Evidence row 1386

Observed 26 Oct 2026, 14:34 UTC, by baseline/1.

Kind: listing
About: source_record agentic_market:api-postcodecontext-uk
Recorded: 26 Oct 2026, 14:34 UTC
Previous row: None: the first of its kind about this subject
Body SHA-256: 4dd22a4dcb012ac7b4b07f8fa5f1e5a2ba6c8dd971a96101f1a4f0f081c28654
Leaf: 0x2d523b5e38c30dc0dc131521c715080b17b275821811820e7c2d084f57382878

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.postcodecontext.uk/api/v1/batch"
    ],
    [
      "x402",
      "https://api.postcodecontext.uk/api/v1/compare"
    ],
    [
      "x402",
      "https://api.postcodecontext.uk/api/v1/outcode/:outcode"
    ],
    [
      "x402",
      "https://api.postcodecontext.uk/api/v1/postcode/:postcode"
    ]
  ],
  "name": "api.postcodecontext.uk",
  "owner_address": null,
  "raw": {
    "caip2_networks": [
      "eip155:8453"
    ],
    "category": "",
    "description": "",
    "domain": "api.postcodecontext.uk",
    "endpoints": [
      {
        "description": "POST /api/v1/batch — Bulk UK Postcode Demographics & IMD Enrichment (1 to 50 postcodes with cohort aggregation and spatial summaries)",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "json",
            "group": "query",
            "name": "format",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "full",
            "group": "query",
            "name": "view",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": [],
            "group": "body",
            "name": "postcodes",
            "required": false,
            "type": "array"
          }
        ],
        "pricing": {
          "amount": "0.05",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "4",
          "l30DaysUniquePayers": "1"
        },
        "serviceName": "Postcode Context UK",
        "tags": [
          "uk-postcode",
          "demographics",
          "property",
          "census",
          "geospatial"
        ],
        "url": "https://api.postcodecontext.uk/api/v1/batch"
      },
      {
        "description": "POST /api/v1/compare — Multi-Postcode Comparative Demographic Synthesis (2 to 5 postcodes side-by-side comparative analysis and affluence ranking)",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": [],
            "group": "body",
            "name": "postcodes",
            "required": false,
            "type": "array"
          }
        ],
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "4",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "Postcode Context UK",
        "tags": [
          "uk-postcode",
          "demographics",
          "property",
          "census",
          "geospatial"
        ],
        "url": "https://api.postcodecontext.uk/api/v1/compare"
      },
      {
        "description": "GET /api/v1/outcode/:outcode — Outward Postal District Summary (district-wide median prices, transaction volume, and dominant affluence tiers)",
        "method": "GET",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "BB7",
            "group": "path",
            "name": "outcode",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.005",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "4",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "Postcode Context UK",
        "tags": [
          "uk-postcode",
          "demographics",
          "property",
          "census",
          "geospatial"
        ],
        "url": "https://api.postcodecontext.uk/api/v1/outcode/:outcode"
      },
      {
        "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)",
        "method": "GET",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "json",
            "group": "query",
            "name": "format",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "full",
            "group": "query",
            "name": "view",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "SW1A 1AA",
            "group": "path",
            "name": "postcode",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.005",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "3",
          "l30DaysUniquePayers": "1"
        },
        "serviceName": "Postcode Context UK",
        "tags": [
          "uk-postcode",
          "demographics",
          "property",
          "census",
          "geospatial"
        ],
        "url": "https://api.postcodecontext.uk/api/v1/postcode/:postcode"
      }
    ],
    "enriched": false,
    "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",
    "id": "api-postcodecontext-uk",
    "integrationType": "",
    "isNew": false,
    "name": "api.postcodecontext.uk",
    "networks": [
      "Base"
    ],
    "priceSummary": {
      "avgCostBasis": "exact",
      "avgCostPerTransaction": "0.0175",
      "currency": "USDC",
      "maxAmount": "0.05",
      "minAmount": "0.005"
    },
    "provider": "api.postcodecontext.uk",
    "providerUrl": "",
    "serviceName": "Postcode Context UK",
    "tags": [
      "uk-postcode",
      "demographics",
      "property",
      "census",
      "geospatial"
    ]
  },
  "source": "agentic_market",
  "summary": ""
}

What the leaf hashes

{"body":"4dd22a4dcb012ac7b4b07f8fa5f1e5a2ba6c8dd971a96101f1a4f0f081c28654","id":1386,"kind":"listing","method":"baseline/1","observed_us":1793025253935213,"prev":null,"subject":"agentic_market:api-postcodecontext-uk","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).
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Day root: 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained: 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published: On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON