Evidence row 222039

What was observed

{
  "count": 3,
  "tools": [
    {
      "description": "\n    Get aggregate catalogue counts (courses, curricula, languages, knowledge components).\n\n    Returns the same shape as GET /api/v1/public/stats.\n    ",
      "inputSchema": {
        "properties": {},
        "title": "get_catalog_statsArguments",
        "type": "object"
      },
      "name": "get_catalog_stats"
    },
    {
      "description": "\n    Get the individual courses within one curriculum source.\n\n    Args:\n        slug: the curriculum source's slug, as returned by list_courses.\n\n    Returns the same shape as GET /api/v1/public/courses-detail/<slug>.\n    ",
      "inputSchema": {
        "properties": {
          "slug": {
            "title": "Slug",
            "type": "string"
          }
        },
        "required": [
          "slug"
        ],
        "title": "get_course_detailArguments",
        "type": "object"
      },
      "name": "get_course_detail"
    },
    {
      "description": "\n    List Epivo's public course catalogue, grouped by curriculum source.\n\n    Args:\n        audience: optional filter, \"k12\" or \"adult\".\n        language: optional filter, e.g. \"English\", \"Swedish\", \"Greek\", \"Arabic\"\n            (display name, matching the \"language\" field of each result).\n\n    Returns the same shape as GET /api/v1/public/courses -- no fields are\n    added or removed, since this tool applies the filters to the response of\n    that endpoint rather than deriving its own query.\n    ",
      "inputSchema": {
        "properties": {
          "audience": {
            "anyOf": [
              {
                "type": "string"
              },
              {
                "type": "null"
              }
            ],
            "default": null,
            "title": "Audience"
          },
          "language": {
            "anyOf": [
              {
                "type": "string"
              },
              {
                "type": "null"
              }
            ],
            "default": null,
            "title": "Language"
          }
        },
        "title": "list_coursesArguments",
        "type": "object"
      },
      "name": "list_courses"
    }
  ]
}

What the leaf hashes

{"body":"aa98ee172e80c960b7363853e29b0dd0cd773da6fa8b8906ccc3f16feb0e12c1","id":222039,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793027782031013,"prev":null,"subject":"ac759923-ea1f-4f26-a961-b563ef244c64","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. 0x796ceee98091ed11fbe991945a8b4f0957f62dc8ee90f2a170e8a0ea743105d1
2. 0x8d2862ff8af09e715a7bd4d8576cd2a311ca3bf418719c1f426c52a8af0f8049
3. 0x06a18104bb61d5aa8ab34a51817a0c33f0a2c724c4f7940590967143bf8118f8
4. 0xe8afad89da405ffa0c2064f9c095b3bb6b6fa6862eeada5b2814e5b48bb83428
5. 0x0f14de022392072af0fb851951fa5edc86302d55f00eed2b7b5e1945cc6e20f1
6. 0x179b79998d99eefdbcd235039c1ed9811c93c2f29caa30542fe74c6f01d68046
7. 0xfd7ca676925378e98050ff3947f27f1f5d330c046cdd355d18a1300f0ed74f3d
8. 0x7659142098103fc13ead49377c667dd781299de5cc644a50707f117f04ca52d5
9. 0x06ef2ddf7e81bc83634ebbeaf47360a61b1b13a9ec8639938f82202f83a313c6
10. 0x1aabd91bd058f7f63d4d33c5e8729922fd5f9d7ee7e3a2bbaa1ad12fa0d8bd68
11. 0x78977732f6810276b475c7ba4995e269c53c1218a49bb3951e04ede6049b4c08
12. 0xdcba35a3346e9c4b9ae1267cc5995998c2c33da9ef658e955eaae1589ebbdcad
13. 0x01c95624b1f2385ef774ee258a9ae58a4df07a1bdaa829de84e1d5201f3f39c2
14. 0x7721d38652b6444b18e1193824e50490ade04851ce6221771f6e374c4527d80f
15. 0x15039087bf60ae9b06b756ec3cbc299760e59923a438bbd91e34d105186db0ed
16. 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae