Is synonymous with a Main subset with the Tornado Cash sensible contracts: the Tornado Cash pools. The overwhelming majority of such contracts are immutable. That's, they've no ability to be up-to-date or taken off by everyone. A whole listing of sanctioned, immutable Tornado Cash pools can be found in Appendix https://daniele-luyckx.com/understanding-tornado-cash-the-future-of-private-transactions-in-the-copyright-world/