Evidence row 852

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.coregroupimmo.com/v1/csv/analyze"
    ],
    [
      "x402",
      "https://api.coregroupimmo.com/v1/html/analyze"
    ],
    [
      "x402",
      "https://api.coregroupimmo.com/v1/json/validate"
    ]
  ],
  "name": "api.coregroupimmo.com",
  "owner_address": null,
  "raw": {
    "caip2_networks": [
      "eip155:8453"
    ],
    "category": "",
    "description": "",
    "domain": "api.coregroupimmo.com",
    "endpoints": [
      {
        "description": "Use this service before importing CSV to check data quality: missing cells, duplicate rows, required columns and declared string, integer, number, boolean or date types. Provide raw CSV with unique headers; comma, semicolon and tab delimiters supported. Max 1 MiB UTF-8, 10000 data rows and 100 columns. No URL fetching. Invalid business data returns valid=false.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": [],
            "group": "body",
            "name": "requiredColumns",
            "required": false,
            "type": "array"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "name,age\nAlice,30",
            "group": "body",
            "name": "text",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": null,
            "group": "body",
            "name": "types",
            "required": false,
            "type": "object"
          }
        ],
        "pricing": {
          "amount": "0.003",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "5",
          "l30DaysUniquePayers": "4"
        },
        "serviceName": "CORE CSV Analyzer",
        "tags": [
          "csv",
          "data-quality",
          "validation"
        ],
        "url": "https://api.coregroupimmo.com/v1/csv/analyze"
      },
      {
        "description": "Analyze raw HTML you provide and get structured SEO data as JSON: title, meta description, canonical, H1-H6 outline, links, JSON-LD blocks and structural checks (single H1, heading order, duplicates, JSON-LD validity). Use it to audit a page before publishing. No URL fetching, no JavaScript execution. Max 64 KiB of HTML.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "<!doctype html><html><head><title>Apartment for sale in Aix-en-Provence</title><meta name=\"description\" content=\"Bright 3-room apartment\"><link rel=\"canonical\" href=\"https://example.com/aix-3-rooms\"></head><body><h1>3-room apartment</h1><h2>Features</h2><a href=\"/contact\">Contact</a></body></html>",
            "group": "body",
            "name": "html",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.003",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "3",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "CORE HTML SEO Analyzer",
        "tags": [
          "seo",
          "html",
          "audit",
          "json-ld"
        ],
        "url": "https://api.coregroupimmo.com/v1/html/analyze"
      },
      {
        "description": "Use this service before importing or publishing JSON to check it against a restricted draft-07 schema. Send dataJson and schemaJson as JSON-encoded strings. Max 256 KiB UTF-8 each, depth 32; bounded node and work limits. Supports types, required properties, items, enums and numeric/length bounds. No regex, combinators or external references. Invalid business data returns valid=false.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "{\"age\":30}",
            "group": "body",
            "name": "dataJson",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "{\"type\":\"object\",\"properties\":{\"age\":{\"type\":\"integer\"}},\"required\":[\"age\"]}",
            "group": "body",
            "name": "schemaJson",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "7",
          "l30DaysUniquePayers": "5"
        },
        "serviceName": "CORE JSON Validator",
        "tags": [
          "json",
          "schema",
          "validation"
        ],
        "url": "https://api.coregroupimmo.com/v1/json/validate"
      }
    ],
    "enriched": false,
    "iconUrl": "",
    "id": "api-coregroupimmo-com",
    "integrationType": "",
    "isNew": false,
    "name": "api.coregroupimmo.com",
    "networks": [
      "Base"
    ],
    "priceSummary": {
      "avgCostBasis": "exact",
      "avgCostPerTransaction": "0.002667",
      "currency": "USDC",
      "maxAmount": "0.003",
      "minAmount": "0.002"
    },
    "provider": "api.coregroupimmo.com",
    "providerUrl": "",
    "serviceName": "CORE",
    "tags": [
      "csv",
      "data-quality",
      "validation",
      "seo",
      "html",
      "audit",
      "json-ld",
      "json",
      "schema"
    ]
  },
  "source": "agentic_market",
  "summary": ""
}

What the leaf hashes

{"body":"133b93b746a8dcdfbfb114e19decafd77909bc9bc41cc85928c5a82de06433fc","id":852,"kind":"listing","method":"baseline/1","observed_us":1793025240731104,"prev":null,"subject":"agentic_market:api-coregroupimmo-com","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. 0x07158e6c67806b18fc77d844d75a88f1251243607b5faf6d87ac9fac3d4a4c0e
2. 0x92aebbb0a5458271e8ab6b1690194a98f66d7a2b229f27f63a42d736c05ab520
3. 0xb0cada84a454b57a50fdcda760c6800a3779d52bf0f296e9f5793590057431d9
4. 0xa9b3ec8c2700a37da0c07ae2d1f8ffdce43d26f45b9ee6f06f9cbd86ab5dbfe4
5. 0x14859b425523b0a0c218fd7401f4aea6002ceb29b3786313fa8d2fc37456e48b
6. 0x070575d232bb155901a7d346c914f12b74af3d45f54d4c5a3c8a70a190c43fd0
7. 0xb0ad713fe94d5f3a13f9bdd9692b0a56c3ba9a76bde97240bf8008677a58aa23
8. 0x2368a19e0c0dfac25253628f958854f15afc6c56259475eddfeb2f42560e8bf5
9. 0xe58a7bfbcf7ee0d09cdd1c9633a76e0cb7f5d22098bb0135fe0fd6c148c481b4
10. 0x9a948adeab9018ec5a898e396ee4bd686403fcc757d5eaa65da65f42603cb55c
11. 0xdd6d5f87470c9b64b375ecc2fb3ff4a65fedf3d6a0bd40f365da40a6a41b103d
12. 0x7910a200eb458bec3c3badb3b2ead3e75cec5f3ba263800cea6b9f32efb53f25
13. 0x610fdf3e989af0a6b4a400a3a8aab9156d757f8c96efe4e9d0594dfd04de1cc0
14. 0xd1d3499072edb10edc68f84bcae2365d2ab534df689250cab18c751b6f13b6ff
15. 0x7ddc2fead128357f881b63e6c7c26d7fbbb84fca6c7c8e0bbfe386de86ca8d39
16. 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae