A handful of SDN-shown pools even now have an “operator” authorization. Of those, two belong to really previous, now-unused variations of Tornado Cash. The remaining swimming pools both have newer, immutable versions, or had been employed so minor they have been very likely neglected through the May 2020 closing update. https://six-1535.com/why-tornado-cash-is-the-go-to-privacy-protocol-for-copyright-users/