Evidence row 81195

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": "2026-10-26T11:00:11.104Z",
    "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":"8df7b2f89d0fe47b0a70b87cc83543bb476e25f42f8374400a5c941eb185add5","id":81195,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793025499950040,"prev":null,"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 2026-10-26 (296695 rows).

1. 0x3a06409725fdef83859fc8aa4a1a4abad3e7072e1c1c98e5b74b7214b297b1ad
2. 0x75b9a102680ed967b9f41602d3a16f102dc887facd282f207263d8325f933f53
3. 0xe45ac42198b182732939ba0f6a87722a9271d9737d26b61ce33ee24f11980f1f
4. 0x264ee6bb45d10fc96d60024d8cc3a5461fe4b094d2f2e7327ae158e77ece3ec8
5. 0x1c8deb8036b158acfb84354ff25728e1d8233a44670aa045815c534fdeb4d44a
6. 0xaa3e8ed1ad3ee08d45d5405033627a6c534b2d5911a0d1ad142dbe095ced996b
7. 0x95c21ec6acef61e5411fa049ee8e71a0f5d2c2b25cf7b768c0228dfc91f498dd
8. 0x442bd2aec1d6117eb6ff4a37dd3f39c12c88305d8f7fc6ea337792e077b96bf9
9. 0xe51475e9e26b161586e5cee358e63354a336fde4cd9d2fe7a7f90c67097721a7
10. 0xfda15cdc71a49ed951aef5d062ed510394ecacc85a2243302429b8300694e535
11. 0xd9b921e2251851de5c43bdbb4f58d5e2fa1aee215c84e0f3e0426cf1e4a08e8f
12. 0x18cc4431e4bbe45ee72defb9bb3318434364bf71c883055c6197fa7102ec601a
13. 0xe2214b3d6a48396930d1739b02ea366de2aac5337c9b9ff2aff28cecf6518139
14. 0x7f594f5609f388d64d3cda87b5631d393ee8300bb09bad71f150113a5886ee33
15. 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae