Ethereum’s premier coin mixing service is now permissionless.
Tornado Cash, a privacy tool for obfuscating the history of Ether (ETH) transactions, completed a cryptographic process known as a trusted setup ceremony on May 10 followed by a contract update on Monday to create perpetually self-executing code.
Tornado Cash v1 first launched in August 2019, but remained an audited “experimental software” because the developers retained control over user funds through a multi-sig wallet.
With v2, all that is gone. The MPC and Monday’s contract update effectively break up the developer key by creating a crowdsourced smart contract without a private key.
Read in full https://www.coindesk.com/developers-of-ethereum-privacy-tool-tornado-cash-smash-their-keys