Evidence row 564350

What was observed

{
  "count": 4,
  "tools": [
    {
      "description": "Get transcripts for a YouTube channel's most recent videos (newest first) as timestamped markdown, one section per video. Use for research across a creator's recent output; for one known video use get_transcript. Read-only; requires an API key. Charges 1 credit per video that returns a transcript, including repeat calls; videos without captions are skipped free. A 10-video call typically costs up to 10 credits, so start with a small limit. Rate limit: 5 requests per 10 seconds.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "limit": {
            "default": 10,
            "description": "Number of most-recent videos to fetch, 1-50 (default 10). Upper bound on the credit charge for this call.",
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          },
          "url": {
            "description": "YouTube channel URL or handle (e.g. https://www.youtube.com/@lexfridman or @lexfridman)",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "get_channel_transcripts"
    },
    {
      "description": "Get transcripts for the videos in a YouTube playlist (in playlist order) as timestamped markdown, one section per video. Use for working through a course, series, or curated list; for one known video use get_transcript. Read-only; requires an API key. Charges 1 credit per video that returns a transcript, including repeat calls; videos without captions are skipped free. A 10-video call typically costs up to 10 credits, so start with a small limit. Rate limit: 5 requests per 10 seconds.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "limit": {
            "default": 10,
            "description": "Number of videos to fetch from the start of the playlist, 1-50 (default 10). Upper bound on the credit charge for this call.",
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          },
          "url": {
            "description": "YouTube playlist URL (e.g. https://www.youtube.com/playlist?list=PLxxxxxx)",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "get_playlist_transcripts"
    },
    {
      "description": "Get the full transcript of a single YouTube video as timestamped markdown. Read-only: fetches existing captions, modifies nothing. Requires an API key; each successful call charges 1 credit, including repeat calls for the same video, so reuse a transcript already in context instead of re-fetching. Videos without captions return an error and cost nothing. Rate limit: 5 requests per 10 seconds.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "video": {
            "description": "YouTube video ID (e.g. dQw4w9WgXcQ) or full video URL (youtube.com/watch?v=... or youtu.be/... forms)",
            "type": "string"
          }
        },
        "required": [
          "video"
        ],
        "type": "object"
      },
      "name": "get_transcript"
    },
    {
      "description": "Get a cleaned-up transcript of a YouTube video's auto-generated captions: punctuation and capitalisation restored, filler and false starts removed, paragraphs added, misheard names fixed, faithful to what was said. Use when raw captions are too messy to read or quote; for a plain transcript use get_transcript. Read-only; requires an API key. Each call charges credits by transcript length (about 3 per 1,000 words, minimum 5), including repeat calls, so keep the result in context. Human-uploaded captions (already clean) and transcripts over ~7,000 words return an error without charging. Rate limit: 5 requests per 10 seconds.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "video": {
            "description": "YouTube video ID (e.g. dQw4w9WgXcQ) or full video URL (youtube.com/watch?v=... or youtu.be/... forms)",
            "type": "string"
          }
        },
        "required": [
          "video"
        ],
        "type": "object"
      },
      "name": "polish_transcript"
    }
  ]
}

What the leaf hashes

{"body":"e23d0a205237d56eb6e0e4348c6bc0213354609a5ea9ab791625149ae4abb5a4","id":564350,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793137815881517,"prev":null,"subject":"2407c57a-6d2f-494c-8179-0629da61862b","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0x9987e83d8c8b3a07592e798515894eb754fb90cb7e9ec43843266e5818ee85d0
2. 0xb436b2b7e05f3703c0ea0a028c949b19e6e738a65c5749972d486e31d5122180
3. 0x07cea57ced106436dcc13f42b74ff74e3026c446409e2d89412aa6e01cb5a191
4. 0xc19e376da8e8cb8e7750ba50fd7458595c71dc2a7b95389543ca4766eef65666
5. 0xa82348b47ec194b5e81fa4a913d993a5ec95f0b9854617dd8391306f0e72c859
6. 0x3d78cf39fcc47b3e7cf777ce834d514ee78ea646ee3ae096acd47242b3c673a9
7. 0xfd9abb555e4cc5c45ad2c5ac6b5232ae13cc729c959901d9b373c1c120abbbbb
8. 0x31990f452f84ce5ac80c0c4b5bd7ce0e1c942719ba4a5b21f0fab14e4c692f69
9. 0x9cade93a7ab2831dea86ef0e9488e38c1e9ebc6a94019a7e2e4ed1342eade8b1
10. 0xfafd7acbbf81c514ccd69cca332a22472485a9a7b44a7be505ade4139587597a
11. 0xa41abe253efa912fb9578616717d0a43d778c1509c3109fa4cfcc00433d8500d
12. 0xff66a3c0db6d61623a5ee399a8625355b32e95a4eb77e6d9f9ca4ae4dcbc5937
13. 0xfe6d2e9a468b7e99de9162a2ef30ac0b0e3b318387b4356bf524493aa67b295b
14. 0xa3c9c760ee424c178bab782711c2b9d3e15a80a6fde99165972cb75b306bb8b4
15. 0xb4f7223140c8a36cb87a63d77cf617086d9968dc4658f03e102571ebe06e9ed6
16. 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4