• Quantum Physics [Submitted on 25 Feb 2026] Title:Hybrid Consensus with Quantum Sybil Resistance View PDFAbstract:Sybil resistance is a key requirement of decentralized consensus protocols • It is achieved by introducing a scarce resource (such as computational power, monetary stake, disk space, etc • ), which prevents participants from costlessly creating multiple fake identities and hijacking the protocol • Quantum states are generically uncloneable, which suggests that they may serve naturally as an unconditionally scarce resource • In particular, uncloneability underlies quantum position based-cryptography, which is unachievable classically • We design a consensus protocol that combines classical hybrid consensus protocols with quantum position verification as the Sybil resistance mechanism, providing security in the standard model, and achieving improved energy efficiency compared to hybrid protocols based on Proof-of-Work

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  • Quantum Physics [Submitted on 25 Feb 2026] Title:Hybrid Consensus with Quantum Sybil Resistance View PDFAbstract:Sybil resistance is a key requirement of decentralized consensus protocols. It is achieved by introducing a scarce resource (such as computational power, monetary stake, disk space, etc.), which prevents participants from costlessly creating multiple fake identities and hijacking the protocol. Quantum states are generically uncloneable, which suggests that they may serve naturally as an unconditionally scarce resource. In particular, uncloneability underlies quantum position based-c

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