diff --git a/buds/10.md b/buds/10.md index f1c6779..ebd9bf0 100644 --- a/buds/10.md +++ b/buds/10.md @@ -18,34 +18,42 @@ Clients MUST create a merkle tree using the chunk hashes as the leaf nodes Clients should publish a `2001` kind event after chunking the file in order to store the list of chunks -The events `content` MUST be set to am ordered JSON array of the chunks sha256 hashes. e.g. +The events `content` MUST be a new-line delimitated list of sha256 hashes -```json -[ - "7e668b56a58c7891e0cf263ea3f093b75eebade23d663a45aa9920f347b3d671", // A - "9b9c44a91396f19fd8700986eb0586dff2dcccf96c75bc2caefef302bcd78da1", // B - "7a281548f1223664b855b10b08e59e84389ccabeb742517f6cd75eda2724a798", // C - "fadeccee86b123088bbc452df10e8fbc99d4c2f22a70ef7a35605ec8e439c345", // D - "5d62398419e6d136771541f3d2215e0ce31b1be45e99dbc64b43a4b734b447ca" // E -] +```txt +7e668b56a58c7891e0cf263ea3f093b75eebade23d663a45aa9920f347b3d671 +9b9c44a91396f19fd8700986eb0586dff2dcccf96c75bc2caefef302bcd78da1 +7a281548f1223664b855b10b08e59e84389ccabeb742517f6cd75eda2724a798 +fadeccee86b123088bbc452df10e8fbc99d4c2f22a70ef7a35605ec8e439c345 +5d62398419e6d136771541f3d2215e0ce31b1be45e99dbc64b43a4b734b447ca ``` -The event MUST have an `x` tag with the value of the unsorted sha256 [Merkle root](https://en.wikipedia.org/wiki/Merkle_tree) +The event MUST have an `x` tag with the sha256 hash of the ordered concatenated hashes of each chunk -Example merkle tree: +Example using `xxd` and `sha256sum`: +```bash +#!/bin/bash +hashes=( + "7e668b56a58c7891e0cf263ea3f093b75eebade23d663a45aa9920f347b3d671" + "9b9c44a91396f19fd8700986eb0586dff2dcccf96c75bc2caefef302bcd78da1" + "7a281548f1223664b855b10b08e59e84389ccabeb742517f6cd75eda2724a798" + "fadeccee86b123088bbc452df10e8fbc99d4c2f22a70ef7a35605ec8e439c345" + "5d62398419e6d136771541f3d2215e0ce31b1be45e99dbc64b43a4b734b447ca" +) -```mermaid -graph TD - Root["Root (ABCDE)"] --> ABCD - Root --> E +concatenated="" +for hex in "${hex_array[@]}"; do + concatenated="${concatenated}${hex}" +done - ABCD --> AB - ABCD --> CD +echo "Chunks:" +printf '%s\n' "${hex_array[@]}" - AB --> A - AB --> B - CD --> C - CD --> D +echo -e "\nConcatenated:" +echo "$concatenated" + +echo -e "\nRoot hash:" +echo "$concatenated" | xxd -r -p | sha256sum ``` ### Metadata @@ -55,7 +63,7 @@ The `2001` event MAY include additional metadata tags to help other clients know Metadata tags: - `name` Filename - `summary` A short summary of the file - - `m` Mime type of file + - `mime` Mime type of file - `size` Total size in bytes of the file - `server` (multiple) Recommended servers to download chunks from @@ -64,19 +72,19 @@ Metadata tags: Example `2001` event ```json { - "id": "9d0a95a2d2681a758ca4023256e62ff71494d8346b62f11601029b1f74b3b933", - "pubkey": "84ac0424fa2dec0ffd6a1f256afd1d18304cc127081f2c81da499fe4b875f1d6", + "id": "13dfd656bedaca1f5fbb5da3b585d9c13061aa6aee136a0dc7d534f4d2540941", + "pubkey": "939e77d64e8eb5c240f60bf29f80a619d6057e70fcf5d25755da012fe1b9502e", "created_at": 1731405194, "kind": 2001, - "content": "[\"7e668b56a58c7891e0cf263ea3f093b75eebade23d663a45aa9920f347b3d671\",\"9b9c44a91396f19fd8700986eb0586dff2dcccf96c75bc2caefef302bcd78da1\",\"7a281548f1223664b855b10b08e59e84389ccabeb742517f6cd75eda2724a798\",\"fadeccee86b123088bbc452df10e8fbc99d4c2f22a70ef7a35605ec8e439c345\",\"5d62398419e6d136771541f3d2215e0ce31b1be45e99dbc64b43a4b734b447ca\"]", + "content": "7e668b56a58c7891e0cf263ea3f093b75eebade23d663a45aa9920f347b3d671\n9b9c44a91396f19fd8700986eb0586dff2dcccf96c75bc2caefef302bcd78da1\n7a281548f1223664b855b10b08e59e84389ccabeb742517f6cd75eda2724a798\nfadeccee86b123088bbc452df10e8fbc99d4c2f22a70ef7a35605ec8e439c345\n5d62398419e6d136771541f3d2215e0ce31b1be45e99dbc64b43a4b734b447ca", "tags": [ - [ "x", "ebb6b0c58ad555db23c9a34e449ea8d37cfc9644cc0982f0facea11d1c3dfab0" ], + [ "x", "2d839865ac17d8bb10168490a88107637619f79dac21275fcec1705162581f39" ], [ "name", "example.mp4" ], - [ "m", "video/mp4" ], + [ "mime", "video/mp4" ], [ "size", "4823449" ], [ "server", "https://cdn.example.com" ], [ "server", "https://nostr.download" ] ], - "sig": "f930eceb7dd8f5bfe9c238e7ec124b6ca34fc335688be1aaa1cb41c33f722c86e23a527aadbed266767d5b6224451bddeac9cf9b43ac7c068c8388cbdbcbd189" + "sig": "949b52a12fcd788eb416069b231e106eeb36b4987052c29904b547cabf5a52ebb42acfbce1ae61139042064b6950e69e322c5edbe77603ac2241a4d0e953ddd4" } ```