Coin control is fundamental for #bitcoin transactions privacy, but it’s annoying to have to handle the change output and keep track/label on every spend.
What if merchants accepting bitcoin could let me create a simple payment channel address that can be funded spending an arbitrary amount of coin(s) without generating a remainder, hence no change output in the transaction?
User wallet would send funds and right away sign the initial state deducted of the first spend in favor of merchant
ie.
Funding amount 0.1525 BTC
First payment 0.01 BTC
It a basically the Bitrefill account balance, but with somewhat a guarantee you can get back your “gift card” if service is not delivered to you anymore.
tiero
npub1w4…ws08a
2024-07-26 18:14:28
Author Public Key
npub1w4sf3hsedukh33akdn5duld2yc5jlk6s02shur8553j0a59sm3jscws08aPublished at
2024-07-26 18:14:28Event JSON
{
"id": "7daf4cabf8a9c33191019e83312c896cbce45f124a1f19b14aab01b2dea139de",
"pubkey": "756098de196f2d78c7b66ce8de7daa26292fdb507aa17e0cf4a464fed0b0dc65",
"created_at": 1722017668,
"kind": 1,
"tags": [
[
"t",
"bitcoin"
]
],
"content": "Coin control is fundamental for #bitcoin transactions privacy, but it’s annoying to have to handle the change output and keep track/label on every spend.\n\nWhat if merchants accepting bitcoin could let me create a simple payment channel address that can be funded spending an arbitrary amount of coin(s) without generating a remainder, hence no change output in the transaction?\n\nUser wallet would send funds and right away sign the initial state deducted of the first spend in favor of merchant \n\nie. \nFunding amount 0.1525 BTC\nFirst payment 0.01 BTC\n\nIt a basically the Bitrefill account balance, but with somewhat a guarantee you can get back your “gift card” if service is not delivered to you anymore.",
"sig": "3baffd0dd22988d1e4d74d7c3e95dffa2b6ef5320d1ae4b3c40b748b99bf79dc84de59ff5db28efcfe4ba4918e6a13ef651f9e7f414c9a8008c3ecad5bb75e86"
}