Evidence row 2620124

What was observed

{
  "count": 5,
  "tools": [
    {
      "description": "One artwork by its Artnap id: title, artist, year, museum, license, the 2,500 px image, its Artnap page and the holding museum's own record.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "id": {
            "description": "Artnap artwork id, for example \"aic-56905\".",
            "type": "string"
          }
        },
        "required": [
          "id"
        ],
        "type": "object"
      },
      "name": "get_artwork"
    },
    {
      "description": "The license line for one artwork (public domain, CC0 or CC BY) and where to check it at the holding museum.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "id": {
            "description": "Artnap artwork id.",
            "type": "string"
          }
        },
        "required": [
          "id"
        ],
        "type": "object"
      },
      "name": "get_license_summary"
    },
    {
      "description": "Artists in the Artnap archive whose name matches the words given, with dates, number of works and their Artnap page.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "limit": {
            "default": 20,
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          },
          "q": {
            "description": "Part of the artist name, for example \"monet\" or \"utagawa\".",
            "type": "string"
          }
        },
        "required": [
          "q"
        ],
        "type": "object"
      },
      "name": "list_artists"
    },
    {
      "description": "The museums and libraries whose open access collections Artnap brings together, with the number of works from each and their Artnap page.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "list_museums"
    },
    {
      "description": "Search the Artnap archive of public domain paintings, drawings, prints and posters from museum open access collections. Returns each work with title, artist, year, museum, license, a 2,500 px image address and its Artnap page.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "artist": {
            "description": "Artist name, exactly as Artnap lists it (see list_artists).",
            "type": "string"
          },
          "color": {
            "description": "Main color of the work.",
            "enum": [
              "red",
              "orange",
              "yellow",
              "green",
              "teal",
              "blue",
              "purple",
              "pink",
              "brown",
              "black",
              "white",
              "gray"
            ],
            "type": "string"
          },
          "limit": {
            "default": 10,
            "description": "How many works to return (1-20).",
            "maximum": 20,
            "minimum": 1,
            "type": "integer"
          },
          "museum": {
            "description": "Museum name or code (see list_museums).",
            "type": "string"
          },
          "q": {
            "description": "Words to search for: subject, title, style or artist (for example \"moonlight sea\" or \"Hokusai wave\").",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "search_artworks"
    }
  ]
}

What the leaf hashes

{"body":"d5204432944a22c4412efb534facd8932d056c218f4983d46d367b19b18a46cb","id":2620124,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793728513141635,"prev":null,"subject":"eda8fc97-830f-4190-9f64-8ec5a8aeb3cc","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-03 (425475 rows).

1. 0xedea9d470dd18fa68e2dddab3c89733a702d781f8f51db16b67dae75ec91e6a3
2. 0x3fa4770b5fa4da7c385184bc195076d2057bcd61fcf51eb2aa76c13ae2cd7aa7
3. 0x26df059ebc03c3ad2bd883af826334b97719a10ddb47aed1faf84247a9d657c9
4. 0xd6c4753926971a0ffe4d0863273659457ed5f0a08499264052f7f354288fb7d7
5. 0x590040744c546c2835290d49eb1abc24157696856b98ee7cc72e48dd8b4fabdf
6. 0x6062055d4da6b2da65ebfb533fe1277ae421ddc9d014460e33afc222d8fdd5b7
7. 0xe8c6e74e2c621385b5d80280fcbac6d2bb737ac3894974d6090cddaaa611aa95
8. 0x7422b68788d825cb5f59fcbf7f3a3a6a9d57e7b8b61adb9cf8824a75b4de0f80
9. 0xf0e8b04a1c7154d85c949891122c7e004f9355bdc968e856857db4e0f3efe078
10. 0x896b77f238721aee24bae00234f945f0ac615e0cc18d4be7360388282eb722a7
11. 0xf352fa949e1b38bc13475a30c80cc10fbd46f501c51567ca6b43258d76fa17a2
12. 0x40503628e813f8ddcdce5088c1edce887d490d34ddbacedf2b89aae0441113e6
13. 0x01e9de68aa9b43892927b1c264f77e0ac05047278992dbb0b29801b5ee9c6fd2
14. 0x2548979bbd7b1568b5a14db6fca0201979c48165192f2b55f45fa21471031e4f
15. 0xa29933ab8020ad948edbcf3e65194e73a6b113a0063231c1105b56c2d59ab97d
16. 0xd60b16e6a71fbffc93a233ee89f916e50c0206a56f52c852b85e5a246b6b417c
17. 0x85f3a27c16056a361d9ba33355a575ca7123f86de901b204c88953c4b8ea441a

Day root

0xb646ffa569e24bf8336b0a15a9d98d0a2f1239f58e10c2b18a9d22e43343566a

Chained

0x35e926359fd19031c6b5e08fb3b44f2524386a57c8fdd353336c185603f53d43

Published

On Arc Testnet, block 70601990: 0xa5f9dadba13cde129126b950e64b815e6833cb8ff53b75026c9dbe769c3768c7