019)