Evidence row 68113

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, £/sqm, EPC ratings, broadband speeds)",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "pathParams": {
              "postcode": "SW1A 1AA"
            },
            "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 £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": "2026-10-25T11:55:46.856Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-25T11:55:46.622Z"
    },
    "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, £/sqm, EPC ratings, broadband speeds)"
}

What the leaf hashes

{"body":"a9a17a811f236e77f68ec9c51bf25842eda275b50b3bc7da585ee685e7c2fd08","id":68113,"kind":"listing","method":"baseline/1","observed_us":1793025466198664,"prev":null,"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 2026-10-26 (296695 rows).

1. 0xb8b27e0824dc37e81dfdf76f5360fe6af4d506a046365f497e33968c055d6679
2. 0x28d40ac443a7640d0f7a71308d2d2a05bfbd94550c840543538c2832e9c77cbf
3. 0xd1e5d34faf21d7298dd3a72a47ce1f8d34827bb41bc3aebfe92ec332051d70f9
4. 0x2b4facbd395aff80680c134e8e454eefc4b1aed992e1a6509f865e6c8fe7eb41
5. 0x2887b9dd6b0b30387f1c0af1fefab111ca2147818182f50d147e8dab9f9f7553
6. 0x611f131c122b8767051e3d71c1e666dc0434bdbe16936028101edfd4f67c146d
7. 0xcee5921d577670f8803b7337ce2f4c9cea2945e115081c15caf98c3cfb239248
8. 0x3bb49657ba9f9874d29731256da0cb43dc3a56093998f316a5a1c44770aa9e94
9. 0x3e22965437ad0de1b511721c0d328319e39da6fec796fed49f0bbfb4d3539221
10. 0x258835beede438ebebc963b639363480e6d4ea3839ccb62aeaaad82cefc2fe04
11. 0xcf50b54d8921f0c22877e0b8d6b8393a1954218f000f7cac374e9f40a024f700
12. 0xb6efd79902cac6d5a402ebecb8069402f00961ab80cd71b4d647fbc686d975ec
13. 0x2f43fe2b2533a5f40c107c114e458e226102f5f8ae91f097e964345880e30928
14. 0xf692ce2b0a640ec9f75aa960e5fb1c2c7091a04e24881798735752c19014e519
15. 0x9f68b5e15459cb62b8c0cd4c124fa61c74147b4a5755a200fbecd21a581635d1
16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae