Evidence row 1534319

What was observed

{
  "count": 9,
  "tools": [
    {
      "description": "[currency] Latest exchange rates from a base currency.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "base": {
            "default": "USD",
            "description": "Base currency, e.g. USD",
            "type": "string"
          },
          "symbols": {
            "description": "Comma-separated targets, e.g. CNY,EUR (optional)",
            "type": "string"
          }
        },
        "required": [],
        "type": "object"
      },
      "name": "currency_latest"
    },
    {
      "description": "[geocode] Look up a city or place and get its coordinates, country and timezone.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "language": {
            "default": "en",
            "description": "Result language, e.g. en, zh",
            "type": "string"
          },
          "limit": {
            "default": 3,
            "maximum": 10,
            "minimum": 1,
            "type": "integer"
          },
          "name": {
            "description": "Place name, e.g. 'Shanghai'",
            "type": "string"
          }
        },
        "required": [
          "name"
        ],
        "type": "object"
      },
      "name": "geocode_search"
    },
    {
      "description": "[github] Get details of one repository.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "owner": {
            "type": "string"
          },
          "repo": {
            "type": "string"
          }
        },
        "required": [
          "owner",
          "repo"
        ],
        "type": "object"
      },
      "name": "github_repo"
    },
    {
      "description": "[github] Search repositories. Supports GitHub qualifiers like 'mcp language:rust stars:>100'.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "limit": {
            "default": 10,
            "maximum": 30,
            "minimum": 1,
            "type": "integer"
          },
          "query": {
            "type": "string"
          },
          "sort": {
            "default": "stars",
            "enum": [
              "stars",
              "updated",
              "forks"
            ],
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "github_search_repos"
    },
    {
      "description": "[hackernews] Stories currently on the Hacker News front page.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "limit": {
            "default": 10,
            "description": "Max stories (1-30)",
            "maximum": 30,
            "minimum": 1,
            "type": "integer"
          }
        },
        "required": [],
        "type": "object"
      },
      "name": "hackernews_front_page"
    },
    {
      "description": "[hackernews] Search Hacker News stories by keyword.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "limit": {
            "default": 10,
            "description": "Max results (1-30)",
            "maximum": 30,
            "minimum": 1,
            "type": "integer"
          },
          "query": {
            "description": "Keywords",
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "hackernews_search"
    },
    {
      "description": "[weather] Current conditions plus a daily forecast (max/min temperature, precipitation, weather code).",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "days": {
            "default": 3,
            "maximum": 16,
            "minimum": 1,
            "type": "integer"
          },
          "latitude": {
            "maximum": 90,
            "minimum": -90,
            "type": "number"
          },
          "longitude": {
            "maximum": 180,
            "minimum": -180,
            "type": "number"
          }
        },
        "required": [
          "latitude",
          "longitude"
        ],
        "type": "object"
      },
      "name": "weather_forecast"
    },
    {
      "description": "[wikipedia] Full-text search of Wikipedia. Returns titles, short descriptions and excerpts.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "limit": {
            "default": 5,
            "description": "Max results (1-20)",
            "maximum": 20,
            "minimum": 1,
            "type": "integer"
          },
          "query": {
            "description": "What to search for",
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "wikipedia_search"
    },
    {
      "description": "[wikipedia] Get the lead summary of a Wikipedia article by exact title.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "title": {
            "description": "Exact article title, e.g. 'Cloudflare'",
            "type": "string"
          }
        },
        "required": [
          "title"
        ],
        "type": "object"
      },
      "name": "wikipedia_summary"
    }
  ]
}

What the leaf hashes

{"body":"f2ecee9fc54bdb18befb25f4d8629d9513a642f51b2e9a2932f421dcc782f750","id":1534319,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793476612909549,"prev":null,"subject":"06dea4d5-fc76-419a-aeae-31355e889d8e","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-31 (246033 rows).

1. 0xf1c2f0db1ee4588cbcaccb5a18fc96b45d44d0fbe37a085cad062b2568219fbd
2. 0x432b9584b63e6104db0f6e6466914a1e6b96579477eb89c3443917837109938d
3. 0xcae8879ee0c3dc7413f0097c5d96dca6a21b1bb4e73a934306eee40728c0499e
4. 0x1647b5fa72cacc209256de4f5d94add59e0f0a53ebbfd03920b5cd033d2ff413
5. 0xbe729731413ecb75efc3e463f303269613290f3fd0c95eb7a2b83563e12cba91
6. 0xf57124bb0cf5b4fe3e9cdbcd3d07791217c0f7814a9215fabf2c383e56ec5aff
7. 0x2c74cd5922f2d4f49bf7a6a67745aafa9e693c1233626ab31fa605e4666bcfcd
8. 0x6d2b246e51c94b74af99d83306c7cc823e7fa05d1c5010e6aa5a00bade388e91
9. 0x1faa5ce4af63f5f54c832d8dfd2f8ca463ebaad052688b3e96ef5597a56ac8c1
10. 0xbe322028a7f9b6a2504e514bc074cfd71d6f9ecaa2010f245f61be6fd7d0ca46
11. 0xc63f042cb226ef092ea53fee5d2259a347e04c30c770aaf994362836b7fce505
12. 0xfcd782c3f252b70bc968fb5a187963c45ff14fea50222071dde8a666b3ebdbdd
13. 0xbc3e5daeb8c4525fe47bcc0da1546eab6297e135ec75acdf3bc8177600a63e27
14. 0xb9926eb0976a5b473833dada1e63c048bf8ef05dbd747135d29c85140274baf8
15. 0xe9e97d8cdaf19b6da06606a22b4eea548063df6bacb661abea4c37aa637b5c3b
16. 0x4befbbd74452b2a3a89b7e1e809ba011f1be78aeb8153059503fda47c454d086
17. 0xa1146af524f673843507e7427a575964580eef01bc0e0eae466a7920df017ab2
18. 0x0504a25438f3c7932125463198ca74c5064f23f71a5c92763b3fc96a98cc8b57

Day root

0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab

Chained

0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980

Published

On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0