Evidence row 257281

What was observed

{
  "count": 3,
  "tools": [
    {
      "description": "Separate paid Hero headline + subheadline pass. Requires brand_name, audience, and brief or all five structured fields. Currently synchronous; GET is discovery only.",
      "inputSchema": {
        "anyOf": [
          {
            "properties": {
              "brief": {
                "minLength": 1,
                "pattern": "\\S",
                "type": "string"
              }
            },
            "required": [
              "brief"
            ]
          },
          {
            "properties": {
              "benefits": {
                "minLength": 1,
                "pattern": "\\S",
                "type": "string"
              },
              "capabilities": {
                "minLength": 1,
                "pattern": "\\S",
                "type": "string"
              },
              "category": {
                "minLength": 1,
                "pattern": "\\S",
                "type": "string"
              },
              "features": {
                "minLength": 1,
                "pattern": "\\S",
                "type": "string"
              },
              "problem": {
                "minLength": 1,
                "pattern": "\\S",
                "type": "string"
              }
            },
            "required": [
              "problem",
              "category",
              "capabilities",
              "features",
              "benefits"
            ]
          }
        ],
        "properties": {
          "audience": {
            "minLength": 1,
            "pattern": "\\S",
            "type": "string"
          },
          "authorization": {
            "description": "Optional full MPP Authorization header: Payment <credential>. Obtain it from the endpoint's 402 challenge using an MPP wallet or Stripe Link CLI.",
            "type": "string"
          },
          "benefits": {
            "type": "string"
          },
          "brand_name": {
            "minLength": 1,
            "pattern": "\\S",
            "type": "string"
          },
          "brief": {
            "type": "string"
          },
          "capabilities": {
            "type": "string"
          },
          "category": {
            "type": "string"
          },
          "count": {
            "default": 4,
            "description": "Rounded and clamped to 3–5 by the handler.",
            "type": "number"
          },
          "features": {
            "type": "string"
          },
          "problem": {
            "type": "string"
          },
          "product": {
            "type": "string"
          }
        },
        "required": [
          "brand_name",
          "audience"
        ],
        "type": "object"
      },
      "name": "hero"
    },
    {
      "description": "Paid naming pass. Without authorization returns the payment challenge. A 202 includes a poll_url (polling costs nothing extra); do not pay again.",
      "inputSchema": {
        "properties": {
          "authorization": {
            "description": "Optional full MPP Authorization header: Payment <credential>. Obtain it from the endpoint's 402 challenge using an MPP wallet or Stripe Link CLI.",
            "type": "string"
          },
          "brief": {
            "minLength": 1,
            "pattern": "\\S",
            "type": "string"
          },
          "customer": {
            "type": "string"
          },
          "product": {
            "type": "string"
          },
          "rejected": {
            "type": "string"
          }
        },
        "required": [
          "brief"
        ],
        "type": "object"
      },
      "name": "name"
    },
    {
      "description": "Fetch the result of a naming job you already paid for. Supply poll_url or job_id. No new payment.",
      "inputSchema": {
        "anyOf": [
          {
            "required": [
              "poll_url"
            ]
          },
          {
            "required": [
              "job_id"
            ]
          }
        ],
        "properties": {
          "authorization": {
            "description": "Optional full MPP Authorization header: Payment <credential>. Obtain it from the endpoint's 402 challenge using an MPP wallet or Stripe Link CLI.",
            "type": "string"
          },
          "job_id": {
            "type": "string"
          },
          "poll_url": {
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "poll"
    }
  ]
}

What the leaf hashes

{"body":"e8fd1e2f4d95a3af95da1f8909456fb3cb7f12ff0cd1e734656bbfd25f9fa1fa","id":257281,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793029623168317,"prev":null,"subject":"db4c39cc-71d4-4c24-b716-3347b5dbe331","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. 0x1e3624fae6245423e054486dd5a02d13fd77964d2a856a62d80d81a6146b2b1d
2. 0xef09c5c5d7b5d64509c812b31d065b7aa3c351e5a9ac8d39b000f9bddb739de5
3. 0x9b9771d4cb78692ad134f75a1b598cca1835bd96e11325b7cfe72fa8eb621f49
4. 0x6da53712c34bac3eb7680d666778042989cfaabcd4a949d56af7ac24872fa349
5. 0x653366c2a9dc000456d7279354653727fadf0be3d803d06dc105884abefaac66
6. 0x461d3fbc1797fc4c894ae36d067ef5e1858970b4205441355f493360cfb70dd7
7. 0x1d83a8fb6bca510cac5361f8601cb910b96e5ff3d3aa24999bc20f0bae653149
8. 0xe99d752907af6971e4bc20a504e80b43747326ccb57000d8ffd452deaab3bc0b
9. 0x04e47d3073e5cbce2e0372424be0b1280c053b6fc58275ca540924234ead7ca1
10. 0x25369e64d1405d0c4e7fe9646ccf55bf37eedc440887efa43e03c57f5c2a6707
11. 0xf0f77ed1d484625ddaf2f6e58baa64c9dec47a22b1a6beb91219a17bddac7dfa
12. 0x8e3531af6dd328ff9a174dd19751228f67fa0773c68a89edf859dffbd7b098c3
13. 0x42b0d9d5b53af5b0fe99cee10ce29fe484db78b92ce49f97190cc6d098651d47
14. 0x9dfd312f3d4937f7cb144cee3987e8516f222932b4ea286605236d73cfa1ed16
15. 0xc3a6a3ae44ec0da1848b16d40c45d7aac97a67352eea8df18e0f26edabea8a2f
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae