An algorithm for mining hash acts as a signature for a information file. To validate a blockchain cryptocurrency transaction, an almost distinctive hash is developed. A hash is a number that is generated from a text string and varies in length depending on the algorithm. The longer the hash, the more powerful it is. Because of the length, creating the same hash twice is almost impossible. A longer hash, however, implies more time for processing. That’s why separate coins have chosen distinct algorithms, such as Bitcoin and Ethereum.