|Coin Proof||Proof of Work|
Bitcoin is the first digital currency to see widespread adoption.
Although payments are conducted between pseudonyms, Bitcoin cannot offer strong privacy guarantees: payment transactions are recorded in a public decentralized ledger, from which much information can be deduced.
ZCash tackles some of these privacy issues by unlinking transactions from the payment’s origin. Yet it still reveals payment destinations and amounts, and is limited in functionality.
ZCash is a full-fledged ledger-based digital currency made with strong privacy guarantees. ZCash development results leverage recent advances in zero-knowledge Succinct Non-interactive ARguments of Knowledge (zk-SNARKs). - source