A few SDN-shown pools nonetheless have an “operator” authorization. Of such, two belong to incredibly old, now-unused variations of Tornado Cash. The remaining swimming pools possibly have more recent, immutable variations, or have been applied so minimal which they were being probable neglected over the May well 2020 final update. https://portndb.com/how-tornado-cash-enhances-privacy-for-ethereum-and-bnb-transactions/