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cs.CR2026
A Complexity-Theoretic Approach to Proofs of Space
Marshall Ball, Jiaxin Guan
A Proof of Space, PoS, as introduced by Dziembowski et al. [CRYPTO'15], is a two-phase protocol that enables a Prover to convince an efficient Verifier that it has allocated a larg…
cs.CR2019
Optical Proof of Work
Michael Dubrovsky, Marshall Ball, Bogdan Penkovsky
Most cryptocurrencies rely on Proof-of-Work (PoW) "mining" for resistance to Sybil and double-spending attacks, as well as a mechanism for currency issuance. Hashcash PoW has succe…