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cs.CR2026
OptChain: Achieving Optimal Throughput of Permissionless Blockchains
Chunjiang Che, Songze Li, Xuechao Wang
We introduce \textit{OptChain}, a permissionless blockchain state machine replication (SMR) protocol that achieves optimal throughput. We first establish a theoretical upper bound…
cs.CR2025
SecurePay: Enabling Secure and Fast Payment Processing for Platform Economy
Junru Lin, Mingzhe Liu, Songze Li +1
Recent years have witnessed a rapid development of platform economy, as it effectively addresses the trust dilemma between untrusted online buyers and merchants. However, malicious…
cs.CR2024
Manifoldchain: Maximizing Blockchain Throughput via Bandwidth-Clustered Sharding
Chunjiang Che, Songze Li, Xuechao Wang
Bandwidth limitation is the major bottleneck that hinders scaling throughput of proof-of-work blockchains. To guarantee security, the mining rate of the blockchain is determined by…