• bartolomeo@suppo.fi
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    5 months ago

    Does Trump then sell BTC for USD on an exchange and then pay tax on it? Why didn’t the Winklevii just send USD?

    I don’t get this use-case for BTC, overbanking the overbanked.

    • dhork@lemmy.world
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      5 months ago

      The Winklevii sent BTC because they have a buttload of it, bought at a very low price. Their actual cost for that donation is basically the long-term capital gains tax (and maybe not even that if their accountants are creative).

      And yes, Trump (or his campaign) have to convert that to fiat at an exchange. (Probably Gemini, owned by the Winklevii.) But the key thing is that with Crypto, they have no way of knowing where the donations are actually coming from. Someone in Saudi Arabia or Russia could be filling out donations forms through a VPN, and list their location as Branson, MO, and there would be no way for anyone to prove it wasn’t really from Branson. (Maybe if they were careless and reused BTC addresses. Some Monero shill will probably reply and make sure everyone knows how Monero is even better at money laundering…)

      • prole
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        5 months ago

        I mean just because you say some pithy thing at the end doesn’t make it wrong. Nobody should still think, in 2024, that Bitcoin is in any way anonymous. If you want privacy you don’t use Bitcoin.

        I guess that makes me a shill for Monero 🙄

        • dhork@lemmy.world
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          5 months ago

          Bitcoin is pseudonomynous. If you are careful it can be anonymous but that is not a guarantee.

          Monero is anonymous, as anyone who uses it will remind you about, repeatly. Monero users are the vegans of crypto.

            • prole
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              5 months ago

              I’m not sure I understand the question… Monero doesn’t need a “mixer,” that’s kind of the entire point. You swap your BTC (or literally anything, shoutout to godex.io) for XMR and poof, it’s gone.

              Unless someone gets physical access to your wallet keys, there is no way for anyone to know where that money went, where it came from, or where it will go in the future. For all intents and purposes, it’s invisible.

              • Victoria Antoinette @lemmy.world
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                5 months ago

                I seem to recall that the anonymity of car is based on obscuring transactions through bundling, but that method was deanonymized by poisoning wallrts somehow. this was like 10 years ago so my memory is fuzzy.

                • prole
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                  5 months ago

                  I seem to recall that the anonymity of car is based on obscuring transactions through bundling

                  Car? Autocorrect maybe?

                  I’m not XMR fanboy or expert, and it is some beautiful mathematics, but wayyyyyy over my head. That said, you might be referring to “ring signatures” that I guess you could say “bundles” the transactions together but that would be far too reductive, it’s way cooler and more complicated than that.

                  If I recall, there was talk of possible attack vectors, so they made it even more private. I’ll let wiki explain:

                  The transaction outputs, or notes, of users sending Monero are obfuscated through ring signatures, which groups a sender’s outputs with other decoy outputs.[14] Encryption of transaction amounts began in 2017 with the implementation of ring confidential transactions (RingCTs).[8][15] Developers also implemented a zero-knowledge proof method, “Bulletproofs”, which guarantee a transaction occurred without revealing its value.[16] Monero recipients are protected through “stealth addresses”, addresses generated by users to receive funds, but untraceable to an owner by a network observer.[8] These privacy features are enforced on the network by default.[8]

                  https://en.wikipedia.org/wiki/Monero#Privacy

                  So it looks like it was 2017 when they changed things. I know there was some discussion of switching from RingCTs to zk-SNARK (a form of “zero-knowledge proof”) which, in and of itself, is an amazing cryptographic concept. I implore you to check out the wiki on it if you have any interest in cryptography or mathematics I think it’s brilliant: https://en.wikipedia.org/wiki/Zero-knowledge_proof

                  So yeah, according to wiki, it seems as though they adopted zero-knowledge proofs… So not only ring signatures, but RingCTs (encrypted), plus ZKP, makes Monero pretty impenetrable. Which I think is cool af. As an engineer, I like seeing a typically abstract field/form of math be used in practical, real-world examples, as it doesn’t happen often.