[contingencies]

One of the AlphaBay alleged charges was money laundering because they built in a mixer.

See https://en.wikipedia.org/wiki/AlphaBay#Timeline for a summary.

After they went down, another major mixer, BitMixer, apparently saw this as a significant legal change to the status quo and announced they were shutting down by choice, shuffling users off elsewhere.

[mirimir]

OK. But for BitMixer, that's a failure of conviction or nerve or whatever, or maybe a change of heart. And whatever it's about, there aren't any implications about the feasibility of darknet mixers, markets, etc. Except, I suppose, if owners have made foolish assumptions about their privacy and security.