Proof of Work is the mechanism for consensus in the blockchain system that allows users to verify transactions made on Blockchain networks. It tracks cryptocurrency transactions and transactions in a secure manner. It was created in order to keep the records and transactions private to ensure that they are not altered by any legislative agency or third party for example, banks.

It is true that Proof of Work is associated with Bitcoin However, it was developed 10 years before the release by Santoshi's Whitepaper. The authors behind the development of the consensus of proof of work protocols are Moni Naor, and Cynthia Dwork which was in 1993. The idea was endorsed through Markus Jakobsson and Ari Juels in 1999. It was further modified to suit the needs of Hal Finney in 2004, who proposed the use of proof of work for cryptocurrency solely that is based on the the SHA-256 algorithm initially.

Proof of Work (PoW) is the basis of a variety of cryptocurrencies and allows secure consensus to be achieved. It is a secure and tested method that ensures that the safety of a blockchain that is decentralized. Other cryptocurrency that utilize the method are Dogecoin, Litecoin, and Bitcoin.