📅 Original date posted:2019-03-18
📝 Original message:Hi,
I think Payjoin can be a very good privacy solution for Bitcoin, but I have a question about it:
- If a user has 1 BTC in a single address and make a payjoin payment to other person of 0.1 BTC using that address as input, the other person can see in a blockchain explorer the change address with an amount of 0.9 BTC. That's a serious privacy leak. I would like to know what will be the standard solution to this issue. An easy fix could be that the user wallet check if any address contains a BTC amount higher than a "safe" amount like 0.01 BTC or less. If some address exceed that amount the wallet could automatically make 1 payment to itself to split the amount in several addresses. In this way nobody receiving a payment from a user will ever know that he has a bitcoin balance higher than the "safe" amount.
What do you think?
Regards,
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Kenshiro [] [ARCHIVE] /
npub1pn…9cs5z
2023-06-07 18:17:08
in reply to nevent1q…pc8f
Author Public Key
npub1pnn79vddxfx38glw3fa3cslhnw5vmfjaq80mchjaxrdwef7r5kvqz9cs5zPublished at
2023-06-07 18:17:08Event JSON
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"content": "📅 Original date posted:2019-03-18\n📝 Original message:Hi,\n\nI think Payjoin can be a very good privacy solution for Bitcoin, but I have a question about it:\n\n- If a user has 1 BTC in a single address and make a payjoin payment to other person of 0.1 BTC using that address as input, the other person can see in a blockchain explorer the change address with an amount of 0.9 BTC. That's a serious privacy leak. I would like to know what will be the standard solution to this issue. An easy fix could be that the user wallet check if any address contains a BTC amount higher than a \"safe\" amount like 0.01 BTC or less. If some address exceed that amount the wallet could automatically make 1 payment to itself to split the amount in several addresses. In this way nobody receiving a payment from a user will ever know that he has a bitcoin balance higher than the \"safe\" amount.\n\nWhat do you think?\n\nRegards,\n-------------- next part --------------\nAn HTML attachment was scrubbed...\nURL: \u003chttp://lists.linuxfoundation.org/pipermail/bitcoin-dev/attachments/20190318/e1d97bdb/attachment.html\u003e",
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