ReasonJun

Keccak256 is a cryptographic hash function that takes an input of any length and produces a fixed-length output of 256 bits. It is a one-way function, which means that it is easy to compute the hash of an input but very difficult to reverse the hash and find the original input. Keccak256 is used in a variety of cryptographic applications, including digital signatures, message authentication code..

Events and emit are two important concepts in Solidity. Events are a way to log and notify external entities (such as user interfaces or other smart contracts) about specific occurrences within a smart contract. Emit is the keyword used to trigger or emit events within the smart contract code. Events are similar to logs or records that capture important information, allowing external observers t..