The Proof of Work (PoW) algorithm is a consensus mechanism that requires a party of a network to prove a computational cryptographic problem to verify a new block in the blockchain. This form of verification secures the network from malicious acts such as double-spending acts from occurring.
PoW verfication are executed by miners that offer a high level of security, providing a decentralized method of verifying transactions.
Several cryptocurrencies utilize a PoW algorithm, such as Bitcoin, Bitcoin Cash, Bitcoin SV, Ethereum, Litecoin, Dogecoin, Zcash, Dash, Decred, and other cryptocurrencies.