Evidence row 564817

What was observed

{
  "count": 6,
  "tools": [
    {
      "description": "Return a comparison matrix for one category with common fields and buyer-relevant category fields.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "category": {
            "description": "Category id to compare.",
            "enum": [
              "identity",
              "phone",
              "email",
              "address",
              "money",
              "legal",
              "insurance"
            ],
            "type": "string"
          }
        },
        "required": [
          "category"
        ],
        "type": "object"
      },
      "name": "compare"
    },
    {
      "description": "Fetch one full Agent Papers company entry including offerings, sources, freshness, and category-specific facts.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "slug": {
            "description": "Company slug, for example agentcall.",
            "type": "string"
          }
        },
        "required": [
          "slug"
        ],
        "type": "object"
      },
      "name": "get_company"
    },
    {
      "description": "Return field names and plain-English buyer reasons for the full registry schema or one category.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "category": {
            "description": "Optional category id.",
            "enum": [
              "identity",
              "phone",
              "email",
              "address",
              "money",
              "legal",
              "insurance"
            ],
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "get_schema"
    },
    {
      "description": "Return every Agent Papers category with counts and short descriptions so an agent can choose the right comparison surface.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "list_categories"
    },
    {
      "description": "Search Agent Papers companies by name or tagline, optionally constrained by category and status. Returns compact vendor records for ranking.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "category": {
            "description": "Optional category filter.",
            "enum": [
              "identity",
              "phone",
              "email",
              "address",
              "money",
              "legal",
              "insurance"
            ],
            "type": "string"
          },
          "query": {
            "description": "Substring to match against company name and tagline.",
            "type": "string"
          },
          "status": {
            "description": "Optional company or offering status filter.",
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "search"
    },
    {
      "description": "Return changelog entries derived from registry added and updated dates, optionally filtered from a YYYY-MM-DD date.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "since": {
            "description": "Optional inclusive YYYY-MM-DD lower bound.",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "whats_new"
    }
  ]
}

What the leaf hashes

{"body":"a48579d259a62e45f91ae200d81b0cc42cc43db0678c48506841af6a905da83f","id":564817,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793137934607845,"prev":null,"subject":"679cf877-3b83-4256-aced-4df7c7231b0c","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0x3b4e2438c20861b4c0c5d70c0e4aa4887a828a1d06b1faabba80d56a92b96e4f
2. 0xc57b2f46b98c46484451eb78f9a3395c887f2932574b59cd93d84f72f5011160
3. 0x8ec29cd7ed3617173e0bba63e1d3d1a3c8d084ceff800340581daa55431d1a1a
4. 0xd43a21ed8e5a463d5600df50060c5d8c285c727fe9442ad12ebc6aa2b99a9968
5. 0x45fb9d25eeb3b0a948fc346bbef3c6166449a56d1bf52fbf3042abab7f1f441f
6. 0xd4491da4f6f11c759fa55621d8b926b30830d077491f6fd86c86a17c0ab401a9
7. 0x56b4bf02c563f58a59a8ad5d901aa7bfe18317cac0a2649a127c676e96ebfcf3
8. 0x341f34453f694953b84e5f6af8335c1cd3c4e0253c5abfbd1bc6190b4476740e
9. 0xa5fda77bd7112d1304f91babcf3aacaa7f645c1e5393d3f38763d3b67275d646
10. 0xbc6ac4c6bd6aa1b3c9383de3a25f306e36affcc8010daacc7045df5a7f341285
11. 0x34cd0060c6df900735b6aa88a647d584520104fc04a2c8d5b37d3436121b79cb
12. 0x4add9ebe2bbf86a7a32e3cec38874af82baf38b21fde64a6952bf3d4124e2c7f
13. 0x9e70d944564843a0f0d88b623d628ff2e2ac17c172d4ebe0ed141fe8b9f9dae4
14. 0x42784d9809d120654630ee1b254a1dd90a2bbd3024aa180f1a59bbf53e9316e4
15. 0x8360ee1105e4d9f9312067cbbfd47c69c5948665ae582b9684a580c8f4e199e1
16. 0x52efa60e0c3d8525486d2310eb3b6b566c9677c64fd1f819edb072cf101bcbdb
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4