Evidence row 1486896

What was observed

{
  "count": 4,
  "tools": [
    {
      "description": "Evaluate a proposition under Decision Integrity Protocol and receive an Ed25519-signed Standing determination. Calling without payment returns the exact 1 USDC Base payment challenge. Pass payment_signature to settle and receive the signed determination.",
      "inputSchema": {
        "properties": {
          "api_key": {
            "description": "Optional WHP subscription API key (Developer, Team, or Institutional tier) bypassing x402 challenge.",
            "type": "string"
          },
          "claim": {
            "description": "The claim or proposition to evaluate (also accepts aliases: text, prompt, content).",
            "type": "string"
          },
          "idempotency_key": {
            "description": "Optional idempotency key for safe execution recovery.",
            "type": "string"
          },
          "payment_signature": {
            "description": "Base64 or JSON x402 v2 payment authorization for 1 USDC on Base (network eip155:8453 to 0x1050eddd8282623b0c263ed6bdbd42370bbc28d3).",
            "type": "string"
          },
          "provenance": {
            "description": "Optional provenance graph or supporting evidence.",
            "type": "object"
          },
          "subject": {
            "description": "Optional subject/context of the proposition (defaults to claim summary).",
            "type": "string"
          }
        },
        "required": [
          "claim"
        ],
        "type": "object"
      },
      "name": "whp_evaluate"
    },
    {
      "description": "Discover WHP Standing: Machine-verifiable standing under explicit authority and bounds. Includes exact profile, schema, authority prerequisites and owner-authorized payment contract.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "required": [],
        "type": "object"
      },
      "name": "whp_standing_contract"
    },
    {
      "description": "Request a WHP Standing Evaluation. First call returns the exact HTTP 402 payment terms. Supply only the buyer’s own pre-authorized payment signature on retry. Paying does not establish standing; a failed assessment has no Mark.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "client_proof": {
            "maxLength": 6000,
            "type": "string"
          },
          "payment_signature": {
            "maxLength": 24000,
            "type": "string"
          },
          "submission_raw": {
            "maxLength": 262144,
            "type": "string"
          }
        },
        "required": [
          "submission_raw"
        ],
        "type": "object"
      },
      "name": "whp_standing_evaluation"
    },
    {
      "description": "Retrieve the exact original WHP Standing Mark or negative assessment bytes with buyer authentication, without another charge.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "client_proof": {
            "maxLength": 6000,
            "type": "string"
          },
          "purchase_id": {
            "pattern": "^[0-9a-f]{64}$",
            "type": "string"
          }
        },
        "required": [
          "purchase_id",
          "client_proof"
        ],
        "type": "object"
      },
      "name": "whp_standing_result"
    }
  ]
}

What the leaf hashes

{"body":"2487b48796333ceb5932ddd024d82f68ec08776b7d0961ab9bae6ff637b882f3","id":1486896,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793451975739365,"prev":null,"subject":"7fc24e24-f5d7-4847-8e73-981690e358cd","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. 0x7798f39bce3a0b48d4303b2caab5ff6753ad9a2eefea6665ab85d5ca889032aa
2. 0x88ed53ab8d947f2862bda9d6f44e878af4539c0dc2476b69180eedda752ff6b0
3. 0x00e91ddf245418887d568323ff180e82704b6c5265d77a44e2e068c6f5858681
4. 0xc1a70df5523bc7532d2e4c43717716b894dacef9e9fb4023a34fa56acfbae71f
5. 0x4af07a76f28874f02c677ed8b176d1847341003af4e0c8bb82421be1ae330f34
6. 0x1265b0a0b1f1be14a7a8d49c704798c40851fd446890cb350d55f5ea63bce471
7. 0x17cee94480e8026599bef8fbbd1702606c7f359aabd93a2a9b53f2ad823a6239
8. 0x9db2630a35bc24e57d1b6002c2729c5676c5d925a0ecb3a1ba82f7ea96bfb14a
9. 0xc53c5a19181b4079e6a41098a05895c9404c3623a9d2e11783da2be3a20be6fe
10. 0xf9badb7a9fc56309b08eef5eacd4b730ed68f3646f736ca48dc90c1f5244e5a7
11. 0xc7b317102e570f9e167ab0927fff4600efbea91282466df606bd11c2310bdce4
12. 0xdce8198ec93efeea8647a4278dadc5fa16a35c44ec594bf12005129a91453def
13. 0x6f342b409fb218fea5a9ebd88615e8d17e77e4fdcc8d4dada1317b6321231eab
14. 0x84193793d818f53b9c5052b74eabfcc53522dfa943c3bf7c8bd476913e085e52
15. 0xb553c856ad5fb96dd995dd0c40f65a2d8efc7b7f254a1ac0f2c104350e544985
16. 0x919f237dec4df392868ab95f1d4300b185479ae64464cbc2e7385ad1fd6ab390
17. 0xa00a931d72706fa2402bfc9b441a12eb7c6a61ff42a542916106e3637177f101
18. 0x59f83f7228f07febe2780660e422e171b0359b8aa031ee3be07e991118130c15

Day root

0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab

Chained

0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980

Published

On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0