Back when the paywall feature was added to Nosmero I didn't see an NIP and missed the PR #2156 discussion. 100% agree on using a universal solution.
Currently Nosmero is: per-note one-time unlock. Kind-1 events carry an ['encrypted', ciphertext] tag (AES-256-GCM); the key is custodied by our backend and released over HTTPS after we verify an on-chain Monero tx_key against the receiving subaddress. Public preview text sits in the event body so the note still renders in other clients. Source: js/paywall.js + api/paywall.js at github.com/grahamonero/nosmero.
Regarding the PR discussion, I understand the current draft is focused on memberships with kind 1163 and defers individual pay-per-view content to future additions. I like the idea of subscriptions though; the goal of Nosmero has been to get content creators paid in XMR and subscriptions would be a great fit.
I can share Nosmero's production data on per-content unlock on the PR, what it looks like and how on-chain proof-of-payment fits. It did get me thinking about an optional ['proof', method, data] tag for portable proof-of-payment which survives the access list being GC'd. It works cleanly for XMR (txid, tx_key) and I think it would work for Lightning too (paid invoice).
Graham O'Nero
npub1xh…23s4p
2026-05-15 20:58:11 CEST
in reply to nevent1q…rdln
Author Public Key
npub1xhfclgh0klylfvdlyzjd9n0dwvd32tkcwxs24jwhydrjvhymgtvql23s4pPublished at
2026-05-15 20:58:11 CESTEvent JSON
{
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"pubkey": "35d38fa2efb7c9f4b1bf20a4d2cded731b152ed871a0aac9d72347265c9b42d8",
"created_at": 1778871491,
"kind": 1,
"tags": [
[
"e",
"8f8c6e9e38b4a74b25ed5437dc60abea15d5e509e700684caf1a11ed657f302b",
"wss://pyramid.fiatjaf.com/",
"reply"
],
[
"p",
"3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefa459d",
"wss://pyramid.fiatjaf.com/"
],
[
"client",
"nosmero"
],
[
"monero_address",
"82fygu3Su91dR4H5fsu7jBcFHMcjHdt4nDvgQtwH6Y5NNxVHTHJ4fqQL5SkzBLt4VK5BUQcirNsLRgejurb5krsP3e3W4pW"
]
],
"content": "Back when the paywall feature was added to Nosmero I didn't see an NIP and missed the PR #2156 discussion. 100% agree on using a universal solution.\n\nCurrently Nosmero is: per-note one-time unlock. Kind-1 events carry an ['encrypted', ciphertext] tag (AES-256-GCM); the key is custodied by our backend and released over HTTPS after we verify an on-chain Monero tx_key against the receiving subaddress. Public preview text sits in the event body so the note still renders in other clients. Source: js/paywall.js + api/paywall.js at github.com/grahamonero/nosmero.\n\nRegarding the PR discussion, I understand the current draft is focused on memberships with kind 1163 and defers individual pay-per-view content to future additions. I like the idea of subscriptions though; the goal of Nosmero has been to get content creators paid in XMR and subscriptions would be a great fit.\n\nI can share Nosmero's production data on per-content unlock on the PR, what it looks like and how on-chain proof-of-payment fits. It did get me thinking about an optional ['proof', method, data] tag for portable proof-of-payment which survives the access list being GC'd. It works cleanly for XMR (txid, tx_key) and I think it would work for Lightning too (paid invoice).",
"sig": "2f230e3c810c294a5f542d55a0b041805c058cbd65d4639990c9539e7b8c1de4343caec06f00cdb5fb3ae6aecc992eb1004fe28f0bbc995054bf43f08540db1d"
}