Evidence row 527269

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.postcodecontext.uk/api/v1/postcode/:postcode"
    ]
  ],
  "name": "Postcode Context UK",
  "owner_address": "0x8ab7568ac097523e81a94644235fcf19a2b85670",
  "raw": {
    "accepts": [
      {
        "amount": "5000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x8ab7568ac097523e81a94644235fcf19a2b85670",
        "scheme": "exact"
      }
    ],
    "description": "GET /api/v1/postcode/:postcode - Single UK Postcode Socio-Economic Profile (ONS Census 2021 demographics, IMD 2019 deciles, Land Registry prices, GBP/sqm, EPC ratings, broadband speeds)",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "pathParams": {
              "postcode": "M11AE"
            },
            "queryParams": {
              "format": "json",
              "view": "full"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "deprivation_deciles": {
                "_scale_explanation": "1 = Most Deprived 10% in nation, 10 = Least Deprived 10%",
                "crime_safety_decile": 4,
                "imd_overall_decile": 8
              },
              "location": {
                "clean_postcode": "SW1A1AA",
                "latitude": 51.501009,
                "local_authority": "Westminster",
                "longitude": -0.141588,
                "lsoa_code": "E01004736",
                "outcode": "SW1A",
                "postcode": "SW1A 1AA",
                "region_or_nation": "London"
              },
              "property_and_energy": {
                "dominant_property_type": "Flat/Maisonette",
                "epc_rating_current": "C",
                "median_house_price_gbp": 1250000,
                "price_per_sqm_gbp": 14200
              },
              "summary_for_ai": {
                "affluence_score_100": 94,
                "affluence_tier": "Ultra-Prime",
                "ai_context_briefing": "Affluent urban postcode in Westminster (SW1A 1AA) with median property values of GBP 1,250,000, low deprivation (IMD Decile 8), and 89.4% gigabit broadband.",
                "commuter_connectivity_score_100": 99,
                "family_suitability_score_100": 62,
                "primary_persona_tag": "Metro Elite & Civic Core",
                "property_value_index": 98
              }
            },
            "type": "json"
          }
        },
        "routeTemplate": "/api/v1/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": {
                      "default": "SW1A1AA",
                      "description": "UK postcode (e.g. SW1A 1AA, BB7 3BB)",
                      "type": "string"
                    }
                  },
                  "required": [
                    "postcode"
                  ],
                  "type": "object"
                },
                "queryParams": {
                  "properties": {
                    "format": {
                      "default": "json",
                      "enum": [
                        "json",
                        "flat",
                        "csv"
                      ],
                      "type": "string"
                    },
                    "view": {
                      "default": "full",
                      "description": "Slice target view: full, summary (~80 tokens), property, or demographics",
                      "enum": [
                        "full",
                        "summary",
                        "property",
                        "demographics"
                      ],
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "pathParams"
              ],
              "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": "2026-10-27T09:22:45.966Z",
    "quality": {
      "l30DaysTotalCalls": 5,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-27T09:22:45.831Z"
    },
    "resource": "https://api.postcodecontext.uk/api/v1/postcode/:postcode",
    "serviceName": "Postcode Context UK",
    "tags": [
      "uk-postcode",
      "demographics",
      "property",
      "census",
      "geospatial"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "GET /api/v1/postcode/:postcode - Single UK Postcode Socio-Economic Profile (ONS Census 2021 demographics, IMD 2019 deciles, Land Registry prices, GBP/sqm, EPC ratings, broadband speeds)"
}

What the leaf hashes

{"body":"692d009f027ba6cb0a6e1389763023376d0cbdcbada63fc478c8e87934cea130","id":527269,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793124796442197,"prev":452344,"subject":"x402_bazaar:https://api.postcodecontext.uk/api/v1/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. 0x47232dd0576f8373445fbd8dc72768403eaf3b4e557d4561ef5d5f9248186e46
2. 0x954e987ece76b628b9460d5c9f1391b05ff927238e6a481d3bbcf7d9767ced44
3. 0x263f08b6e7aa56573f1d467cdf06b17da80c8024917728c206b32149f5ec3b9d
4. 0xdf04b5275b6086e85ec7048ecaab9300297b19fe8dd95dad10f6a47114221608
5. 0x71618e0f6e19c48162cccd6577d495f1ebeda48d564b50822ef04c32ef634b2b
6. 0x1ec645e8554d2be8326787d0e4c4bb9e77799fc1e8b1053d34fbe05d0b1eb6bd
7. 0x1cc9d35b11eef870246980c62e5daee3c8649885ee90696f0f543ccf1c743e4b
8. 0xf202294191a95e73a55388db120f3352a01f9e28a5188482eef48e52af31a94d
9. 0xbb95480555cc75ab19ac06e6443d19b29613d87c5a3a1415887af60aa89d0eca
10. 0xe7dfb7a86983e740df392c84ac033dd18d0cec373e6d2f712a12e52185b672f4
11. 0x6ed6652c0a61c43ddac9d506feb91d6c0a14dfe1cb98614f64edec2e4d6f5a91
12. 0x92473b1fa79263164c4ce7d79f93b1dc8a85f63587b51a81433d1ad19b285a90
13. 0x836e1796750a28d286ffaa8d273d250fe348c563336bf2d30cfaf1001d95f677
14. 0x80ede9e5d428e39db26928b1d08254ff1241f1d7e091fd2e57130fbb4423162b
15. 0x2c117b27721eea45f6590fbccb471d21a7b0b079a53f089ecb300c63bdb3aebf
16. 0x3ed50f053eca72dfd3a9d45a11935240bfe691e57835c367ddebe2cbc49efe9d
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4