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Re:The Dark Web’s Top Drug Market, Evolution, Just Vanished by Phlarp on Wednesday March 18, 2015 @05:13PM (#9228732)
I'm surprised we haven't seen more theft and fraud with the tumblers. I used one out of curiosity about two years ago and the experience was basically to fill out a super shady looking webform, send the coins to the address it gives you, and then pray like hell that they come back out the other end.
Re:The Dark Web’s Top Drug Market, Evolution, Just Vanished by DINKDINK on Wednesday March 18, 2015 @08:05PM (#9229467)
The CoinJoin proposal[0] by Greg Maxwell provides transaction-history-tracing erasure capabilities. JoinMarket[1] is a market driven approach to incent CoinJoin mixing

[0]https://bitcointalk.org/index.php?topic=279249.0 [1]https://bitcointalk.org/index.php?topic=919116.0

Re:The Dark Web’s Top Drug Market, Evolution, Just Vanished by maxerickson on Wednesday March 18, 2015 @05:45PM (#9228906)
It kind of ironic, but dark markets are in a great position to offer a coin re-tainting service.

It isn't quite the same thing as a tumbler, but they have busy addresses and lots of volume to obscure things with.