Moshe Shababo

Dec 23, 2019

8 min read

Hard-drive space as a tangible, scarce Sybil resistance resource: the PoST protocol

Proof of Space-Time (PoST) is a new cryptographic primitive, designed to replace Proof of Work (PoW) as a proof-of-resource-consumption scheme, and so as a Sybil-resistance mechanism for permissionless cryptocurrencies. It was introduced in 2016 by Tal Moran and Ilan Orlov in a paper titled “Simple Proofs of Space-Time and Rational Proofs of