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Fix linting of 47.md
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47.md
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47.md
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NIP-47
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======
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# NIP-47
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Nostr Wallet Connect
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--------------------
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## Nostr Wallet Connect
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`draft` `optional` `author:kiwiidb` `author:bumi` `author:semisol` `author:vitorpamplona`
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@ -12,12 +10,13 @@ This NIP describes a way for clients to access a remote Lightning wallet through
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## Terms
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* **client**: Nostr app on any platform that wants to pay Lightning invoices
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* **wallet service**: Nostr app that typically runs on an always-on computer (eg. in the cloud or on a Raspberry Pi).
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- **client**: Nostr app on any platform that wants to pay Lightning invoices
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- **wallet service**: Nostr app that typically runs on an always-on computer (eg. in the cloud or on a Raspberry Pi).
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## Events
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There are three event kinds:
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- `NIP-47 info event`: 13194
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- `NIP-47 request`: 23194
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- `NIP-47 response`: 23195
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The content of requests and responses is encrypted with [NIP04](https://github.com/nostr-protocol/nips/blob/master/04.md), and is a JSON-RPCish object with a semi-fixed structure:
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Request:
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```jsonc
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{
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"method": "pay_invoice", // method, string
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```
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Response:
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```jsonc
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{
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"result_type": "pay_invoice", //indicates the structure of the result field
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If the command was succesful, the `error` field must be null.
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### Error codes
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- `RATE_LIMITED`: The client is sending commands too fast. It should retry in a few seconds.
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- `NOT_IMPLEMENTED`: The command is not known or is intentionally not implemented.
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- `INSUFFICIENT_BALANCE`: The wallet does not have enough funds to cover a fee reserve or the payment amount.
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- `OTHER`: Other error.
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## Nostr Wallet Connect URI
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**client** discovers **wallet service** by scanning a QR code, handling a deeplink or pasting in a URI.
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The **wallet service** generates this connection URI with protocol `nostr+walletconnect:` and base path it's hex-encoded `pubkey` with the following query string parameters:
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@ -81,6 +84,7 @@ The **wallet service** generates this connection URI with protocol `nostr+wallet
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The **client** should then store this connection and use it when the user wants to perform actions like paying an invoice. Due to this NIP using ephemeral events, it is recommended to pick relays that do not close connections on inactivity to not drop events.
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### Example connection string
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```sh
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nostr+walletconnect:b889ff5b1513b641e2a139f661a661364979c5beee91842f8f0ef42ab558e9d4?relay=wss%3A%2F%2Frelay.damus.io&secret=71a8c14c1407c113601079c4302dab36460f0ccd0ad506f1f2dc73b5100e4f3c
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```
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Description: Requests payment of an invoice.
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Request:
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```jsonc
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{
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"method": "pay_invoice",
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```
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Response:
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```jsonc
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{
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"result_type": "pay_invoice",
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```
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Errors:
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- `PAYMENT_FAILED`: The payment failed. This may be due to a timeout, exhausting all routes, insufficient capacity or similar.
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## Example pay invoice flow
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3. **wallet service** responds to the event by sending an event with kind `23195` and content being a response either containing an error message or a preimage.
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## Using a dedicated relay
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This NIP does not specify any requirements on the type of relays used. However, if the user is using a custodial service it might make sense to use a relay that is hosted by the custodial service. The relay may then enforce authentication to prevent metadata leaks. Not depending on a 3rd party relay would also improve reliability in this case.
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