Quote from: BitcoinGirl.Club on August 20, 2022, 06:41:38 PM

Quote from: Deonnn on August 20, 2022, 02:43:23 PM

Proof of Payment:
https://www.blockchain.com/btc/tx/5bf44f3b65573b3c8e975eb0f68e991a77621e037ff4492856e4c126d5c27222

Can you sign one of the input address of the tx? This will prove that the coin were sent from your wallet.

See, these "proof of payments" are fucked. Nowadays people are not even using signed messages anymore, but blockchain transactions which could be theirs or could belong to some random person. Thus a person could commit fraud by producing an arbitrary transaction on a block explorer as a "proof of payment".

This "proof of payment" is only valid between buyer and seller, and meaningless to everyone else. There is no way (currently) to prove that you actually sent Bitcoins somewhere.