Bitcoin Association - Have you ever wondered why TXID is the double SHA256 hash or SHA256d of a serialized Bitcoin transaction? 📖: To find out why and for more information on TXID
The Difference Between SHA-1, SHA-2 and SHA-256 Hash Algorithms
SHA-256 - Wiki | Golden
How to Install the Outline Knowledge Base & Wiki on Ubuntu (The Easy Way) - Thomas Griffin
Secure Hash Algorithms | Brilliant Math & Science Wiki