Privacy-centric blockchains utilize cryptographic algorithms and unique protocols designed to obscure transaction details and user identities. Unlike traditional blockchains where transaction data is public, these blockchains ensure that sensitive information remains hidden from unauthorized parties. Examples include Monero, Zcash, and Dash, which implement features like stealth addresses, zk-SNARKs (zero-knowledge succinct non-interactive arguments of knowledge), and CoinJoin transactions to enhance privacy. The emergence of these solutions addresses growing concerns over surveillance, data leaks, and misuse of personal financial information in an increasingly digital world.