Proof of work (PoW) is a form of cryptographic proof in which one party (the prover) proves to others (the verifiers) that a certain amount of a specific...

Proof-of-stake (PoS) protocols are a class of consensus mechanisms for blockchains that work by selecting validators in proportion to their quantity of...

al.. Proofs of space are very similar to proofs of work (PoW), except that instead of computation, storage is used to earn cryptocurrency. Proof-of-space...

Proof of authority (PoA) is an algorithm used with blockchains that delivers comparatively fast transactions through a consensus mechanism based on identity...

instead of SHA-256. Peercoin, created in August 2012, used a hybrid of proof-of-work and proof-of-stake. Cryptocurrency has undergone several periods of growth...

of several layers: infrastructure (hardware) networking (node discovery, information propagation and verification) consensus (proof of work, proof of...

process based on proof of work, called mining, that guarantees the security of the bitcoin blockchain. Mining consumes large quantities of electricity and...

notable types of consensus mechanisms are proof-of-work and proof-of-stake. By 2007, a number of distributed systems for the prevention of double-spending...

been designed to be less energy intensive than the more widely used proof of work, although there is disagreement about how secure and decentralized this...

Coin, PP Coin, or PPC, is a cryptocurrency utilizing both proof-of-stake and proof-of-work systems. Peercoin is based on an August 2012 paper that listed...