New California law limits cash to crypto at ATM machines at $1000 per day per person and also the fees that can be imposed by the machines.

The industry says this will hurt the business, hinting that they’re profiting from the lack of KYC policies

I don’t see any legitimate use from those machines. Who would have a legit need to exchange $15k from cash to crypto at 33% fees???

  • Can the block chain of the system be viewed by anyone? Is the wallet ID listed on the blocks?

    It doesn’t matter how many fancy protocols are thrown up. If the history of the block chain is viewable and verifiable, then the history of transactions can be tracked to a wallet. Thus it is not truly anonymous.

    •  jet   ( @jet@hackertalks.com ) 
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      8 months ago

      Yes, no.

      The IRS currently has a $600,000 Bounty for anyone who can deanonymize monero transactions.

      That money is yours, just show us the way.

      The wiki explains it better than I ever could, even have animations wiki

      The transaction outputs, or notes, of users sending Monero are obfuscated through ring signatures, which groups a sender’s outputs with other decoy outputs.[12] Encryption of transaction amounts began in 2017 with the implementation of ring confidential transactions (RingCTs).[6][13] Developers also implemented a zero-knowledge proof method, “Bulletproofs”, which guarantee a transaction occurred without revealing its value.[14]

        •  jet   ( @jet@hackertalks.com ) 
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          8 months ago

          Yes to your first question no to your second.

          The ledger is open in public and verifiable.

          The wallet IDs involved in transactions are not including the transaction amounts. I’ll reference you to the wiki.

          I’m not a mathematician, I’m not a cryptographer, so I cannot defend the mathematics with you. I referenced the bounty to indicate that the problem has not been solved. I referenced the Wikipedia for more details. If you want to ask them specific questions about the protocol, you can join the matrix conversation, or even the Reddit community is pretty active.

            •  jet   ( @jet@hackertalks.com ) 
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              38 months ago

              Verifying a transaction exists, and verifying that the transaction occurred is not the same as making the destination address, and the amount public.

              This goes into the crypto note bulletproof proofs. Kind of like homomorphic encryption, I don’t have to trust a third party to do cryptographic operations, as long as they don’t have the key they can do the cryptographic operations and I can trust the outputs.

              • All it takes is one transaction on a wallet to be concretely connected to you and then every pervious transaction is clearly linked back to you. And that link does not have to be digital, it can be as simple as you being found in person with an item purchase through the system.

                The strength of the encryption and cleverness of the protocols with in the system are irrelevant if there is a public list of transactions.

                •  jet   ( @jet@hackertalks.com ) 
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                  8 months ago

                  In your scenario that’s not true. If you reveal yourself in the transaction. That reveals that transaction.

                  But using just that data in the public ledger, does not reveal your transaction history

                  This is due to the crypto note architecture, and their use of bulletproofs. Every transaction is verifiable, but the outputs and inputs of that transaction are not.

                  That being said, if you give up The wallet private read key, then somebody could use that Read key and go through the public ledger and find your transactions. But that’s not publicly available, that private read key is yours, you don’t give that up. Even if you accidentally tell people this transaction is yours

                  •  megopie   ( @megopie@beehaw.org ) 
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                    8 months ago

                    The way the value of a wallet is calculated is by the sum of previous transactions. For a transaction to be verified, previous transactions must be summed to show a positive balance larger than the payment. That means all previous transactions made by that wallet are publicly available and linkable.

                    If they were not, then there would be no way to verify that your wallet had enough value to make a transaction.

                    If all transactions are linkable to a wallet, than one real world link can be used to link all previous transactions.

                    Ergo, not anonymous.