“you link any UTXOs you consolidate as owned by the same person” until you normalize payjoin 🤠
Isn't payjoin obvious like reverse peelchain that merchant just accumulates payments into ever growing UTXO?
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if you only accept payjoin and always choose to contribute the same coin, sure. otherwise it’s covert
(the default Unnecessary Input Heuristic avoidant coin selection in use in BTCpay and elsewhere avoids this problem)