Proof of work, when POW was first invented, was used to prevent spam. After a while, it was used in the electronic cash system Under the surface, what the mining in POW is actually doing is converting kinetic energy (electricity) into an account block. A miner repeatedly runs the hash calculation until it solves a cryptographic problem. All hash operations are discarded, except for the hash value that solves the problem. This tiny hash value only takes very little energy to calculate, but it ...

Proof of work, when POW was first invented, was used to prevent spam. After a while, it was used in the electronic cash system Under the surface, what the mining in POW is actually doing is converting kinetic energy (electricity) into an account block. A miner repeatedly runs the hash calculation until it solves a cryptographic problem. All hash operations are discarded, except for the hash value that solves the problem. This tiny hash value only takes very little energy to calculate, but it ...