Evidence row 302210

What was observed

{
  "count": 4,
  "tools": [
    {
      "description": "Fetch the published editorial text, dates, primary sources and correction history of an exact day identifier returned by search or list_days.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "id": {
            "maxLength": 300,
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "id"
        ],
        "type": "object"
      },
      "name": "fetch"
    },
    {
      "description": "List days on a date or in an inclusive date range (maximum 366 days). Defaults to today in Europe/Rome. Resolves movable annual dates and excludes expired recurrences.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "authority_status": {
            "default": "all",
            "enum": [
              "all",
              "official",
              "community",
              "unreviewed"
            ],
            "type": "string"
          },
          "end_date": {
            "description": "YYYY-MM-DD; defaults to start_date.",
            "type": "string"
          },
          "limit": {
            "default": 20,
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          },
          "offset": {
            "default": 0,
            "maximum": 100000,
            "minimum": 0,
            "type": "integer"
          },
          "start_date": {
            "description": "YYYY-MM-DD; omit both dates for today.",
            "type": "string"
          },
          "topic": {
            "description": "Exact topic slug from list_topics.",
            "maxLength": 200,
            "minLength": 1,
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "list_days"
    },
    {
      "description": "List public topic names, slugs and record counts. Use a slug as the topic filter in search or list_days.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "limit": {
            "default": 20,
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          },
          "offset": {
            "default": 0,
            "maximum": 100000,
            "minimum": 0,
            "type": "integer"
          }
        },
        "type": "object"
      },
      "name": "list_topics"
    },
    {
      "description": "Search Italian world and international days by title, official title, description or topic. Returns citable records and explicit verification status. Use fetch for details.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "authority_status": {
            "default": "all",
            "enum": [
              "all",
              "official",
              "community",
              "unreviewed"
            ],
            "type": "string"
          },
          "limit": {
            "default": 20,
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          },
          "offset": {
            "default": 0,
            "maximum": 100000,
            "minimum": 0,
            "type": "integer"
          },
          "query": {
            "maxLength": 300,
            "minLength": 1,
            "type": "string"
          },
          "topic": {
            "description": "Exact topic slug from list_topics.",
            "maxLength": 200,
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "search"
    }
  ]
}

What the leaf hashes

{"body":"e4e5c87bba5da111415b54682dfa91eb3a04646f2acccdfcedb91b4bea84518f","id":302210,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793054545557777,"prev":null,"subject":"23a8db46-4d4a-4e5f-8296-6a78901ad756","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. 0x0c1f5e169faf490000bda2282b4c32547f4e0c7cc10d299c572bbb64202b945b
2. 0xfc54fb6b64477ed82f8720d06dc4c2b320293cd271a9e33c1835e2f8e00f4552
3. 0xe6522954406d33e493ac40d61de90efa9d2b34a60ea75b1e7fff894eabf1a7b0
4. 0x68b02c2802c9e5d7b161876e053b31daf10a79152425067b12b50fd409acc006
5. 0xdeb677d2afd0a562b916d9daf0706dfdd392af2c7e7fe12ba38290617ef30eb7
6. 0x193a012877bc0a09bab74947532cb24221bff5d837e232c9269eae05f981a7c2
7. 0x51b835517119340996883818507d2b41fa2e5419676a04ada75a1b08366cc25c
8. 0xa7625a099f5e01601bb163ab4a9402c8b0c28de5987b482d890635c8c265b2ab
9. 0xa445a49692c3c1c8ba44a66bbf44ce0a6a335ef3f0311738b858660e8b595702
10. 0xbe1b36b968b56faed4c267ac55542429bece302d9dc696aa907f7a42f10746ee
11. 0x8eb597b47b241899ba9947d79964713d71582858e40e13030f7b428006b500c7
12. 0x0295c7c2280f85143f6ea027ec5cab1cda783eeef5bca0accb9aea607c5aa3c2
13. 0x5aefcf9e3d86e125861c0d490079969110eea8fc901ec61531bba10bb58258a1
14. 0xa96bb9408ce00a0d40ddaba8736257dfce76d5478b131d69db1afdf8a824312b
15. 0x7ddc2fead128357f881b63e6c7c26d7fbbb84fca6c7c8e0bbfe386de86ca8d39
16. 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae