Evidence row 527268

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.postcodecontext.uk/api/v1/compare"
    ]
  ],
  "name": "Postcode Context UK",
  "owner_address": "0x8ab7568ac097523e81a94644235fcf19a2b85670",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x8ab7568ac097523e81a94644235fcf19a2b85670",
        "scheme": "exact"
      }
    ],
    "description": "POST /api/v1/compare - Multi-Postcode Comparative Demographic Synthesis (2 to 5 postcodes side-by-side comparative analysis and affluence ranking)",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "postcodes": [
                "SW1A 1AA",
                "BB7 3BB"
              ]
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "comparison_synthesis": {
                "ai_comparison_summary": "SW1A 1AA commands higher property prices per sqm and high affluence (94 vs 64), while BB7 3BB (Dunsop Bridge, centre of Great Britain) offers lower entry costs and lowest crime (Decile 10).",
                "best_value_per_sqm": "BB7 3BB",
                "fastest_broadband": "BB7 3BB",
                "most_affluent": "SW1A 1AA",
                "safest_crime_decile": "BB7 3BB"
              },
              "postcodes": []
            },
            "type": "json"
          }
        },
        "routeTemplate": "/api/v1/compare",
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "postcodes": {
                      "default": [
                        "SW1A 1AA",
                        "BB7 3BB"
                      ],
                      "description": "Array of 2 to 5 UK postcodes to compare side-by-side",
                      "items": {
                        "type": "string"
                      },
                      "maxItems": 5,
                      "minItems": 2,
                      "type": "array"
                    }
                  },
                  "required": [
                    "postcodes"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "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": "2026-10-27T09:22:47.077Z",
    "quality": {
      "l30DaysTotalCalls": 6,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-27T09:22:46.88Z"
    },
    "resource": "https://api.postcodecontext.uk/api/v1/compare",
    "serviceName": "Postcode Context UK",
    "tags": [
      "uk-postcode",
      "demographics",
      "property",
      "census",
      "geospatial"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "POST /api/v1/compare - Multi-Postcode Comparative Demographic Synthesis (2 to 5 postcodes side-by-side comparative analysis and affluence ranking)"
}

What the leaf hashes

{"body":"ea4fa8caf3c9713fafb9959af7948fa2ae16996cc9e022e3d32e10ceb590e20e","id":527268,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793124796438938,"prev":452343,"subject":"x402_bazaar:https://api.postcodecontext.uk/api/v1/compare","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. 0xe715526cc0791cbc4fa9495b191b298a5b3e3aa2b36b245df744b796c353bdfe
2. 0x503afd0e26a80c2aa6f6136133169a6590cf68176f42449b878ec83fe21d5c36
3. 0x7d06251a01bb54c59e7f6c12944092b16220de5608e39f361168f49773d2c53e
4. 0xac8df4464a45d853d5f8b6592a529aa27c9258dde28ed12a14d03db06a05a3b1
5. 0x3015e506fd4a8687f5a509059353b465257be1e96a2c794467fbcb375181b8fe
6. 0x2591c860c350fdce6263253a8ee19675377429a8cdd2760d021b9c534787b705
7. 0xf992906ab32791b1a84bfef0f01181c88885b06bc56fbf33fa50b349777a5caf
8. 0x4e83f422d4de4e1b87da4991fbfd7cc1bb900d0d3327e72deb2e9c7c8992cca3
9. 0x2cb9c37da551f614e3e1e95f719893eb04e9b2206546035e434bccf4ee25fe9b
10. 0xae45a0b127be15a79b0a29d4da96c66c7de866604dc96ff1ebad427f8e281dce
11. 0x71c8691e7266a630f55422792837d4ddf268c83444f68d63c646c42b70b5ded5
12. 0x4f9b484326a98846a2342f967ce1e64ee9fa304288bb4355ab666475eb77b61c
13. 0xab6eb305329046d5ccb835dd8ca955f794e3ca110379a94dbdc780d016448561
14. 0x41f9f462759cb539183e979fb3eb967d94755cf039c44a64a9a3c4ad97523cfd
15. 0x56f7109d4cde42492651beb1237c13cdcbf95e6fee2b2482391a2388e04c4629
16. 0x8745bd887f5ce9f7a49558fd2b04cdcd97a05ea9f8a23f62d0e80cb13d328b0f
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4