THE PRIVACY LAYER

Summary from the TLDR Crypto newsletter

Onchain privacy has evolved from failed attempts, including CoinJoin mixers with <1% Bitcoin transaction usage, Monero's regulatory delisting despite technical success, Zcash's optional privacy leading to only 5% shielded adoption, and Tornado Cash's $16 billion volume ending in OFAC sanctions after 30% of deposits were illicit, demonstrating that pure anonymity without compliance fails at scale. Scroll's Cloak enables selective disclosure where transactions are processed by permissioned sequencers generating ZK proofs without publishing raw data onchain, allowing businesses to hide details from competitors while providing audit trails to regulators, with live implementations including ether.fi Cash processing $65+ million across 785,000 transactions and Shiga Digital bringing private stablecoin finance to African markets. Vitalik Buterin emphasizes privacy as a required feature for Ethereum, advocating for privacy pools with compliance proofs and selective disclosure rather than total opacity as the path forward for the next decade.