The complex outcome of mathematical algorithms used for verifying data integrity and securing information.
A hash is the cryptographic result of a mathematical function or algorithm. It is used in computing languages or environments to represent locks and keys in information sharing. Hash functions, therefore, are very useful data structures, especially in modern computing that is very complex and characterized by advancing breaching concepts that make it difficult to secure information systems.
Hashes have become very popular since the advent of blockchain technologies and cryptocurrencies. Currently, they serve as one of the pillars of blockchain networks, especially with regards to recording transactions on blocks.