Evidence row 1767114

What was observed

{
  "count": 2,
  "tools": [
    {
      "description": "Chat completion on a frontier model: GPT-6.1 Sol and Terra, GPT-5.5, Claude Sonnet 5.5 and Haiku 5.5, Gemini 3.8 Flash, Grok 4.7, GPT-6 Luna (default anthropic/claude-haiku-5.5; see the models tool). Same shape as OpenAI chat: messages, optional max_tokens (default 1024, max 8192), temperature, tools. Price is quoted per call from your input size and max_tokens: (estimated input tokens x input rate + max_tokens x output rate) x 1.4 + $0.0005, minimum $0.002; the 402 states the exact amount. Charged only if the model call succeeds. Thinking models (GPT-5.5, Gemini, Grok, gpt-oss) spend part of max_tokens on reasoning: give them room, or set reasoning_effort (default low). Prompts go to the model's provider and are not stored by Payperwork. No streaming.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "max_tokens": {
            "maximum": 8192,
            "minimum": 1,
            "type": "integer"
          },
          "messages": {
            "items": {
              "additionalProperties": {},
              "properties": {
                "content": {},
                "name": {
                  "type": "string"
                },
                "role": {
                  "type": "string"
                },
                "tool_call_id": {
                  "type": "string"
                },
                "tool_calls": {}
              },
              "required": [
                "role",
                "content"
              ],
              "type": "object"
            },
            "maxItems": 200,
            "minItems": 1,
            "type": "array"
          },
          "model": {
            "type": "string"
          },
          "reasoning_effort": {
            "enum": [
              "none",
              "low",
              "medium",
              "high"
            ],
            "type": "string"
          },
          "response_format": {},
          "stop": {
            "anyOf": [
              {
                "type": "string"
              },
              {
                "items": {
                  "type": "string"
                },
                "type": "array"
              }
            ]
          },
          "temperature": {
            "maximum": 2,
            "minimum": 0,
            "type": "number"
          },
          "tool_choice": {},
          "tools": {
            "items": {},
            "type": "array"
          },
          "top_p": {
            "maximum": 1,
            "minimum": 0,
            "type": "number"
          }
        },
        "required": [
          "messages"
        ],
        "type": "object"
      },
      "name": "chat"
    },
    {
      "description": "List the available models with provider rates, the pricing formula and limits. Free.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {},
        "type": "object"
      },
      "name": "models"
    }
  ]
}

What the leaf hashes

{"body":"1a79902a78dc613ad4159db5ecd27dab2f5d1c85850368cd70d16217988f83fc","id":1767114,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793539918049944,"prev":null,"subject":"3c145dee-0234-40ae-a534-d8fde5642ced","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-01 (302406 rows).

1. 0x9708c268097336e414c104eed73cc85e0ed725a5eea97f807789629a81224aa0
2. 0x6ef0a4c035e241f7889b243d29ce8d439caf5beacefcaafebee13d27605cbc4a
3. 0xf298e5f8588e7f6ba1d68d5990cc9c68ef5e1fd5fb53df4bb856330e1b1b25de
4. 0xd0d8e38ce641d08c87fe4acacb30cbbbdbab45a312693496d3cf4b6aade73864
5. 0x7231079edeef137dd9272f71107b6a04c4325eb2846933dfd492ef0872ef3432
6. 0x280a0eaa7cd0651cf2d089cd3411105507122eaa085f1a53a5d8a53c7285c276
7. 0x33c67ea2fa96cfef32ad336fed142331097f6bee25ba44cb9800b6ac21610b22
8. 0x642ea193d572769bb70751d5c66d6a2ef5ce2d657de9ff724aecbe55ab1c6e15
9. 0xc7f46701a417b600bad66da8db6b1dfe9dbc97fd46b2d2d0be2e6fb577ef1342
10. 0xdf9bc560ffc5f553932c4ddac93236e0b39922a1445d981f8b8cf49d3ec44fbb
11. 0x33407ef6c8a6d8250e4b6692381cd459cbdca29f87ea9dd534844e7752d0236d
12. 0x8672058a7ccedbe11a2fef93937317f7b0ca7f6df11e6cb05a9a8f81a9e040c0
13. 0x5fa48d4b29f08942a71ddc94700c9e76269811b21fe904993da8011a51962f43
14. 0x4a947b63bd24ff0fe59b3ababead63ec46e4f0a77216d7b01b8bdbc5c7c01e63
15. 0x23107b06227fe01d939429fa5248f5555093c421dfc6b8bc6ba3518a65263d17
16. 0xc2b1c84ef3531511a3d8d9db5ff9eeca2725a3782e7f9c4ac87fc0f1588349fa
17. 0x0c618c42b286ad61acd8204aa6dcf024b8b041d3759aa585bf4e221abc39cb5d
18. 0x6142ac48fda269c17791c79da99c2456ac6acfe98268f4d168a404fd6040c703
19. 0x3315fd2757fdd435852cc277377234a3f3909a6d2a089d0e36f6d59aacfda910

Day root

0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3

Chained

0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4

Published

On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90