it is difficult to determine whether these domains are really owned by the original Chipmixer.
Actually, it's easy: ChipMixer only owns these sites:
(only one clearnet domain)
The fake site showing the real .onion is only meant to trick people into believing it's the real site (and judging by your post: it works!). They know that clearnet-users won't switch to .onion if they don't have to.
All drop accounts for Wire Transfer and Pick up funds , for only serious hackers and Buisness clients .