Evidence row 409316

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402-niche-briefs.fly.dev/v1/fda-medical-device-510k-check"
    ]
  ],
  "name": "FDA device 510(k) pathway check",
  "owner_address": "0x847f54ae8ddfd71ed7bc930c1f7a73576fab03a9",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x847f54ae8dDFD71ed7bC930C1f7a73576FAb03A9",
        "scheme": "exact"
      }
    ],
    "description": "Classify device pathway: Class I exempt, Class II 510(k), or general wellness.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "device_class": "class_i_exempt",
              "sterile": "false"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "as_of": "2026-10-25",
              "disclaimer": "Educational reference and automated checklist only; not legal advice.",
              "flags": [],
              "input": {
                "device_class": "class_i_exempt",
                "sterile": false
              },
              "regulations": [
                "21 CFR 807 (registration & listing)",
                "21 CFR 820/QMSR"
              ],
              "required_elements": [
                "establishment registration",
                "device listing"
              ],
              "risk_level": "low"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "device_class": {
                      "description": "Device class",
                      "enum": [
                        "class_i_exempt",
                        "class_ii_510k",
                        "wellness_general"
                      ],
                      "type": "string"
                    },
                    "sterile": {
                      "description": "Sold sterile",
                      "type": "string"
                    }
                  },
                  "required": [
                    "device_class",
                    "sterile"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "$schema": "https://json-schema.org/draft/2020-12/schema",
                  "properties": {
                    "as_of": {
                      "type": "string"
                    },
                    "disclaimer": {
                      "type": "string"
                    },
                    "flags": {
                      "type": "array"
                    },
                    "input": {
                      "properties": {
                        "device_class": {
                          "type": "string"
                        },
                        "sterile": {
                          "type": "boolean"
                        }
                      },
                      "required": [
                        "device_class",
                        "sterile"
                      ],
                      "type": "object"
                    },
                    "regulations": {
                      "items": {
                        "type": "string"
                      },
                      "type": "array"
                    },
                    "required_elements": {
                      "items": {
                        "type": "string"
                      },
                      "type": "array"
                    },
                    "risk_level": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "input",
                    "risk_level",
                    "regulations",
                    "required_elements",
                    "flags",
                    "disclaimer",
                    "as_of"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-27T02:33:20.193Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-26T11:00:10.917Z"
    },
    "resource": "https://x402-niche-briefs.fly.dev/v1/fda-medical-device-510k-check",
    "serviceName": "FDA device 510(k) pathway check",
    "tags": [
      "compliance",
      "fda",
      "device"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Classify device pathway: Class I exempt, Class II 510(k), or general wellness."
}

What the leaf hashes

{"body":"208ea279eee825abe91c8e420c324305520bca9df450afb1dcf02a26e9933660","id":409316,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793080369459381,"prev":81195,"subject":"x402_bazaar:https://x402-niche-briefs.fly.dev/v1/fda-medical-device-510k-check","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0xe6a18dec71d7139873a8c259946c542dd0f75948f92e0b2dd37b386cda185641
2. 0xc5868fde3a545a372822398f6f38d89a98d0000092009afd046fe3107679e8e7
3. 0x5dcc228011b57cacabd07c297e690c16aa3d91940fe6e0190f7a6305b7996172
4. 0xab423771f5578c04323cd31f518b315c27652a2b7bbe9522cee3b8a5ae3614b3
5. 0x05db14dbf14641069bc49d504c49b954114538ac6cd00cce64347dd38a7f177f
6. 0x52b9c3cc503cdd3da32709add02357260de573efa9cd632873b4ac849c2d7368
7. 0x6867cc160d2bbb0d8c1f7aa524c513624ca52b6e464bd43bb93252271ae19f8b
8. 0xaafeaf6e2a761511eb3194c7fd2ad9effd847b2a875b7c5969841ce9265d7002
9. 0x88a3c0848003c780e7952b3b723d41a750bc5f6e8aa977d279d3b5e4f60f990f
10. 0x8896363d18a5cfe0154b434ff2241b58169d1c6c98537aa814262b96f9a64e87
11. 0x27777a9ff9447785be83317401e6f0310ebd43498467f01fedc3424c0ea9deb5
12. 0x4f9b484326a98846a2342f967ce1e64ee9fa304288bb4355ab666475eb77b61c
13. 0xab6eb305329046d5ccb835dd8ca955f794e3ca110379a94dbdc780d016448561
14. 0x41f9f462759cb539183e979fb3eb967d94755cf039c44a64a9a3c4ad97523cfd
15. 0x56f7109d4cde42492651beb1237c13cdcbf95e6fee2b2482391a2388e04c4629
16. 0x8745bd887f5ce9f7a49558fd2b04cdcd97a05ea9f8a23f62d0e80cb13d328b0f
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4