Evidence row 2201720

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://industry-occupation-codes.x402tookit.com/naics-lookup"
    ]
  ],
  "name": "Industry and Occupation Codes",
  "owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
  "raw": {
    "accepts": [
      {
        "amount": "20000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
          "transactionVersions": [
            0
          ]
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:42161",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      }
    ],
    "description": "NAICS 2022 code to title, level (sector to national industry) and full parent chain. Census Bureau data.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "code": "541511"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-21T06:39:52.339Z",
              "attribution": "Sources: US Census Bureau (NAICS 2022), US Bureau of Labor Statistics (SOC 2018; 2025-35 National Employment Matrix, employment in thousands), public domain, snapshot 2026-10-21. Not endorsed by eithe…",
              "childCount": 0,
              "childLevelName": null,
              "code": "541511",
              "degraded": false,
              "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
              "input": "541511",
              "level": 6,
              "levelName": "national industry",
              "notChecked": [
                "NAICS 2017 and earlier editions (codes may differ)",
                "the Census descriptive text and cross-references for the code",
                "…1 more"
              ],
              "parentChain": [
                {
                  "code": "54",
                  "level": 2,
                  "levelName": "sector",
                  "title": "Professional, Scientific, and Technical Services"
                },
                {
                  "code": "541",
                  "level": 3,
                  "levelName": "subsector",
                  "title": "Professional, Scientific, and Technical Services"
                }
              ],
              "reasons": [],
              "source": "US Census Bureau NAICS 2022, BLS SOC 2018 and BLS 2025-35 Employment Matrix (public domain)",
              "summary": "541511 is \"Custom Computer Programming Services\", a NAICS 2022 national industry under 54151 Computer Systems Design and Related Services.",
              "title": "Custom Computer Programming Services",
              "verdict": "FOUND"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "code": {
                      "description": "NAICS 2022 code of 2 to 6 digits, e.g. 541511, or a sector range like 31-33",
                      "type": "string"
                    }
                  },
                  "required": [
                    "code"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "attribution": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "childCount": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "childLevelName": {},
                    "code": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "input": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "level": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "levelName": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "parentChain": {
                      "items": {
                        "properties": {
                          "code": {
                            "type": [
                              "null",
                              "string"
                            ]
                          },
                          "level": {
                            "type": [
                              "null",
                              "number"
                            ]
                          },
                          "levelName": {
                            "type": [
                              "null",
                              "string"
                            ]
                          },
                          "title": {
                            "type": [
                              "null",
                              "string"
                            ]
                          }
                        },
                        "type": "object"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "reasons": {
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "title": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T23:29:17.656Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-01T23:29:17.508Z"
    },
    "resource": "https://industry-occupation-codes.x402tookit.com/naics-lookup",
    "serviceName": "Industry and Occupation Codes",
    "tags": [
      "naics",
      "industry",
      "codes",
      "census"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "NAICS 2022 code to title, level (sector to national industry) and full parent chain. Census Bureau data."
}

What the leaf hashes

{"body":"bc0e7514e01617142063cffa7b9c9c276636e9932284eb86e7e70cdb79c06161","id":2201720,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646807998263,"prev":null,"subject":"x402_bazaar:https://industry-occupation-codes.x402tookit.com/naics-lookup","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-02 (444186 rows).

1. 0xe7564c3e736e7a1d2d3d2b33bc01d50eab42b0ff58a1beced640bd8d1fa7d035
2. 0xb47ec490fd593da8a59d9c3b720256e2b0f92f1d1823d58fffabffa1d350f1c1
3. 0xcbb3b6c01ef18a3ab45177661737fd8821119d6f20ba750d264821c94dfad308
4. 0x730bbe74f56a5ee07916136ac50af610dead0f12057709115fc111d88921426a
5. 0x6bcf0083051c90dfb6b523734a66a70f43f3848f1f47010e69495466f0a14b9a
6. 0xbb55172824503bac9cbaa7e2de618e8047ac383a3e71d175d0944b2fa18be66e
7. 0xe305663b01aa34290a004aeb5a9f6b894c1fa9f6ae475c74cb3c914d26afa2e1
8. 0x8f97b701de83cace0ba8db50918ebb494ca1947351d9ec25cb8f4d79052f9acf
9. 0xc1df363d3c41638695fdbf14aa38faa33933091ca9e1ff44de081eb80854d300
10. 0xeb77175545832079032c6c1b6217d919a2a08eb82b937b9a9171a0399c7c30c0
11. 0xefa8d9243871e2979fc6ddf8cb136359d9a8b6444343cc009a1cd50af6f690af
12. 0x841ad4eaef71169e03e95d2082a5c83db1b3a56a9753b17df04fe34aa579b749
13. 0x0418958fa118b0a6a70d8e336a1073213853f5a3502b9ffc66202cc82d3dd472
14. 0xf02baa2f8f9b385919b2f698b2e9351b84bd44118a8d5a72f2d1303df2c329b4
15. 0xd643f764eee39146411d4bff8903a327f4f8f55616e14e57281a245206d6ed2b
16. 0x6dd7e4db65395e8670c7c2747d44fec79e03305934ef4746bf5dbca04ec6ec49
17. 0xec5d643575d83c9e07e65deeef71943b53cbf3007e7e2b9a6ef414081509b0cc
18. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af