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The current state of coin-mixing services

As we wait for emerging cryptocurrencies such as Darkcoin and the standardisation of Dark Wallet the current task of coin-mixing remains an immediate issue. As it stands Bitcoin Fog remains the gold standard of coin-mixing. However, it is important that people be made away that this is a slow process. Bitcoin Fog insist on six confirmations for deposits and will set a minimum delay of six hours for withdrawals to occur to held randomise/anonymise the process. This is a sound process for those approaching their transactions in a structured and planned manner. It is not ideal for anyone trying to get money quickly from one account to another.

On this basis we can say Bitcoin Fog remains the gold standard in long-term scheduled coin-mixing. Presumably this appeals most to vendors who are washing large amounts of Bitcoins (numbers most of us will likely never see!). It might also appeal to those content to sacrifice speed for privacy as a rule. Fees remain at 1%-3% in random order and this could be a hefty cut the larger the transaction. Nonetheless the service remains broadly unchallenged in terms of obfuscation. Bitcoin Fog is, further, only accessible through Tor though a clearnet gateway is sometimes running (https://gate.bitcoinfog.com/)

The second service to be analysed is the ‘Shared Coin’ feature of Blockchain.info. A descendent of their original ‘Shared Send’ feature (currently discontinued) this method suits those undertaking transactions with an eye toward the medium-term. In the old ‘Send’ service one essentially had a mirror of Bitcoin Fog’s process of absolute disconnection between transactions. Coins sent from one wallet to another had no connection except perhaps to the most determined of analyst.

However, these days the only option available is ‘Shared’ coin where one mixes in their transaction with a number of others thus muddling precisely who has sent coins to who.This is not fool-proof as a method since a certain degree of ‘taint,’ which can be more easily analysed, remains and thus we might say that this method introduces a degree of plausible deniability. The process is also relatively slow since one’s transaction is occurring within a much larger pool than normal and thus confirmations can take a little while to process.

In this sense we can safely call ‘Shared Coin’ a medium-term solution for those who simply wish not to have openly transparent transactions, but who are not absolutely attempting to disguise their wallet interactions. This service is likely to suit most casual Bitcoin users and darknet market customers will surely find it appealing in their efforts to at least provide some basic cover for their interactions with the various marketplaces. Darkcoin’s Darksend may make this requirement obsolete as a general wallet feature, but for now thisis the best option for most users. There is no extra cost to Sahred Coin beyond standard transactions fees (and if one chooses to increase repetitions a donation of 0.5% is asked for, but not required).

A more recent mixing service is Bitmixer (https://bitmixer.io/) whose entry to the market is relatively new. In such cases a certain degree of caution should always be carried by anyone employing it. Bitmixer draws upon its own pool of Bitcoin reserves and each deposit arrives at the end of the chain. The top end of the chain is used to further one’s deposit amount to a forwarding address thus breaking the link between wallets as one desires. It is an interesting service although it is not the easiest to use. The site design remains a little confusing and it is the opinion of this writer that a more direct input/output field should be implemented by the service. This is to avoid problems from users depositing funds, not waiting long enough for the deposit, and then trying to forward too early.

When this occurs one is provided with a new address with no real sense of whether this process has worked until the coins arrived at the desired destination. This is not a major flaw, but simply one that can be surely seen as a possible bug to be ironed out. That being said in terms of speed bitmixer.io offers the best short-term solution to disconnecting wallets albeit by placing their trust in a centralised system built on a reserve of coins. Neatly a letter of Letter of Guarantee is provided for those wishing to contact support and
a brief generic test revealed support to be prompt in responding to inquiries. Their reserve wallet currently holds 1632.32 BTC which should keep them in shape for a while to come.

It is important to keep in mind that anonymity in using any such service depends on constant self-vigilance. Accessing the latter two should be, at a minimum, through a VPN and make sure to cycle your IP address as much as possible. Furthermore, it is wise to sign up with a throw away address and for Shared Coin and undertaking each process with a new wallet. Any contact with a centralised service, such as Bitmixer, should be taken from a dummy account too. This is best for both parties though the simple act of the deposit ties you to at least one particular action. It is our opinion that the sensible user of any dark net marketplace ought to plan their transactions in advance by mixing their coins through Bitcoin Fog over Tor after deciding on their purchase. Once this process has occurred they will be operating at, at least, a decent level of privacy. Coupled with astute use of PGP encryption oneis, then, only left at the mercy of customs.

23 comments

  1. My bitlaundry.com and bitcoinlaundry.com continue to operate since early 2011…

  2. You must to add in your article bitblender, a great and fast mixer hidden service.
    http://bitblendervrfkzr.onion.top

    I used this service several times when FOG was offline and bitblender always worked fine and fast, it is being well discussed in SR forums. A good 2nd option for mainstream mixers.

  3. Bitcoin Fog is a scam. I deposited, and then withdrew, and all of a sudden they disabled my account and I never received the btc.

    fogcore5n3ov3tui.onion.top is a scam

    • johny

      Have the same thing…

      They scammed me too. Dont use bitcoinfog people..In the beginning it will work but once you have enough in the account you will loose it..Lost 2 bitcoins!

    • Badbill

      I lost 4.15 bitcoins today. Bitcoinfog will not respond to my messages. Is there anything I can do???

  4. BEWARE OF BITCOIN FOG – SELECTIVE SCAMMERS!!!

    I lost over 2 bitcoins by using them. I had been using bitcoinfog for smaller amounts, gained my trust and then just like Johny said as soon as you deposit any decent sum they just take your bitcoins. Within 5 minutes of the bitcoins hitting Bitcoin Fog they were transferred away. Bastards!

    Gutted.

    Feel like a total mug. Don’t end up the same as me. Use another service! Has anyone else got experience using another service that actually doesn’t rip you off like these total assholes do.

  5. Have you tried MixMyCrypto.com?

  6. Don’t use Bitcoin Blender. It’s a scam; I lost several bitcoins.

  7. More than 1000 users use Safetybit.info as a Wallet&Mixing Service! Join us!

  8. Just to say I’ve lost my BTCs too on Bitfog. Following the transaction on blockchain, there were 99 confirmations, and still no money on my account. I add that one time I created my adress, there were impossible to create a second, so my first transaction passed trough with no problem, but the second deposit never arrived, without using tor…
    Karma runs, and I’m in peace with that…

  9. FuckYouCleanCoin

    Stay the hell away from the CleanCoin mixing service (cleancondgqja34b.onion.top). They are absolute scumbag scammers. FuckYouCleanCoin!!! Just try to use their contact us service, it doesn’t work at all.

  10. I had 4.15 BTC in my Bitcoinfog account yesterday. Today an unauthorized withdrawal of all my bitcoins down to the last cent was made leaving with a balance of 0.00000000. Bitcoinfog support refuses to respond.

  11. DON’T I REPEAT DON’T USE BITMIXER

    Scammed me for a lot of coins here recently I contacted customer support but said it was nothing they could do. With my letter of guarantee. Those bastards are the most fucked up people I have ever encountered. Don’t care if it’s hard earned money that you lost. They got my coins and just said fuck you

    • klodsack

      I’ve been using bitmixer.io for half a year now, and I’m still using this service on a weekly basis, to my complete satisfaction. The letter of guarantee is pgp verified proof that you deposited bitcoins, so I don’t understand your comment. Maybe you messed things up yourself somehow? I had one time that my coins were stuck, support was helpful, checked my letter of guarantee and I got the coins with some delay. (A bit of downtime is normal for any online business and as long as there is good support, acceptable)

      I will vouch for nobody in the tumbling business, but bitmixer.io has been good to me.

  12. Bitcoin Fog did the same scam to me waiting a decent while then taking my coins.

  13. Bitcoin Fog is definitely a scam. They will steal your bitcoins after they have gained your trust.

  14. Whoops I recant what I said! I guess they were having DDoS attacks and there was delays. I ended up getting my coins. My apologies.

  15. Darklaunder has disabled my account and stolen 20 BTC from me. None of their support links work and they have no email address to contact them with.

  16. i used bitcoinfog {scam url!} .org and deposited btc, nothing has shown up in the account even though the block has about 70 confirmations on it. its been almost 24 hours. am i screwed?

  17. Bitcoin is a scam, no support what so ever.

  18. i used bitcoinfog.org and im lost bitcoins is that a scam??

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