Instagram feeds

68.md

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+NIP-68
+======
+
+Picture-first feeds
+-------------------
+
+`draft` `optional`
+
+This NIP defines event kind `20` for picture-first clients. Images must be self-contained. They are hosted externally and referenced using `imeta` tags
+
+Unlike a `kind 1` event with a pircture attached, Picture events are meant to contain all additional metadata concerning the subject media and to be surfaced in picture-specific clients rather than general micro-blogging clients. The thought is for events of this kind to be referenced in a Instagram/Flickr/Snapshat/9gag like nostr client where the picture itself is at the center of the experience.
+
+## Picture Events
+
+Picture events contain a `title` tag and description in the `.content`. 
+
+They may contain multiple images to be displayed as a single post.
+
+```jsonc
+{
+  "id": <32-bytes lowercase hex-encoded SHA-256 of the the serialized event data>,
+  "pubkey": <32-bytes lowercase hex-encoded public key of the event creator>,
+  "created_at": <Unix timestamp in seconds>,
+  "kind": 20,
+  "content": "<description of post>",
+  "tags": [
+    ["title", "<short title of post>"],
+
+    // Picture Data
+    [
+      "imeta",
+      "url https://nostr.build/i/my-image.jpg",
+      "m image/jpeg",
+      "blurhash eVF$^OI:${M{o#*0-nNFxakD-?xVM}WEWB%iNKxvR-oetmo#R-aen$",
+      "dim 3024x4032",
+      "alt A scenic photo overlooking the coast of Costa Rica",
+      "x <sha256 hash as specified in NIP 94>",
+      "fallback https://nostrcheck.me/alt1.jpg",
+      "fallback https://void.cat/alt1.jpg"
+    ],
+    [
+      "imeta",
+      "url https://nostr.build/i/my-image2.jpg",
+      "m image/jpeg",
+      "blurhash eVF$^OI:${M{o#*0-nNFxakD-?xVM}WEWB%iNKxvR-oetmo#R-aen$",
+      "dim 3024x4032",
+      "alt Another scenic photo overlooking the coast of Costa Rica",
+      "x <sha256 hash as specified in NIP 94>",
+      "fallback https://nostrcheck.me/alt2.jpg",
+      "fallback https://void.cat/alt2.jpg",
+
+      "annotate-user <32-bytes hex of a pubkey>:<posX>:<posY>" // Tag users in specific locations in the picture
+    ],
+
+    ["content-warning", "<reason>"], // if NSFW
+
+    // Tagged users
+    ["p", "<32-bytes hex of a pubkey>", "<optional recommended relay URL>"],
+    ["p", "<32-bytes hex of a pubkey>", "<optional recommended relay URL>"],
+
+    // Hashtags
+    ["t", "<tag>"],
+    ["t", "<tag>"],
+  ]
+}
+```
+
+The `imeta` tag `annotate-user` places a user link in the specific position in the image.
+
+Picture events might be used with [NIP-71](71.md)'s kind `34236` to display short vertical videos in the same feed.