Would companies try to blacklist coins that have been mixed with CoinJoin? What is taint? What is wallet fingerprinting?

This question is from the May monthly subscriber session, which took place on May 25th 2019. If you want early-access to talks and a chance to participate in the monthly live Q&As with Andreas, become a patron: https://www.patreon.com/aantonop

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Andreas M. Antonopoulos is a technologist and serial entrepreneur who has become one of the most well-known and respected figures in bitcoin.

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22 COMMENTS

  1. What are your thoughts about getting the community to start describing bitcoin as Satoshi’s instead? I feel the price is doing a dis-service to understanding and adoption of the medium

  2. It doesn't matter whether BTCs are tainted or not. Once an address is blacklisted by the govt/FBI BTC's censorship resistance goes to shit. Good luck spending or sending BTC to "illegal" addresses.

  3. @Andreas:

    Thanks Andreas. As you usual you're very valuable. I've a question and not sure if it is the right place to ask here, but i would appreciate it if you could make a new video for it.

    My question: Do you think hardware wallets (i.e. Ledger, Trezors) have the ability to find out your current balance, history of transactions , or freeze your funds from their end?. For example, you purchase a hardware wallet and they have a record with your name and the HW code ID associated with your name. In case the HW company want, or insider employee, or government force the company to pull out your activities/history of transactions on your HW and freeze your fund, is that possible?

  4. 1) Taint could be for an amount of time rather than a number of transactions.
    2) Taint does not have to be all coinjoins but could rather be any transaction that has been identified as theft. Say that some country figures out some coins were a donation to Isis, they could make it so that owning those coins or any coins that has shared adresess with those coins illegal/supporting terroism. This would remove incentive for using coinjoins, since you might mix with illegal.

    Overtime you could expand the number of illegal coins, creating a white and black market for bitcoins where one part is AML/KYC:ed and probably a lot higher in demand, since it's the only one instituions can invest in, allowed to use to purchase from companies etc. And another that is borderless, censorship resistant, open etc. This is what I would do if I tried to kill bitcoin.

    It doesn't have to be illegal everywhere to make a difference, only a few big markets would send the signal.

  5. I don't think an extremely simple method like Samourai Wallet's Ricochet will work for long – such "k+1 bouncing transactions" are obviously different than any other transactions, so the blockchain analyzer could simply ignore them, effectively turning "k+1" hops into only 1 hop.

  6. How many in 2019 pay their employees in bitcoin with identical amounts? It seems to me these coinjoin transactions are super obvious. Wouldn’t this be a problem if an exchange saw that one of their users was using these services?

  7. I know Bitcoin is the most known and used, but for privacy transactions, wouldn't be better to use proper coins built for this?
    Waiting for something to change in Bitcoin, isn't like to wait for a kit to change the motor of a pickup to enter in the electric car trend? Why not to buy the electric car?
    In the same way, could you share your concerns about Monero?
    Thank you, you're an example for all of us, trying to educate ourselves and the others around us.

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