Message Integrity Check refers to a method used to verify that a message has not been altered during transmission. In the context of cryptocurrency, this is crucial for maintaining the trustworthiness of transactions and communications.When a transaction is initiated, a hash function generates a fixed-size string of characters based on the transaction details. This hash serves as a digital fingerprint of the data. If even a single bit of the transaction data changes, the hash will change significantly, indicating potential tampering.To ensure integrity, the original sender can include the hash with the message, allowing the recipient to generate a new hash from the received data. If both hashes match, it confirms that the message remains unchanged. This process helps protect against fraud and ensures that users can trust the information received.Overall, Message Integrity Checks play a vital role in securing transactions and protecting against unauthorized alterations. This method enhances confidence in the system, making it essential for the reliability of digital interactions.