user78: A Bitcoin Laundry or Mixing Service is a service that accepts BTC payments, and returns the same BTC amount, only from coins that are unassociated to the original BTC. It is a privacy service that works well if it has massive usage.
What are some good mixing services? Is there any data on how well they actually anonymize (e.g. what size are their "stashes" or user base (bigger stash = bigger anonymity)?

user153: The blockchain-based betting services could essentially be used as a mixing service, where the makeup of a wallet is significantly different after several passes through the wagering service.
It still leaves a direct trace but the set of coins held initially is mostly gone ne and the composition of the wallet after is mostly coins that weren't there before.

http://bitcointalk.org/index.php?topic=79079.0


user137: I came across Bitcoinfog at http://www.bitcoinfog.com/. They run a hidden service in TOR at http://fogcore5n3ov3tui.onion
They have been down since mid August 2012 and are not back up as of Nov 2012. I first thought they cut and ran with peoples bit coins. Which is quite a risk for sites like this. It's happened to me before as well when I was "testing the waters" by running the coins through a tumbler site.

user12087: I've been using blockchain.info and MixBit (mixbity3bxwsqmnn.onion). I really like the fact that MixBit works in Tor and doesn't need javascript nor account. 

user2467: CoinJoin is being tested and is working https://bitcointalk.org/index.php?topic=282086.20

user33: Blockchain.info has recently started up a dedicated mixing service.
Send Anonymously with Blockchain
As they were offering bonus payouts at the start I sent money via the service and it was quickly forwarded to the correct account.
To confirm how they mix the coins and the amount of taint remaining you can check the source code on github.
Source code

user22: The only one I'm currently aware of is "Bitcoin Laundry" operated by Mike Gogulski. They charge a 4.555% commission rate and do little more than accept a payment then re-send a payment. There is also (according to the Wiki) that the service is only lightly used and might not be adequate to provide any real anonymity. You might be better sending then withdrawing coins at Mt Gox with a decent delay between transactions - the sheer volume of Mt Gox's transactions as well as the size of their wallet would make them much more effective and there's nothing I'm aware of to stop you from creating an account with a throwaway email address and accessing Mt Gox through TOR/I2P/etc.

78: <p>A Bitcoin Laundry or <a href="https://en.bitcoin.it/wiki/Mixing_service">Mixing Service</a> is a service that accepts BTC payments, and returns the same BTC amount, only from coins that are unassociated to the original BTC. It is a privacy service that works well if it has massive usage.</p>

<p>What are some good mixing services? Is there any data on how well they actually anonymize (e.g. what size are their "stashes" or user base (bigger stash = bigger anonymity)?</p>
 153: <p>The blockchain-based betting services could essentially be used as a mixing service, where the makeup of a wallet is significantly different after several passes through the wagering service.</p>

<p>It still leaves a direct trace but the set of coins held initially is mostly gone ne and the composition of the wallet after is mostly coins that weren't there before.</p>

<ul>
<li><a href="http://bitcointalk.org/index.php?topic=79079.0" rel="nofollow">http://bitcointalk.org/index.php?topic=79079.0</a></li>
</ul>
 137: <p>I came across Bitcoinfog at <a href="http://www.bitcoinfog.com/" rel="nofollow">http://www.bitcoinfog.com/</a>. They run a hidden service in TOR at <a href="http://fogcore5n3ov3tui.onion" rel="nofollow">http://fogcore5n3ov3tui.onion</a></p>

<p>They have been down since mid August 2012 and are not back up as of Nov 2012. I first thought they cut and ran with peoples bit coins. Which is quite a risk for sites like this. It's happened to me before as well when I was "testing the waters" by running the coins through a tumbler site.</p>
 12087: <p>I've been using <a href="http://blockchain.info" rel="nofollow">blockchain.info</a> and MixBit (<a href="http://mixbity3bxwsqmnn.onion" rel="nofollow">mixbity3bxwsqmnn.onion</a>). I really like the fact that MixBit works in Tor and doesn't need javascript nor account. </p>
 2467: <p>CoinJoin is being tested and is working <a href="https://bitcointalk.org/index.php?topic=282086.20" rel="nofollow">https://bitcointalk.org/index.php?topic=282086.20</a></p>
 33: <p>Blockchain.info has recently started up a dedicated mixing service.</p>

<p><a href="https://blockchain.info/wallet/send-anonymously">Send Anonymously with Blockchain</a></p>

<p>As they were offering bonus payouts at the start I sent money via the service and it was quickly forwarded to the correct account.</p>

<p>To confirm how they mix the coins and the amount of taint remaining you can check the source code on github.</p>

<p><a href="https://github.com/blockchain/">Source code</a></p>
 22: <p>The only one I'm currently aware of is &quot;<a href="https://web.archive.org/web/20160219173707/http://bitcoinlaundry.com/" rel="nofollow noreferrer">Bitcoin Laundry</a>&quot; operated by Mike Gogulski. They charge a 4.555% commission rate and do little more than accept a payment then re-send a payment. There is also (according to the <a href="https://en.bitcoin.it/wiki/Bitcoin_Laundry" rel="nofollow noreferrer">Wiki</a>) that the service is only lightly used and might not be adequate to provide any real anonymity. You might be better sending then withdrawing coins at Mt Gox with a decent delay between transactions - the sheer volume of Mt Gox's transactions as well as the size of their wallet would make them much more effective and there's nothing I'm aware of to stop you from creating an account with a throwaway email address and accessing Mt Gox through TOR/I2P/etc.</p>
