Zcash is pioneering a new approach to privacy in decentralized transactions by implementing zk-SNARKs technology. This cryptographic method allows transactions to be verified without disclosing the sender, receiver, or transaction amount, addressing the challenge of maintaining privacy within a decentralized framework. Unlike Bitcoin, which makes all transaction details public, Zcash's use of zk-SNARKs ensures that transaction details remain confidential while still proving their validity.