Evidence row 278504

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://402timezones.vercel.app/api/convert-timezone"
    ]
  ],
  "name": "Timezone Converter",
  "owner_address": "0xba667287b8ef89565f8fd7acd4d22ce98e0f39cd",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xbA667287B8Ef89565F8fD7AcD4d22Ce98E0f39cd",
        "scheme": "exact"
      }
    ],
    "description": "Convert a time between any two IANA time zones (DST-aware). Pay-per-call in USDC on Base.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "from": "America/New_York",
              "time": "2026-07-04T15:30",
              "to": "Asia/Tokyo"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "result": {
                "from": {
                  "localTime": "2026-07-04T15:30:00",
                  "offset": "-04:00",
                  "timeZone": "America/New_York"
                },
                "to": {
                  "localTime": "2026-07-05T04:30:00",
                  "offset": "+09:00",
                  "timeZone": "Asia/Tokyo"
                },
                "utc": "2026-07-04T19:30:00.000Z"
              },
              "service": "Timezone Converter"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "from": {
                      "description": "Source IANA time zone",
                      "type": "string"
                    },
                    "time": {
                      "description": "Wall-clock time in the source zone, or 'now' (optional)",
                      "type": "string"
                    },
                    "to": {
                      "description": "Target IANA time zone",
                      "type": "string"
                    }
                  },
                  "required": [
                    "from",
                    "to"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      },
      "builder-code": {
        "info": {
          "a": "bc_zr9oznjo"
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "additionalProperties": false,
          "properties": {
            "a": {
              "description": "App builder code",
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            },
            "s": {
              "description": "Service builder codes",
              "items": {
                "pattern": "^[a-z0-9_]{1,32}$",
                "type": "string"
              },
              "type": "array"
            },
            "w": {
              "description": "Wallet builder code",
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            }
          },
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-07T04:30:29.323Z",
    "quality": {
      "l30DaysTotalCalls": 9,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-07T04:30:29.171Z"
    },
    "resource": "https://402timezones.vercel.app/api/convert-timezone",
    "serviceName": "Timezone Converter",
    "tags": [
      "time",
      "timezone",
      "utility",
      "datetime",
      "converter"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Convert a time between any two IANA time zones (DST-aware). Pay-per-call in USDC on Base."
}

What the leaf hashes

{"body":"14454bf8fd3029d784ca96bbacfa10a6fbe6adf92102f747cc39a71c94413f33","id":278504,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793042074655814,"prev":60514,"subject":"x402_bazaar:https://402timezones.vercel.app/api/convert-timezone","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. 0x494f27602d58f7433222ac0f60ff787bfcb65752ec33a8b29fce1e83dd307a20
2. 0xa4bf86feaaeddc0f37b3c6f6a8777005966e3329305d162612f01afec2bf948c
3. 0x12b1b7142ca84f5a066655797de78af84fead7a9f6a9dc333cb905dbc7032521
4. 0xd4c72d560a48c4c3d1916de3008bb05a645249220b0a2fce97fe589b1ccfcf83
5. 0xa9041ed98cdb86b7fe8c42b96d7bae1b4b7d2eb7d270de43dd60925740ccea0e
6. 0xc34cbd94de8278c407d9d05ff9ed47d3756a91615487871ed87ddec160eca1b5
7. 0xc40e5c9a64e91896822da4a4c59765e8d04086a5d1ed0e93df45e81aa00eeecf
8. 0x437b009cc6c82c691f1e926b9d710b75ae2d605e36200844b7be55b222e99a90
9. 0xec7485b81975f55f661fbcf11647d3620f1264635c65efce2232fda47fcf7578
10. 0xf6623a394eb309bb86b964132205c8c6254e0667f6c642b476ce25978eabf36a
11. 0xa40c09a143bc388ccac821ec3854902941c513470a57a806c98060a6d63aedf9
12. 0xee7d5711cd2515f4b08f3e4041d3d56304f9db6bffd82d82746f0f4ea43b8f26
13. 0xb86fa861d04737cb507e721eefbb066d26528fdb6017b1145c18d1223b93ee21
14. 0x88e326a39b26e2c125306c9d3805d14398ace088bba9a2a0aa376b811cfb201a
15. 0x2be1e80e065dd6b2cc75a7142be22225acd144ac975d70bf24b4f01fd76dc497
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae