Quote from: suchmoon on Today at 01:33:44 PM

As for a centralized mixer using this - there might be some problems (e.g. liquidity and perhaps even anonymity if they try to grab more liquidity with multiple nodes).

Becoming a taker, I would always provide strong liquidity, forever, which is built up from a wide variety of UTXOs which continually refreshes naturally based on regular mixing, let alone JoinMarket participation.

As far as anonynimity is concerned, I am unsure of what the issue would be? I would need to keep track of which UTXOs had been presented with in combination with others, which is not a huge task, I think the JoinMarket software already does this, however I would be writing the Maker implementation code from scratch (I don't code with Python) and later a Taker implementation for on-demand ad-hoc Cold purposes. I wouldn't have 4 "mixing depths", I would do my own entirely separate thing picking UTXOs and Output Addresses accordingly based on my own requirements.

Quote from: suchmoon on Today at 01:33:44 PM

And I'm still not certain if you're solving a problem that actually needs solving. I use CoinJoin for non-custodial mixing. I use a centralized mixer to get coins faster if I need to and if I'm willing to take the risk. Jumping the TX graph is a non-issue for me after several rounds of CoinJoins and even if it was, a centralized service using CoinJoin has the same problem, doesn't it? If I use it a few times they can't ensure that I won't get my own coins.

It does have the same problem, in terms of making coins produced from the Mixer look like they've been produced from a CoinJoin, which is why this is a discussion only for the moment.

There are key couple of problems it does solve:

Chain Analysis companies, would find it impossible to keep track of Mixer wallets / clusters. no matter how much they used it, or how much dust attacks then send.
Coins sent out from the Mixer could never be tainted with past activity, other than endless CoinJoins
Coins sent to the the Mixer could never be associated with the original user, due to the endless CoinJoins
Possibly most importantly and selfishly, I may be able to withdraw coins myself, with confidence