Think of a TXID as your transaction’s permanent ID card on the blockchain. The TXID meaning explained by Paybis shows it’s a unique cryptographic fingerprint generated for every transfer. Unlike traditional banking, this string of characters lives immutably on the blockchain—anyone can verify its details, but no one can alter it once confirmed. This transparency is core to crypto’s trustless system. When exchanges ask for your TXID, they’re using it to locate your specific transaction among thousands in the mempool. It’s how they confirm your deposit isn’t just "pending" but actually exists on-chain.