Evidence row 2201722

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://industry-occupation-codes.x402tookit.com/code-validate"
    ]
  ],
  "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": "Check whether a code is a valid NAICS 2022 or SOC 2018 code, at what level, and which system it belongs to.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "code": "151252"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-21T06:39:51.824Z",
              "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…",
              "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.",
              "formatsRecognised": [
                "naics",
                "soc"
              ],
              "input": "151252",
              "matches": [
                {
                  "code": "15-1252",
                  "level": 4,
                  "levelName": "detailed occupation",
                  "normalized": "15-1252",
                  "system": "SOC 2018",
                  "title": "Software Developers"
                }
              ],
              "notChecked": [
                "NAICS 2017 or SOC 2010 and earlier codes (shown as not found)",
                "other classification systems (SIC, NACE, ISIC, O*NET-SOC detail beyond the .00 suffix)"
              ],
              "reasons": [],
              "source": "US Census Bureau NAICS 2022, BLS SOC 2018 and BLS 2025-35 Employment Matrix (public domain)",
              "summary": "15-1252 is a valid SOC 2018 detailed occupation: Software Developers.",
              "verdict": "VALID"
            },
            "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": "Code to check, e.g. 541511, 15-1252, 151252, 15-1252.00 or 31-33",
                      "type": "string"
                    },
                    "system": {
                      "description": "naics or soc to test only that system (default: both)",
                      "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"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "formatsRecognised": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "input": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "matches": {
                      "items": {
                        "properties": {
                          "code": {
                            "type": [
                              "null",
                              "string"
                            ]
                          },
                          "level": {
                            "type": [
                              "null",
                              "number"
                            ]
                          },
                          "levelName": {
                            "type": [
                              "null",
                              "string"
                            ]
                          },
                          "normalized": {
                            "type": [
                              "null",
                              "string"
                            ]
                          },
                          "system": {
                            "type": [
                              "null",
                              "string"
                            ]
                          },
                          "title": {
                            "type": [
                              "null",
                              "string"
                            ]
                          }
                        },
                        "type": "object"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "reasons": {
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T23:29:11.764Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-01T23:29:11.48Z"
    },
    "resource": "https://industry-occupation-codes.x402tookit.com/code-validate",
    "serviceName": "Industry and Occupation Codes",
    "tags": [
      "naics",
      "soc",
      "validation",
      "codes"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Check whether a code is a valid NAICS 2022 or SOC 2018 code, at what level, and which system it belongs to."
}

What the leaf hashes

{"body":"5b4f5399f5953e8e0ee719581ad19158fca5e4d5e2e485c648cb34a991e4733c","id":2201722,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646808007122,"prev":null,"subject":"x402_bazaar:https://industry-occupation-codes.x402tookit.com/code-validate","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. 0x2ff3c06eca4b75ecdf0035abd316f65571b6607f5b15b9c2d07ff2d8f5fc9fde
2. 0x0315ecd54d648d31731ac28179f4aa36a99e6dc7c32cc2339641edf4e65255cd
3. 0xc7a290fae4c3cb8e4a25dd251b4eb0b01f5579e1d970d2ef35ef16aa6ff33278
4. 0x8042a7c33776e74a57013c0c401fb34c8a96538de0fbd48690eaf228186ff141
5. 0x574e3aee7440e992ebc6305091f6e2649c17186960758b1d092fc2d7bd8e6086
6. 0xbfd072641bbb869641c1edbf981c9a9ff8847ae7a4cded5d244b0a662cb6f678
7. 0xf1806cd8296645d9799269b8ca85f1ac24259f997a44cdf0fc616943b3028be9
8. 0xb9d5f72608c9fd2a34d455d7277f67d8e2cfe8fbb6f7464e22743c2a47ad78e2
9. 0x0add03ccd5bac55693b860b4d6227d13a887eecaaf8b594e27e26c397e740462
10. 0x44e2b9e750a47da2a4c13ede07cc76f9bc07983895114cb8bdb9f4ddd945f45e
11. 0x83c0ab9422938edcaf9291b4dba948045692c513a3441ef196db65d0072a3fce
12. 0xd02b59f5289a7e4f418fa177885dbe768742fd98e5bf0532eaadff55a79c5864
13. 0xe0a95aa0d153f7a034b0dbeb91c5460c64c47c22ac037e0e8cfa69f4ff734b69
14. 0x74cae95d275254a9c747b603bd40b5086c5725fd3e904782e6447e4647e8b049
15. 0x464ce6fe060d0a6c4e810b71501e55084086148f7daf393caa14462b1a777022
16. 0xd42916b5c6441e9c8d91ff91715af1489cb83dee26d47e7da107caa4d2a68b65
17. 0xa20b9be86af7d690e040c9060a373b2fc5498edf3432f43c26f74fa2febc1e9a
18. 0x050f2978b537f7afb21ee1551577cdf146d1c56f4df12d24315ae5e69366b0a4
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af