A handful of SDN-detailed swimming pools still have an “operator” authorization. Of these, two belong to incredibly old, now-unused variations of Tornado Cash. The remaining swimming pools both have newer, immutable versions, or ended up used so tiny they ended up probably neglected over the May possibly 2020 final update. https://kinospravka.com/tornado-cash-explained-how-it-ensures-unmatched-confidentiality-on-ethereum-and-bnb/