The word “Proof-of-Work” signifies the similarity of block producing to actual mining. Allow us to explain PoW through the most commonly known blockchain, Bitcoin. Individual blocks in a blockchain contains a unique hash value, called BlockHash. BlockHash is a value generated from version, Merklehash, bits, previousblockhash, time and nonce values. In order to “mine” the block, a miner must find a specific hash value at the current block height, and this process is done by continuously changing the nonce value to find the right hash value. Because there is no direct correlation the nonce value and the hash value, mining computers enter random values into nonce continuously until the right hash value has been found. In the process of these computations, a large amount of computing power and electricity is consumed.