NIP-123 Epheremal bitcoin transaction broadcasting

123.md

@@ -0,0 +1,41 @@
+NIP-123
+======
+
+Bitcoin Transaction Broadcasting Events
+-------------------------
+
+`draft` `optional` `author:benthecarman`
+
+A special event with kind `28333`, that contains an encoded bitcoin transaction.
+The bitcoin transaction is encoded as a base64 string, and is contained in the `content` field.
+
+This is an ephemeral event, and is not stored on the server. So relays or other custom clients could receive these
+events, and broadcast them to the bitcoin network.
+
+For example:
+
+```json
+{
+  "kind": 28333,
+  "content": "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",
+  ...other fields
+}
+```
+
+## Uses
+
+This offers a way for users to broadcast bitcoin transactions in a private way without having to connect to the bitcoin
+network directly.
+
+Today, users have to connect to the bitcoin network directly or use an api like mempool.space to broadcast transactions.
+This is not private, as you can leak your ip address to the service or a bitcoin node.
+
+Nostr provides a better opportunity for users to broadcast transactions in a private way. Nostr relays are at most
+bitcoin adjacent and have a much lower risk of being run by a chain analysis company, thus providing a possibly better
+way to broadcast transactions.
+
+## Recommendations
+
+Clients should generate an ephemeral keypair for each transaction they want to broadcast. This keypair should only ever
+be used for broadcasting that transaction. This is to best preserve the privacy of the user and to not link any extra
+metadata to the transaction.

README.md

@@ -64,7 +64,7 @@ They exist to document what may be implemented by [Nostr](https://github.com/fia
 ## Event Kinds
 
 | kind    | description                | NIP         |
-| ------- | -------------------------- | ----------- |
+|---------| -------------------------- | ----------- |
 | `0`     | Metadata                   | [1](01.md)  |
 | `1`     | Short Text Note            | [1](01.md)  |
 | `2`     | Recommend Relay            | [1](01.md)  |
@@ -88,6 +88,7 @@ They exist to document what may be implemented by [Nostr](https://github.com/fia
 | `10002` | Relay List Metadata        | [65](65.md) |
 | `22242` | Client Authentication      | [42](42.md) |
 | `24133` | Nostr Connect              | [46](46.md) |
+| `28333` | Bitcoin Transaction        | [123](123.md)|
 | `30000` | Categorized People List    | [51](51.md) |
 | `30001` | Categorized Bookmark List  | [51](51.md) |
 | `30008` | Profile Badges             | [58](58.md) |