SHA-256 produces a 256-bit (32-byte) hash value.
What is SHA-256?
The SHA (Secure Hash Algorithm) is one of a number of cryptographic hash functions. A cryptographic hash is like a signature for a text or a data file. SHA-256 algorithm generates an almost-unique, fixed size 256-bit (32-byte) hash. Hash is a one way function – it cannot be decrypted back. This makes it suitable for password validation, challenge hash authentication, anti-tamper, digital signatures.
SHA-256 is one of the successor hash functions to SHA-1, and is one of the strongest hash functions available.
With this online tool you can easily generate hashes.
This is the actual function used for mining Bitcoin. You can trade cryptocurrency and alcoins on Binance.