Unfortunately that's just false, as Bitcoin is not fungible. The history of every coin is transparent and visible, so your purchase of Bitcoin via KYC necessarily has a tie between your ID and your subsequent on-chain activity.
no-KYC bitcoin is far more useful and freedom-preserving than that purchased via KYC.
I just gave you 1 sat for this comment, using a UTXO from a KYC exchange. Please find my IP, address and my real identity and the original UTXO of this 1 sat.
Please give me a break with this bullshit crap of "non-KYC Bitcoin".
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That's not how this works lmao.
You sent me sats on a custodial wallet from a custodial wallet using Lightning.
The issues with KYC are detailed in the article, which you don't seem to have read. A receiver being able to tie your identity back to your funds is only one of many issues and risks.
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You sent me sats on a custodial wallet from a custodial wallet using Lightning.
Does it matter? No. Or you now says that sats from a custodial account are not the same sats ?
I could pay also a zap on SN from an anon wallet (external wallet) that have nothing to do with SN account.
OK, please send me an invoice of 100 sats. I will pay it from any other LN wallet. Apply the same.
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Strong example here. Let’s see what the response is!
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deleted by author
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correction: lets find him xD
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maybe we both are the same entity. are we even humans? :P
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That's a privacy problem. Not a fungibility. Fungibility is when all the units of the system are equally valuable, which is true. Every bitcoin can be traded with $68k, or its respective exchange rate in other currencies.
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What is your opinion of the silent payment proposal [1] (BIP 352)? Suppose that becomes the default/preferred method of receiving bitcoin. Can that alleviate some of the concerns around exchanges tracking where the sats flow?

  1. https://gist.github.com/RubenSomsen/c43b79517e7cb701ebf77eec6dbb46b8
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That is another story, is good but have nothing to do with "KYC vs non-KYC bitcoin". I will repeat: if will exist such thing, Bitcoin will cease to exist.
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are you saying kyc on the btc protocol level vs. kyc on a govt jurisdictional level, essentially?