Hashing security methods are essential for ensuring the integrity and security of transactions in blockchain technology. At the core of these methods is the use of cryptographic hash functions, which convert input data into a fixed-length string of characters. This process generates a unique hash for each input, making it nearly impossible to reverse-engineer the original data from the hash.When a new transaction is created, it is hashed along with the hash of the previous block, forming a chain. This linking creates a secure record, as altering any transaction would change its hash, subsequently invalidating the entire chain. Thus, any tampering becomes easily detectable.Hashing also aids in maintaining decentralization. Miners confirm new transactions by solving complex mathematical puzzles that require significant computational power. Once solved, the hash is added to the blockchain, making it publicly verifiable.Overall, hashing provides a robust layer of security, ensuring data integrity, preventing fraud, and maintaining trust in the system without the need for a central authority.