The internet's been off for three days. Your phone tracks you anyway. How do you pay someone?
The same way people always have: hand them something.
A printed ecash note works with no signal and no app, and it leaves nothing behind. Anyone can check it against the mint's public key, completely offline. The spend key stays hidden under a scratch seal until the note gets redeemed.
The catch: nobody can rule out a double spend until someone's back online, so receive notes only from a trusted issuer. That's how cash works too.
That's why I built printable notes into BitNotes. Money should still work when the network doesn't.
kennethNY / Kenneth
npub1r7…fg5d9
2026-10-24 17:20:04 UTC
Author Public Key
npub1r7w99pyt65l9rnlc43xagd3u400qtdcpdqtc5eg5twl4dj8ypqpsffg5d9Published at
2026-10-24 17:20:04 UTCEvent JSON
{
"id": "51509e0fc1ff83d1d8eb83a3b520c6ae3f2220096bac370e31f7d1331a1f0d21",
"pubkey": "1f9c52848bd53e51cff8ac4dd4363cabde05b70168178a65145bbf56c8e40803",
"created_at": 1792862404,
"kind": 1,
"tags": [
[
"r",
"wss://nos.lol/"
],
[
"r",
"wss://relay.primal.net/"
],
[
"r",
"wss://purplepag.es/"
],
[
"r",
"wss://offchain.pub/"
],
[
"r",
"wss://nostr.bitcoiner.social/"
],
[
"client",
"Primal Web"
]
],
"content": "The internet's been off for three days. Your phone tracks you anyway. How do you pay someone?\n\nThe same way people always have: hand them something.\n\nA printed ecash note works with no signal and no app, and it leaves nothing behind. Anyone can check it against the mint's public key, completely offline. The spend key stays hidden under a scratch seal until the note gets redeemed.\n\nThe catch: nobody can rule out a double spend until someone's back online, so receive notes only from a trusted issuer. That's how cash works too.\n\nThat's why I built printable notes into BitNotes. Money should still work when the network doesn't.",
"sig": "0d7fba5655801d1a00614328970813b0830cafdf537deba010cdd8c43a995e07e385eed21a0f8a4f55f8cdece70fb8f1c7013f58baec039e999b45c86a3e6e3c"
}