Evidence row 2201721

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://industry-occupation-codes.x402tookit.com/naics-children"
    ]
  ],
  "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": "List the codes one level below a NAICS 2022 code (sector to national industry); omit the code to list the 20 sectors.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "code": "5415"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-21T06:39:52.075Z",
              "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": 1,
              "childLevelName": "NAICS industry",
              "children": [
                {
                  "code": "54151",
                  "level": 5,
                  "levelName": "NAICS industry",
                  "title": "Computer Systems Design and Related Services"
                }
              ],
              "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.",
              "notChecked": [
                "NAICS editions other than 2022",
                "the descriptive text of each code"
              ],
              "parent": {
                "code": "5415",
                "level": 4,
                "levelName": "industry group",
                "title": "Computer Systems Design and Related Services"
              },
              "reasons": [],
              "source": "US Census Bureau NAICS 2022, BLS SOC 2018 and BLS 2025-35 Employment Matrix (public domain)",
              "summary": "5415 \"Computer Systems Design and Related Services\" has 1 NAICS industry below it.",
              "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 5 digits, e.g. 5415 (omit for the sectors)",
                      "type": "string"
                    }
                  },
                  "required": [],
                  "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": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "children": {
                      "items": {
                        "properties": {
                          "code": {
                            "type": [
                              "null",
                              "string"
                            ]
                          },
                          "level": {
                            "type": [
                              "null",
                              "number"
                            ]
                          },
                          "levelName": {
                            "type": [
                              "null",
                              "string"
                            ]
                          },
                          "title": {
                            "type": [
                              "null",
                              "string"
                            ]
                          }
                        },
                        "type": "object"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "parent": {
                      "properties": {
                        "code": {
                          "type": [
                            "null",
                            "string"
                          ]
                        },
                        "level": {
                          "type": [
                            "null",
                            "number"
                          ]
                        },
                        "levelName": {
                          "type": [
                            "null",
                            "string"
                          ]
                        },
                        "title": {
                          "type": [
                            "null",
                            "string"
                          ]
                        }
                      },
                      "type": [
                        "null",
                        "object"
                      ]
                    },
                    "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": "2026-11-01T23:29:14.27Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-01T23:29:14.039Z"
    },
    "resource": "https://industry-occupation-codes.x402tookit.com/naics-children",
    "serviceName": "Industry and Occupation Codes",
    "tags": [
      "naics",
      "industry",
      "hierarchy",
      "codes"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "List the codes one level below a NAICS 2022 code (sector to national industry); omit the code to list the 20 sectors."
}

What the leaf hashes

{"body":"73811c18d3372d6f29456c12e90a3dd3614a36e32bc9bf60df54ba95b0d62a75","id":2201721,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646808002533,"prev":null,"subject":"x402_bazaar:https://industry-occupation-codes.x402tookit.com/naics-children","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. 0xe5907895c6936750fc328db7f3309e25ff5794a200f86efb8150212d3323e913
2. 0xa866d3056bb5c2a3e8ef1b7fe02c9238312ffc45f8ae1d65fa62b4398ecab6f7
3. 0x1d477b74631e2404a842eebe8aedb0f30850ac67491dc2470a1fbab0b2c46af4
4. 0xf791e5fe63ee90b8059067248a675208bad8aeaae5a821f2b7457a17861ce4c7
5. 0xa4d9cc11d5553faf6e7a21bd1ce51dfcb83f56dab18e748d21974f15b4d6a662
6. 0xf20001a7babbf24b7646d09f64ac02d4fa7f5689c9357bb27a00d89de08af069
7. 0x554c1cfbc049dff1de628001e1ddc09eb08dec9f898f4fbab6098b333afea9b4
8. 0x76957402f74f5619feebd8ab6428a80e0aa9858caec147786b2a3517e2eba85e
9. 0x9a38863149114f2657a2fb8f8c10d55ac46967e026acf47b55253d79dd56f7fe
10. 0x4c116e00db1c3643454b3fad0d96facb960dcb409c372cf9df0e50dbc6b43604
11. 0xb11db742ce4f8b1a66d552c1cd8fcefce0bada54ae42fe0e3def7fd89318192a
12. 0x5de7f05542dbb95181c4cd655efb5f574870082798b2bebb6b2d8842abbb03ca
13. 0x699db14025d495a48d39671ab634de3d8cbdf71cc080884a285592176d87ef84
14. 0x3e441d3f53c7b69d6c73ef93d327dfc3071a522c550856540832b34fcb531738
15. 0xd643f764eee39146411d4bff8903a327f4f8f55616e14e57281a245206d6ed2b
16. 0x6dd7e4db65395e8670c7c2747d44fec79e03305934ef4746bf5dbca04ec6ec49
17. 0xec5d643575d83c9e07e65deeef71943b53cbf3007e7e2b9a6ef414081509b0cc
18. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af