Evidence row 1791514

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://minty-sprout.onrender.com/v1/math-eval"
    ]
  ],
  "name": "Foundry",
  "owner_address": "0x11dced0487ca3e7d9032029dcb302253ccf4e0de",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x11DCED0487cA3E7d9032029DCb302253ccF4e0DE",
        "scheme": "exact"
      }
    ],
    "description": "Math calculator: safely evaluates an expression with + - * / % ^, parentheses, pi, e and functions like sqrt, sin, log. Input: '2^10 + sqrt(16)'.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "input": "2^10 + sqrt(16)"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "expression": "2^10 + sqrt(16)",
              "result": 1028,
              "result_str": "1028"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "input": {
                      "description": "A math expression",
                      "maxLength": 8000,
                      "type": "string"
                    }
                  },
                  "required": [
                    "input"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-31T22:45:34.763Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-31T22:45:34.594Z"
    },
    "resource": "https://minty-sprout.onrender.com/v1/math-eval",
    "serviceName": "Foundry",
    "tags": [
      "math",
      "calculator",
      "evaluate",
      "expression"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Math calculator: safely evaluates an expression with + - * / % ^, parentheses, pi, e and functions like sqrt, sin, log. Input: '2^10 + sqrt(16)'."
}

What the leaf hashes

{"body":"525e39c904b13b28fd763234851b8fe40e2314c65dd4ce1155988be85f6b714d","id":1791514,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793559984889543,"prev":null,"subject":"x402_bazaar:https://minty-sprout.onrender.com/v1/math-eval","subject_kind":"source_record"}

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. 0xa0672b1f4928c61279c1a64060971be989bfaeff483acd0f337db8be82549e89
2. 0x6143521bee92bbf99d9e3a366f953e402b4ad5261d3bf7373f03737661c242a3
3. 0x5fe019db4d81cba67239fc5f6cb0104d4dd155bd17e78bd7b471e709f14082bc
4. 0xd8785625365d287af37c1a16848884dc1140a909c1fe4ffb49eb017fc2289e4f
5. 0x0519313883c8229ebd017aeff5f34309a08621e9838962a2c75c1791a1d8f591
6. 0x3eeafdf9855b9ac4cce7b7e0a3a6f7053971997678d04aa63e977e6146b31121
7. 0xebd8a406df592b4af64bc9ba0fb3e92fb4cdea5993274283fdc1bb245ded92ad
8. 0x1a5c8f81da49e69a7e1aea7fc511ed09300f14dd2714dc930f3cd153b96d15b0
9. 0x52e1474551a794733c762f1050aa1eda8ac56ff1544fb6a5d50ddde32e849279
10. 0x0ec05465d6f0c1e9664022a52ab69fc09d21dee3e6fd0c236d4873f7c2855dd6
11. 0x1b712d36de169128bfd6f9641d9b03646c89c2d5d8cd255208ec10c561c799d0
12. 0x4c8d70bbc71171c6f09376b1cd5cdb76fcc86cf6f4242fe3365e640972ba1ec2
13. 0x4d2f8da78dc8a660de1d8b86f0083d4295117c283b6de5334a6a9d06be22e64e
14. 0x699b83b189435f7ea2dc2d6d4f13262932214c0f9293f3ad20a20f7633995f1b
15. 0x4a900ec4cce00639b2e45adc5a7ba556793a171aadb927fa15d539147429570d
16. 0xc2b1c84ef3531511a3d8d9db5ff9eeca2725a3782e7f9c4ac87fc0f1588349fa
17. 0x0c618c42b286ad61acd8204aa6dcf024b8b041d3759aa585bf4e221abc39cb5d
18. 0x6142ac48fda269c17791c79da99c2456ac6acfe98268f4d168a404fd6040c703
19. 0x3315fd2757fdd435852cc277377234a3f3909a6d2a089d0e36f6d59aacfda910

Day root

0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3

Chained

0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4

Published

On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90