A hash is a fixed-length code representing any length of words, messages, or data generated by a hashing algorithmHashing algorithms are mathematical functions that map data of any size to a fixed length, used to create digital fingerprints.... In cryptoCrypto is a digital asset and medium of exchange employing cryptography to secure transactions, control the creation of new units,... projects, hashing algorithms transform transaction dataTransaction data is information that is stored on the blockchain and represents a record of a transaction. This data can... into a shorter, fixed-length output code called a hash. Examples of other processes that use hashes include data encryptionEncryption is the process of encoding an original form of information called plaintext using an algorithm called a cipher. The... and verifying the authenticity of transactions.
See https://www.coindesk.com/markets/2017/02/19/bitcoin-hash-functions-explained [Coindesk]
See https://www.thesslstore.com/blog/what-is-a-hash-function-in-cryptography-a-beginners-guide/ [The SSL Store]
