A handful of SDN-stated swimming pools nonetheless have an “operator” authorization. Of such, two belong to very previous, now-unused versions of Tornado Cash. The remaining swimming pools possibly have newer, immutable versions, or have been used so very little that they were likely disregarded over the Might 2020 remaining update. https://sbahiskurdu.info/why-tornado-cash-is-the-go-to-privacy-protocol-for-copyright-users/