Evidence row 452342

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": 4,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-25T23:52:52.022Z"
    },
    "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":"12f2a71356e173fcc3db92374de61aa2d4959403cbfd163fbe187f86b73287fb","id":452342,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793100520611977,"prev":68110,"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. 0x87f3f69060da289ae5e35211957cfcfc01e7633533d053792cfb2485190e62dc
2. 0xb6f356d35de10b806cc7df01dceb05bc5aa0c4e9d0a2bc5a78c70428e56b801c
3. 0x1d7e7fa2944a0517ba7a95a8b4b673c88c8db673623a761bac7cdb1b88f8dd42
4. 0x678e258fa17cd00667697298f15617e0a5206064da070609112e262ccaaf0ff8
5. 0xe4579be65c18c92dd504632da9276d79fce093eb329628bf25860f619607ef29
6. 0x6ca9bba674caf3353f7b1dd864c8c233f76cffefd9b3c9a426cc9c8e71033add
7. 0x7ba52a288f2c6e807b1f5ef91c8ed8b36d3e2399d6779f14afc5afa0230ab2c3
8. 0x5057c6c374ef11e5502b09efdace6b1cfc6a78368caf2dd88b8a1597a844b1e1
9. 0x5954c659015c963e5bda2e53002e3e55f65b788d6a80d7e18eef621848bd341c
10. 0x9dc25a7fda1522dda5d2072e86165df16f49960ad44e48a53e9d50481f9174bc
11. 0x75376c2d4b66495f3289538d2a16eac6d0471b87780b054af7810e758374d02a
12. 0x470f6acef0d823e6f9e5fa35684563c8f27c3d338b165b457171afc3d44d4d86
13. 0x6251e2be57e8d16b82579481d181c265d75096882014489550b74a728741f2f1
14. 0x4964f0806efde5ed25f60da2b45d78cd2e0f07d67e64aad2822f6016ad973c47
15. 0x3c500ec3d3edf0c74b87a6ca8fcd77656bfbe03db3d478bd0c184d0c88839c6b
16. 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4