Cryptographic hash functions ensure blockchain data immutability for coins like Bitcoin (BTC), $ALGO
Algorand (ALGO), and VeChain (VET). Functions like SHA-256 (BTC) create unique, fixed-length hashes for transactions, making tampering evident. Any alteration changes the hash, breaking the chain’s integrity. ALGO’s Pure PoS uses hashes to secure consensus, while $VET
VET’s supply chain tracking relies on hashes for data consistency. Hash functions are deterministic, collision-resistant, and fast, ensuring robust security. However, quantum computing could challenge collision resistance, requiring upgrades. BTC’s hash-based Merkle Trees, ALGO’s consensus, and VET’s traceability all depend on hash immutability, making them critical for trustless systems.