Evidence row 308495

What was observed

{
  "count": 7,
  "tools": [
    {
      "description": "Compare two file formats (by slug, extension, or filename) — extensions, category, and a verdict on when to choose each. Use for 'X vs Y' / 'difference between X and Y'.",
      "inputSchema": {
        "properties": {
          "a": {
            "type": "string"
          },
          "b": {
            "type": "string"
          }
        },
        "required": [
          "a",
          "b"
        ],
        "type": "object"
      },
      "name": "compare_formats"
    },
    {
      "description": "Find the in-browser converter (if any) that turns one format into another, e.g. from='fbx' to='glb'. Returns the tool URL and notes, all client-side (files never upload). Use for 'how do I convert X to Y'.",
      "inputSchema": {
        "properties": {
          "from": {
            "type": "string"
          },
          "to": {
            "type": "string"
          }
        },
        "required": [
          "from",
          "to"
        ],
        "type": "object"
      },
      "name": "convert_file"
    },
    {
      "description": "Profile of a frontier company: what they build, why it matters for frontier design, competitors and technologies from the knowledge graph.",
      "inputSchema": {
        "properties": {
          "slug": {
            "type": "string"
          }
        },
        "required": [
          "slug"
        ],
        "type": "object"
      },
      "name": "get_company"
    },
    {
      "description": "Get the definition and reference copy for a dictionary term, technology, sensor, or file format by slug (use `search` to find slugs).",
      "inputSchema": {
        "properties": {
          "family": {
            "enum": [
              "dictionary",
              "technology",
              "sensor",
              "format",
              "standard"
            ],
            "type": "string"
          },
          "slug": {
            "type": "string"
          }
        },
        "required": [
          "family",
          "slug"
        ],
        "type": "object"
      },
      "name": "get_definition"
    },
    {
      "description": "Identify a file format from an extension, filename, or slug (e.g. 'step', 'scan.mcap', 'gltf') and get how to open or convert it: what it stores, its extensions/MIME/spec, whether a free in-browser viewer exists, and available client-side conversions. Use for 'what is this file' / 'how do I open X'.",
      "inputSchema": {
        "properties": {
          "file": {
            "description": "An extension, filename, or format slug",
            "type": "string"
          }
        },
        "required": [
          "file"
        ],
        "type": "object"
      },
      "name": "identify_format"
    },
    {
      "description": "Latest design/UX/HMI roles at frontier companies (defense, robotics, space, industrial, health), refreshed from company job boards.",
      "inputSchema": {
        "properties": {
          "industry": {
            "description": "Industry slug (e.g. defense, robotics) — omit for all",
            "type": "string"
          },
          "limit": {
            "type": "number"
          }
        },
        "type": "object"
      },
      "name": "list_design_jobs"
    },
    {
      "description": "Full-text search across Falcon's frontier design reference: terms, technologies, file formats, sensors, companies, tools, standards.",
      "inputSchema": {
        "properties": {
          "query": {
            "description": "Search query",
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "search"
    }
  ]
}

What the leaf hashes

{"body":"346c442bb11062cf2fabe8e877534fd1516233a49fcd8df6baecc64f87a1357b","id":308495,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793058299875835,"prev":null,"subject":"eeafa7ef-aa6e-4a66-af08-54f45a4cdafd","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. 0x180da3f63f9626e653cc16087c38236845db079349bcf77114c760f1f0556746
2. 0xd71a2eb06bf769649cf77fb1278e606cb813b063b407adf1542dbd1a13efd861
3. 0x0610a8b486b86deac0ee2f66da7f979f19271aba73498b284247026c3e9279cb
4. 0x19760cee1dfbda42cc03b2a2d1bb0737b34dfe93ab2dae0d6f70ae98ccf0ac75
5. 0x66bd2f45972d4d25973a72217cb0516edeeb0bcec4333b4aede0a947ca60395c
6. 0x61b0a28e4f667372fb7b35cb93ba1e9e72dbc47bd28d353931a69dec63652e41
7. 0xaf690e4ab87b9723eefb1779166539ea51bed52a4fc07ba09de12670221b40d6
8. 0x222ed81acfef3be7a24fada941aab31f6c4d79baa55689cf2131042104b0b5f2
9. 0x42312b813f18d43d97d17d292c3cecc6f29ac87fb3e02fb04b0f55bc92477553
10. 0x0fcb0ae13db11f174ecb290ebcb27cf7f0e5aba2eac750fab3d7ca602ae20148
11. 0x84d28434d4d3c4d17b89916035448fc07d9ad132609b14e307edbe020e19d1a6
12. 0x15eab8feed5b3f08165d63b9f1aed508c0624966a05349e051f86f0c188707b5
13. 0x32f46c5f73ecbfd4f770f7f760a79bee2afed4b3e7572fa882b3e7dce8df4356
14. 0x770e4376196188c7fc9ec40f8e218dc0d1cb92bba5fe0425a0edce27ca9a997f
15. 0x60582ab4b41e72eb70eb0bce07fbf0fb4d2b62a8bad5be50f5d16d511adc746c
16. 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae