Evidence row 527267

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.postcodecontext.uk/api/v1/batch"
    ]
  ],
  "name": "Postcode Context UK",
  "owner_address": "0x8ab7568ac097523e81a94644235fcf19a2b85670",
  "raw": {
    "accepts": [
      {
        "amount": "50000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x8ab7568ac097523e81a94644235fcf19a2b85670",
        "scheme": "exact"
      }
    ],
    "description": "POST /api/v1/batch - Bulk UK Postcode Demographics & IMD Enrichment (1 to 50 postcodes with cohort aggregation and spatial summaries)",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "postcodes": [
                "SW1A 1AA",
                "BB7 3BB",
                "EH1 1YZ"
              ]
            },
            "bodyType": "json",
            "method": "POST",
            "queryParams": {
              "format": "json",
              "view": "full"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "cohort_summary": {
                "average_affluence_score": 76,
                "average_house_price_gbp": 445000,
                "dominant_persona": "Affluent Suburban",
                "total_matched": 3,
                "total_requested": 3
              },
              "results": []
            },
            "type": "json"
          }
        },
        "routeTemplate": "/api/v1/batch",
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "postcodes": {
                      "default": [
                        "SW1A 1AA",
                        "BB7 3BB",
                        "EH1 1YZ"
                      ],
                      "description": "List of 1 to 50 UK postcodes to enrich in bulk",
                      "items": {
                        "type": "string"
                      },
                      "maxItems": 50,
                      "minItems": 1,
                      "type": "array"
                    }
                  },
                  "required": [
                    "postcodes"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "format": {
                      "default": "json",
                      "enum": [
                        "json",
                        "flat",
                        "csv"
                      ],
                      "type": "string"
                    },
                    "view": {
                      "default": "full",
                      "enum": [
                        "full",
                        "summary",
                        "property",
                        "demographics"
                      ],
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1792929344/bazaar-icons/9d2de4e5c0743e69.jpg",
    "lastUpdated": "2026-10-27T09:22:48.06Z",
    "quality": {
      "l30DaysTotalCalls": 7,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-27T09:22:47.756Z"
    },
    "resource": "https://api.postcodecontext.uk/api/v1/batch",
    "serviceName": "Postcode Context UK",
    "tags": [
      "uk-postcode",
      "demographics",
      "property",
      "census",
      "geospatial"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "POST /api/v1/batch - Bulk UK Postcode Demographics & IMD Enrichment (1 to 50 postcodes with cohort aggregation and spatial summaries)"
}

What the leaf hashes

{"body":"ff552cc42a40926d7847d6135c2485c309584953de67ab7ae05434a2b548fe0c","id":527267,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793124796436581,"prev":452342,"subject":"x402_bazaar:https://api.postcodecontext.uk/api/v1/batch","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. 0x6ef900742f08d41c5f2bd3d0599a1c1f49dbd2ac965d07f4db19791a43553dc0
2. 0x265762f5e504e2aa8b269ae79b451885e9d671082e7349d04fce9ab088e6593a
3. 0x3a5231a6a0f2b528b59d052f3896140a2315e2f74dfb2c10fcd11b4ce8bfeb01
4. 0x879d231360957c851ca73ba90a62b15ac85936d04e678d5bbdcee2e217d089a7
5. 0xb47d35832a832aadb700dfab3f7c39083fc92d42db4931f38920d4189a845bd7
6. 0xe9facc85726d34a35bbfe29b6895fe3522e177f5ade511d9b976d9557d847a8d
7. 0x041244f3933a50e0255e4fec5acf5ff350e69755afc289b9a957e382324c21e6
8. 0x8e06f7ae1159173599bbe93e9253cfa0b549b1723d58e552e5c6afe907ebf2e2
9. 0x3893379a1aea365968e8c12173a26e66f9a87351053165741759404718a4f117
10. 0xc29650db60795ec82f45e9969f6b0a4c48579a02b5ea6cdd47974099180e7cc1
11. 0x040640e4e07fb01070334ad90420bc979cc6533217449ddacb84ff50f0700a8b
12. 0x346adc8ebb20cf5f1a3349535238f6ff723da69f956f4b8324d3ec6271a3c969
13. 0xa7e162a9119a39c37b96b3483510d3fd108f25676fe3a9584241629612b01526
14. 0xb2ae53d841a55a805fb4078b1a7d44e08a81aba4be3690bac3a5b4c366bf39da
15. 0x275720ecabb68df33eee92ae4fd70572a8d952d6c61c061c2869cfc3217aa5c5
16. 0x23cf9bb4337ee8be7fcae368fd69d24c62c11fb45882127b4cd919bb96a19996
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4