Evidence row 275810

What was observed

{
  "count": 6,
  "tools": [
    {
      "description": "Fetch the transcript of a public YouTube video. Accepts a full URL or an 11-character video ID. Defaults to Markdown (title + text), which is the most compact format for reading or summarizing. Use json for timestamped segments, srt/vtt for subtitle files. Costs 1 credit on success; videos without captions are AI-transcribed at 1 credit per started minute.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "end_time": {
            "description": "Only return the part before this second",
            "type": "number"
          },
          "format": {
            "default": "md",
            "description": "Output format",
            "enum": [
              "json",
              "text",
              "srt",
              "vtt",
              "csv",
              "md"
            ],
            "type": "string"
          },
          "language": {
            "description": "Preferred caption language (BCP-47, e.g. en, es, pt-BR)",
            "type": "string"
          },
          "mode": {
            "default": "auto",
            "description": "auto: captions, AI-transcribed audio if there are none. captions: never AI. ai: always transcribe the audio (1 credit per started minute)",
            "enum": [
              "auto",
              "captions",
              "ai"
            ],
            "type": "string"
          },
          "original_language": {
            "description": "Prefer the spoken language's captions over English",
            "type": "boolean"
          },
          "search": {
            "description": "Only return lines containing this text",
            "type": "string"
          },
          "start_time": {
            "description": "Only return the part from this second on",
            "type": "number"
          },
          "timestamps": {
            "default": false,
            "description": "Prefix lines with timestamps (text/md)",
            "type": "boolean"
          },
          "translate_to": {
            "description": "Translate the transcript into this language",
            "type": "string"
          },
          "url": {
            "description": "YouTube URL or video ID",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "get_transcript"
    },
    {
      "description": "Show the remaining TranscriptYT credits and plan for this API key. Free.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {},
        "type": "object"
      },
      "name": "get_usage"
    },
    {
      "description": "List the caption tracks available for a YouTube video. Free, and does not use credits.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "url": {
            "description": "YouTube URL or video ID",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "list_languages"
    },
    {
      "description": "List the videos in a YouTube playlist, or a channel's uploads (newest first), with titles and durations. Accepts playlist links or IDs and channel links or @handles. Free. Use get_transcript on the videos you need.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "limit": {
            "default": 50,
            "description": "Maximum videos to return",
            "maximum": 500,
            "minimum": 1,
            "type": "integer"
          },
          "url": {
            "description": "Playlist URL/ID, or channel URL/@handle",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "list_playlist_videos"
    },
    {
      "description": "Search YouTube for videos, or search within one channel by passing its link or @handle. Returns video IDs, titles, channels, durations, and view counts. Free. Use get_transcript on the videos you need.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "channel": {
            "description": "Only search this channel (URL, channel ID, or @handle)",
            "type": "string"
          },
          "limit": {
            "default": 10,
            "description": "Maximum videos to return",
            "maximum": 100,
            "minimum": 1,
            "type": "integer"
          },
          "query": {
            "description": "Search terms",
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "search_youtube"
    },
    {
      "description": "Summary, key points, and timestamped study notes for a public YouTube video, generated from its transcript. Written in the transcript's language (translate_to changes which transcript is summarized). Costs 1 credit for the transcript plus 1 for the summary (2 total) for most videos; long videos cost about 1 more per further 45 minutes.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "language": {
            "description": "Preferred caption language (BCP-47, e.g. en, es, pt-BR)",
            "type": "string"
          },
          "translate_to": {
            "description": "Summarize a translation of the transcript into this language",
            "type": "string"
          },
          "url": {
            "description": "YouTube URL or video ID",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "summarize_video"
    }
  ]
}

What the leaf hashes

{"body":"e6424b294ba090c4ddbefb3ae85908c0c804d8a29fac667d57543d355b2f706f","id":275810,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793040851156652,"prev":null,"subject":"35009fa3-6b84-4e9d-86df-27485b7ec97a","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0x3c936d54167a3f82ee7b97456353b484b81afec875b4ad500efe6df75c117c23
2. 0x97524e946a8fbec320535c40f1f607ea0edc6df5b36b752ab40bd114d92d0434
3. 0x2a8982da6849251184e30dce780cbf7996900b8640ccdfe612e1b767383dc262
4. 0x36a66eca4b61ce5a1d3b33b313d54568e10005f4193dfc7f047364b0192daaf5
5. 0x99068eacdd44f28a31f30e3ca234a08320777b2bc9f4d87f703c89ef402273f4
6. 0xa9af03ca141d1f91a806930891029dcee48172447e1386071732948d3fc66b41
7. 0xa9c69e1a4a6ad0918dcd224143a16181cb230ef55e01dc1dae61355feb96cd61
8. 0xe98fa22ab6f2d3f2ec384f2afe609676bbf13fde0ff687b4f1f5430ec7a79ae9
9. 0xbf3afad6662f2283813602aa95c0754bc35af8c90e0347e14b7b44b397bdd35e
10. 0x210e4fd4b2b60dbd88a7f42093d3d642e105b1738155bf382034c694bee5fbcf
11. 0xd7dd18a37a5bb07e81a8083d8d1469e052ceebb2814b00f5a8d4f4cd181a5108
12. 0xd04df0f7f3be4d014b4cea8172ada286fbcf5bcb32ae1b281704fd75627b661b
13. 0x215f432600b78f2e7c9629cd10ce6ce4b7f3351b0b71f3f2c7dcb8e650f6cd63
14. 0x7f594f5609f388d64d3cda87b5631d393ee8300bb09bad71f150113a5886ee33
15. 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae