Evidence row 258177

What was observed

{
  "count": 3,
  "tools": [
    {
      "description": "Get one server by its exact name: its server.json manifest, its review status, and ready-to-use install snippets. Use it to check on a server you submitted; status is pending until a maintainer approves it.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "name": {
            "description": "Exact server name, e.g. io.github.acme/weather-mcp.",
            "type": "string"
          }
        },
        "required": [
          "name"
        ],
        "type": "object"
      },
      "name": "get_server"
    },
    {
      "description": "Search the registry for MCP servers. Matches names, titles, descriptions, tags and the names of the tools each server exposes. Returns short summaries; call get_server for install instructions. Search before submit_server so you don't add a duplicate.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "limit": {
            "default": 10,
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          },
          "offset": {
            "default": 0,
            "minimum": 0,
            "type": "integer"
          },
          "query": {
            "description": "Free text, e.g. \"github issues\", or a tool name such as \"get_forecast\". Omit to list everything.",
            "type": "string"
          },
          "tag": {
            "description": "Only servers with this tag, e.g. search.",
            "type": "string"
          },
          "transport": {
            "description": "Only servers with this transport.",
            "enum": [
              "stdio",
              "streamable-http",
              "sse"
            ],
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "search_servers"
    },
    {
      "description": "Add an MCP server to the registry. New submissions are reviewed by a maintainer before they appear in search; get_server shows their status meanwhile. Fill in what you know from the server's README or package metadata. If the result is an error, fix the fields it names and call again. Never include secrets: env_vars takes variable names only, not values.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "description": {
            "description": "What the server does and anything it needs to run, in one or two sentences.",
            "maxLength": 1000,
            "minLength": 10,
            "type": "string"
          },
          "env_vars": {
            "description": "Names of environment variables the server needs, e.g. WEATHER_API_KEY. Names only.",
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "license": {
            "description": "SPDX license identifier, e.g. MIT.",
            "type": "string"
          },
          "name": {
            "description": "Unique name: a reverse-DNS namespace you can vouch for, a slash, and a short name. For a GitHub project use io.github.<owner>/<repo>, e.g. io.github.acme/weather-mcp. Lowercase letters, digits, dots, hyphens and underscores.",
            "type": "string"
          },
          "package_identifier": {
            "description": "Required for stdio: the package name or image, e.g. @acme/weather-mcp or ghcr.io/acme/weather-mcp.",
            "type": "string"
          },
          "package_registry": {
            "description": "Required for stdio: where the package is published.",
            "enum": [
              "npm",
              "pypi",
              "oci",
              "nuget",
              "mcpb",
              "cargo"
            ],
            "type": "string"
          },
          "remote_url": {
            "description": "Required for streamable-http and sse: the URL clients connect to.",
            "type": "string"
          },
          "repository_url": {
            "description": "Source repository URL.",
            "type": "string"
          },
          "tags": {
            "description": "Lowercase topic tags, e.g. weather, data.",
            "items": {
              "type": "string"
            },
            "maxItems": 12,
            "type": "array"
          },
          "title": {
            "description": "Human-readable name, e.g. Weather.",
            "maxLength": 120,
            "type": "string"
          },
          "tools": {
            "description": "Names of the tools the server exposes.",
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "transport": {
            "description": "stdio for a server run locally from a package; streamable-http for a hosted server reached by URL; sse only for older hosted servers.",
            "enum": [
              "stdio",
              "streamable-http",
              "sse"
            ],
            "type": "string"
          },
          "version": {
            "description": "Current version, e.g. 1.2.0. Defaults to 0.1.0.",
            "type": "string"
          },
          "website_url": {
            "description": "Documentation or home page URL.",
            "type": "string"
          }
        },
        "required": [
          "name",
          "title",
          "description",
          "transport"
        ],
        "type": "object"
      },
      "name": "submit_server"
    }
  ]
}

What the leaf hashes

{"body":"9020ef8f2f8250bf6a96656e2a7316d609dee7889356479dac5fe002c6201b6c","id":258177,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793029979218685,"prev":null,"subject":"cc4d0129-e81e-4c2a-bddf-2e1c5ad2bc8b","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. 0xe4ce61ccaa5560d2936f70ff662e0ebdfc36a25b91a1d1bf97ff250b489e4642
2. 0x74403eeeaaa187f901df9db0274dfdad022384e4e3104d56cd39a25fbc32de74
3. 0xa57ea1153b5a0a8a2430d070aa06fd3b458202a21a40b1e2d0c5700a8840d6f0
4. 0xc0ebd69e19e48b1862016aee91ee49ffb31890e8a84b7288c8c6dbfbf6756c3f
5. 0x3498b1f31de4edabe7f2db6b7425cb6969c3829e89a5d78649728b6759e4a517
6. 0xbcaed0dcfff3917937246ceb722839142c3acbe9d8d5d24a78a329251d91662a
7. 0x9b94ab438a2c3359cd99b8eabe41f97451b1fd2a2c9fc766c97405a9effeb174
8. 0x28e0256ab89932d07dbf4ce252429fd80caa6755d9a90841cf2b1ad6ece3ea89
9. 0xf74f0470949b1ad4e69af8b6fc272a2e62927750b38e88b6d8d884b99b022b4e
10. 0x86c56520a247c0dd1499f40b00669d0f980768d7f2c1c990aed4a43e7b31c44a
11. 0x162e0da99198c9cdc9c43bf4626e85f4a7092fdb31ea15c7126e1f98b20eaa56
12. 0x2fc38b57208d692aab1ee89b6e26917df292126314027c27360c5644a63fd0bc
13. 0xc0924a0807e534382f518663123231c317124338831a2b310de2c17b09677086
14. 0x9bc5fc98278b9f6dc18c66c6e162aefd5244be03170d41bc5161f58ad11beed7
15. 0x95657a7d540ed6cac0bde9995782333b2562a9a6641853269ac95148827410f0
16. 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
17. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae