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Proof of Space from Stacked Expanders
[chapter]
2016
Lecture Notes in Computer Science
Recently, proof of space (PoS) has been suggested as a more egalitarian alternative to the traditional hash-based proof of work. In PoS, a prover proves to a verifier that it has dedicated some specified amount of space. A closely related notion is memory-hard functions (MHF), functions that require a lot of memory/space to compute. While making promising progress, existing PoS and MHF have several problems. First, there are large gaps between the desired space-hardness and what can be proven.
doi:10.1007/978-3-662-53641-4_11
fatcat:fz5nszj5jngtpmaqtpnvw427j4