You can verify tohe history of any utxo. That's how it's done. And before calling anyone names, be open and try and understand others' perspective. I had a umiversity professor, much more knowladgeabl...
The definition of Fungible has nothing to do with governments. A government can make all holders of gold coins criminals (6102) but that does not mean gold is no longer fungible. The existence of a tiny market based on a subjective observation does not make something not fungible. 99.999% of all Bitcoin trades give no premium to KYC or non KYC. They regard KYC and non KYC UTXOs at the same value. Just like a dollar might have a small print error and be worth a lot more in a super niche collectors group doesn't mean every single person accepting dollars will know and recognize this premium value. No, they don't give a damn because it's fungible and it's an interchangable dollar and only worth a dollar to 99.999% of the network.
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