Evidence row 547802

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://pennydatahq.com/api/postcode/:postcode"
    ]
  ],
  "name": "UK Postcode Lookup",
  "owner_address": "0xd0a3c0f5612ecd88e4b16ef1cd458e1a5e8ffd49",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xd0A3c0f5612EcD88e4b16Ef1cD458e1a5E8FFD49",
        "scheme": "exact"
      }
    ],
    "description": "Location and areas for a Great Britain postcode: latitude and longitude, ward, district, constituency and region, as JSON.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "pathParams": {
              "postcode": ":postcode"
            },
            "queryParams": {},
            "type": "http"
          },
          "output": {
            "example": {
              "constituency": "Cities of London and Westminster",
              "country": "England",
              "district": "Westminster",
              "latitude": 51.50101,
              "longitude": -0.141563,
              "postcode": "SW1A 1AA",
              "region": "London",
              "ward": "St James's"
            },
            "type": "json"
          }
        },
        "routeTemplate": "/api/postcode/:postcode",
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "pathParams": {
                  "properties": {
                    "postcode": {
                      "description": "Great Britain postcode, with or without the space, any case. Northern Ireland (BT) is not supported.",
                      "type": "string"
                    }
                  },
                  "required": [
                    "postcode"
                  ],
                  "type": "object"
                },
                "queryParams": {
                  "properties": {},
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "constituency": {
                      "description": "Westminster parliamentary constituency (2024 boundaries)",
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "country": {
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "district": {
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "latitude": {
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "longitude": {
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "postcode": {
                      "type": "string"
                    },
                    "region": {
                      "description": "English region; null in Scotland and Wales",
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "ward": {
                      "type": [
                        "string",
                        "null"
                      ]
                    }
                  },
                  "required": [
                    "postcode"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-27T14:30:15.22Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-27T14:30:14.81Z"
    },
    "resource": "https://pennydatahq.com/api/postcode/:postcode",
    "serviceName": "UK Postcode Lookup",
    "tags": [
      "uk",
      "postcode",
      "geocoding",
      "location",
      "address"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Location and areas for a Great Britain postcode: latitude and longitude, ward, district, constituency and region, as JSON."
}

What the leaf hashes

{"body":"de01e29929548f90e294df03c669806a73c26f795ec8f5a8281cc43c381d34a3","id":547802,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793133215553267,"prev":null,"subject":"x402_bazaar:https://pennydatahq.com/api/postcode/:postcode","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0x7ab26f8c822e755049dccdd6f43f3a29a9e40b1b1c9643f009d7d7b11cfe4243
2. 0x07a0dc1c9c8733ff152691dfdec07aa04a171793ec000afbe2304833e0257a8e
3. 0xd6c5db11b46f385484c19572d4ce3ecaaa2fe625ec3340e15e6807e241d8225a
4. 0x823de510c53792101d06c1c8edb09be43c960259d5dde13755160eedd073fa18
5. 0x1bce64da332661a7cbd9d58d19f33cedd232f29def20a0bf20eb7edc12758a91
6. 0x0041b0e6947d12750b551e3b6caf44cd8ba4b8ed30f7b0c69c10b89f8430a045
7. 0xff956ab7ba2ebb0d9e560e12c7b5105b0ebbc343a31da43452c24c2353683d11
8. 0x0bcaf8b73c4e018136ec87ee033926cd4b85533a9e27f21857c44308f65f1329
9. 0x57934b7375ed8a1620402e4c71ec4d6583fb2f45765ef4f54bdceb5b734be8c9
10. 0xe9a5d1c6719d67a94924cfd78ac5d857dfe591b756d7a88a4f7a4692f2e58d71
11. 0x926531ee7b85e18ef250d5e2cf7f1fe039b14d7d9a1ebadd7e87f963de66741a
12. 0x0574b16d30fa9d3621e88c3779ea2cd142521826d4e75735f3ae6d4ed075cfc4
13. 0x8f2d125f5fe55a24b5da16577766eeaa13f24a272bb4c1c016f423ae917da681
14. 0x9848c068b1371232529d2b5738fdc45b854c57da041b69ea7c9e112b14e2d9d1
15. 0x275720ecabb68df33eee92ae4fd70572a8d952d6c61c061c2869cfc3217aa5c5
16. 0x23cf9bb4337ee8be7fcae368fd69d24c62c11fb45882127b4cd919bb96a19996
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4