Blitz: Secure Multi-Hop Payments Without Two-Phase Commits

Original paper: Blitz: Secure Multi-Hop Payments Without Two-Phase Commits. Lukas Aumayr, Pedro Moreno-Sanchez, Aniket Kate, and Matteo Maffei. 2021

I watched the USENIX conference presentation of this paper. On a high-level, to the best of my understanding, the idea is to create a transaction with almost negligible money as signal inputs to other transactions. When the signal event is on-chain, all the others can use the signal inputs to complete their transactions in one-shot.

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Figure 1: My unnderstanding of Blitz

References

Lukas Aumayr, Pedro Moreno-Sanchez, Aniket Kate, and Matteo Maffei. 2021. “Blitz: Secure Multi-Hop Payments Without Two-Phase Commits.” https://www.usenix.org/conference/usenixsecurity21/presentation/aumayr.