Evidence row 305706

What was observed

{
  "count": 3,
  "tools": [
    {
      "description": "Explain how to compare candidate appraisers for a formal appraisal need without treating FAIR as a certifier. Use this when the user needs routing guidance before or after a directory search.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "intended_use": {
            "description": "Formal-use context such as estate, insurance, donation, IRS, court, lending, or tax.",
            "maxLength": 80,
            "minLength": 2,
            "type": "string"
          },
          "location": {
            "description": "User location or service area.",
            "maxLength": 200,
            "minLength": 2,
            "type": "string"
          },
          "object_type": {
            "description": "Object/category needing appraisal, such as painting, jewelry, antique furniture, or collectibles.",
            "maxLength": 120,
            "minLength": 2,
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "explain_appraiser_routing"
    },
    {
      "description": "Fetch one public FAIR appraiser registry profile by member id. Returns public source/status/fee-model fields only and includes the correction path. FAIR surfaces candidate appraiser profiles. FAIR does not license appraisers, certify competence, certify reports, guarantee acceptance, or replace professional judgment.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "id": {
            "description": "FAIR directory member id.",
            "maxLength": 200,
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "id"
        ],
        "type": "object"
      },
      "name": "get_appraiser_profile"
    },
    {
      "description": "Search public FAIR appraiser registry profiles by location, ZIP, state, specialty, intended use, and radius. Use this when a user asks for local art, antique, jewelry, collectibles, estate, insurance, donation, court, lending, or personal-property appraiser candidates. FAIR surfaces candidate appraiser profiles. FAIR does not license appraisers, certify competence, certify reports, guarantee acceptance, or replace professional judgment.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "intended_use": {
            "description": "Formal-use context such as estate, insurance, donation, IRS, court, lending, or tax.",
            "maxLength": 80,
            "minLength": 2,
            "type": "string"
          },
          "limit": {
            "description": "Maximum number of profiles to return.",
            "maximum": 25,
            "minimum": 1,
            "type": "integer"
          },
          "location": {
            "description": "City/state or place name, such as Des Moines, IA.",
            "maxLength": 200,
            "minLength": 2,
            "type": "string"
          },
          "q": {
            "description": "Optional text query across public profile fields.",
            "maxLength": 160,
            "minLength": 2,
            "type": "string"
          },
          "radius_miles": {
            "description": "Radius in miles when a location or ZIP is supplied.",
            "maximum": 250,
            "minimum": 1,
            "type": "number"
          },
          "specialty": {
            "description": "Specialty or category, such as fine art, jewelry, antiques, estate, or insurance.",
            "maxLength": 120,
            "minLength": 2,
            "type": "string"
          },
          "state": {
            "description": "Optional two-letter US state code.",
            "maxLength": 2,
            "minLength": 2,
            "type": "string"
          },
          "zip": {
            "description": "US ZIP code for radius search.",
            "maxLength": 16,
            "minLength": 5,
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "search_appraisers"
    }
  ]
}

What the leaf hashes

{"body":"afab1982ff0de2df27c89a59c1a52aed200a285f9ab9da16e27e1e14c9ce1846","id":305706,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793056599441326,"prev":null,"subject":"f791b771-df7b-4146-a588-f6a026e4217c","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. 0x9da8d28a83f4c893c36c18903126814049886dd754f5e6afaae9c6a966ab03b1
2. 0x70b16902a9d60a5f68fe013209860569e77ca060b332ec2ecf03d69c0f351e73
3. 0x4c974f480f29abf4beea5faf046e0e5097b8036090c589e392ce6525295efa88
4. 0x8ff522e17e04ecbdab6dcdef18e3d3a3d90242374067838047e441b3510eb68f
5. 0x7c093451cf5c1a56aaf557e1a6cf1c2e8f602ea90dc869f6843bd170e068fe18
6. 0x2223b389de553f99c425d9b57a35384166165809606293a11956f9b53c03721d
7. 0x7640ae2470af793d7dd2f65a698c5bb4912a93ad230b473985c1a30637d00421
8. 0xc31c1537e1598f680bcef414295f5d6e3ff8989a112b84cc6e9a9378f897d7e3
9. 0x5d9b9a4006503e0ea09b7ad26c760320bf18cae1fc37c6a370903a9305842bab
10. 0xdbcb6bb00700465648e25b93c41af8658c581916f65193d2b15aedd3a021f631
11. 0x351390dbbaa59bf254610c44de6ad39906ad2c226e8f737f7d774c0b9d382abf
12. 0x73cca5e5ba14c0aaa799d5324b89eb846e3c5546aab3b2cda0c05c5eeaa03168
13. 0x99a4e0f8b23989f58b564c1b6e419578b4388f6e0dbf6e50177c1bd476302d0e
14. 0x6713795704ddd9c528d421fadd9cc96b0200a4ddbba84f88e718d4968dde888b
15. 0x62a900133713919f4eed33d8336876b7a6d538233b8a4f3ed03b29aa44f5bad0
16. 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae