A hash value is a sequence of characters created using a mathematical function. This sequence is characterized by a high level of security, allowing you to send messages securely. Most importantly, it is a part of every cryptocurrency currently on the market, but arguably, they all have different values ​​and qualities. One thing we know for sure is that proper hashrate is part of every cryptocurrency's success rate. To put it simply, hashing is a function that compresses a message of any length into a fixed-length message digest. With a hash function, data on the Internet can be saved in the form of a fixed-length string. In the blockchain, each block has the hash value of the previous block, and the previous block is called the parent block of the current block. Since each block has the hash value of the previous block, when any data in the current block is modified, the hash value of the block will change, which will affect the previous block because it contains The hash value of the previous block.