You can only be sure about the anonymity when you have an open source platform. In case of a mixer running on a server, we can’t expect 100% anonymity. Bitcoins were originated as a anonymous currency but they won’t seem anonymous anymore. We can track the transactions and find the root but using bitcoin mixer gives us full anonymity. I’ve not used several mixers but I am sure about bitclock or similar mixers.
Not really true. I could make a stupid mixer and make it open source, how people would be sure about the anonymity? People don't even understand the first line of it
ChipMixer isn't open source but still considered as the most solid out there
https://bitcointalk.org/index.php?topic=5117328.msg50036053#msg50036053.
Bitcoin was created to be pseudo-anonymous and transparent, there is a slight difference with a full anon coin
We can track the transactions and find the root but using bitcoin mixer gives us full anonymity
You can track the transactions but there is no name tied to an address that's why we say "pseudo"