An updated look at Tornado Cash

Launched in 2019, Tornado Cash is an Ethereum-based non-custodial transaction mixer. It brings privacy to Ethereum and other smart contract-enabled blockchains by breaking linkages between fund senders and receivers using commit-and-prove zero-knowledge (ZK) proof. 

ZK technology has been gaining attention in the crypto space with the recent development of ZK rollups such as StarkNet and zkSync, adopting different regimes of ZK proofs as the cryptographic backbone of their networks. Simply put, ZK proofs are cryptographic proofs that mathematically authenticate the validity of a specific knowledge without revealing any information beyond the validity of the statement itself.