What (who) is Proof of work - definition

Proof of work

A SYSTEM THAT REGULATES THE FORMATION OF BLOCKS ON A BLOCKCHAIN

Proof of work system; Proof-of-work; Proof-of work; Proof of-work; Proof of-work system; Proof-of work system; Proof-of-Work; Nakamoto consensus; Proof-of-work system; Reusable proof-of-work; List of proof-of-work functions

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 computational effort has been expended. Verifiers can subsequently confirm this expenditure with minimal effort on their part.

https://en.wikipedia.org/wiki/Proof_of_work

Proof of space

MEANS OF SHOWING LEGITIMATE INTEREST IN A SERVICE BY ALLOCATING A MEMORY

Proof of Space; Draft:Proof of Space; Proof-of-capacity; Proof-of-Space; Proof-of-space; Proof of storage; Burstcoin; Proof of space-time; Proof of Space and Time

Proof of space (PoS) is a type of consensus algorithm achieved by demonstrating one's legitimate interest in a service (such as sending an email) by allocating a non-trivial amount of memory or disk space to solve a challenge presented by the service provider. The concept was formulated in 2013 by Dziembowski et al.

https://en.wikipedia.org/wiki/Proof_of_space

Proof of concept

REALIZATION OF A CERTAIN METHOD OR IDEA IN ORDER TO DEMONSTRATE ITS FEASIBILITY

Proof-of-concept; Proof of Concept; Proofs of concept; Proof of Principle; Proof of principle

Proof of concept (POC or PoC), also known as proof of principle, is a realization of a certain method or idea in order to demonstrate its feasibility, or a demonstration in principle with the aim of verifying that some concept or theory has practical potential. A proof of concept is usually small and may or may not be complete.

https://en.wikipedia.org/wiki/Proof_of_concept