And on that same medium.com post with again the same advertise format:
https://medium.com/@cryptoinvestor212/review-best-top-5-cryptocurrency-tumbler-reliable-bitcoin-mixer-2020-9577ac6ed932

Links: https://chipmixer.com/ < That is the official link no ?
http://chipmixerwzxtzbw.onion/   < That is the official link no ?

Coboguard is a scammer and he is behind chipmixer as well...
thank you for your participation...