Cardano ensures immutability and auditability of ledger data through cryptographic hashing, digital signatures, and distributed consensus mechanisms that create a tamper-resistant and verifiable record of transactions, blocks, and ledger state changes, enabling transparent and trustless verification of blockchain history and integrity.Cardano ensures immutability and auditability of ledger data through cryptographic hashing, digital signatures, and distributed consensus mechanisms that create a tamper-resistant and verifiable record of transactions, blocks, and ledger state changes, enabling transparent and trustless verification of blockchain history and integrity.