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cs.CR2026
Merged Bitcoin: Proof of Work Blockchains with Multiple Hash Types
Christopher Blake, Chen Feng, Xuachao Wang +1
Proof of work blockchain protocols using multiple hash types are considered. It is proven that the security region of such a protocol cannot be the AND of a 51\% attack on all the…
cs.CR2026
Rigorous and Generalized Proof of Security of Bitcoin Protocol with Bounded Network Delay
Christopher Blake, Chen Feng, Xuechao Wang +1
A proof of the security of the Bitcoin protocol is made rigorous, and simplified in certain parts. A computational model in which an adversary can delay transmission of blocks by t…
cs.CR2024
TetraBFT: Reducing Latency of Unauthenticated, Responsive BFT Consensus
Qianyu Yu, Giuliano Losa, Xuechao Wang
This paper presents TetraBFT, a novel unauthenticated Byzantine fault tolerant protocol for solving consensus in partial synchrony, eliminating the need for public key cryptography…