Evidence row 685

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://airport.openverbs.com/v1/airport"
    ],
    [
      "x402",
      "https://airport.openverbs.com/v1/nearest"
    ],
    [
      "x402",
      "https://airport.openverbs.com/v1/search"
    ]
  ],
  "name": "airport.openverbs.com",
  "owner_address": null,
  "raw": {
    "caip2_networks": [
      "eip155:8453"
    ],
    "category": "",
    "description": "",
    "domain": "airport.openverbs.com",
    "endpoints": [
      {
        "description": "Look up an airport by its 3-letter IATA code or 4-character ICAO code. Provide exactly one. Returns the airport name, both codes, city, country, coordinates, elevation and type.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "SFO",
            "group": "body",
            "name": "iata",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        },
        "serviceName": "Airport lookup by IATA/ICAO code",
        "tags": [
          "airport lookup",
          "iata code lookup",
          "icao code lookup",
          "airport by code",
          "airport code api"
        ],
        "url": "https://airport.openverbs.com/v1/airport"
      },
      {
        "description": "Find the airports nearest to a latitude/longitude, ordered by great-circle distance. Optionally cap the search radius (km), result count and airport type. Returns each airport with its distance in km.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": 1,
            "group": "body",
            "name": "lat",
            "required": false,
            "type": "number"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": 1,
            "group": "body",
            "name": "limit",
            "required": false,
            "type": "number"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": 1,
            "group": "body",
            "name": "lon",
            "required": false,
            "type": "number"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": 1,
            "group": "body",
            "name": "radiusKm",
            "required": false,
            "type": "number"
          }
        ],
        "pricing": {
          "amount": "0.004",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "3",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "Nearest airports to coordinates",
        "tags": [
          "nearest airport",
          "closest airport",
          "airport by coordinates",
          "airport near lat lng",
          "find nearby airports"
        ],
        "url": "https://airport.openverbs.com/v1/nearest"
      },
      {
        "description": "Fuzzy-search airports by name, city or code, optionally filtered by ISO country code or airport type. Matches are ranked exact-code/name then prefix then substring, larger airports first. Empty result is a successful 200.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "US",
            "group": "body",
            "name": "country",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "San Francisco",
            "group": "body",
            "name": "query",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "large",
            "group": "body",
            "name": "type",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        },
        "serviceName": "Search airports by name or city",
        "tags": [
          "airport search",
          "find airport by name",
          "airport by city",
          "search airports",
          "airport name lookup"
        ],
        "url": "https://airport.openverbs.com/v1/search"
      }
    ],
    "enriched": false,
    "iconUrl": "",
    "id": "airport-openverbs-com",
    "integrationType": "",
    "isNew": false,
    "name": "airport.openverbs.com",
    "networks": [
      "Base"
    ],
    "priceSummary": {
      "avgCostBasis": "exact",
      "avgCostPerTransaction": "0.002667",
      "currency": "USDC",
      "maxAmount": "0.004",
      "minAmount": "0.002"
    },
    "provider": "airport.openverbs.com",
    "providerUrl": "",
    "serviceName": "",
    "tags": [
      "airport lookup",
      "iata code lookup",
      "icao code lookup",
      "airport by code",
      "airport code api",
      "nearest airport",
      "closest airport",
      "airport by coordinates",
      "airport near lat lng",
      "find nearby airports",
      "airport search",
      "find airport by name",
      "airport by city",
      "search airports",
      "airport name lookup"
    ]
  },
  "source": "agentic_market",
  "summary": ""
}

What the leaf hashes

{"body":"f6d3114fd3da92cb67bd2e079f3a5273eea55d740d4aac963296fe6e842f9411","id":685,"kind":"listing","method":"baseline/1","observed_us":1793025235652696,"prev":null,"subject":"agentic_market:airport-openverbs-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. 0x275d445a327a617044102dbeb9c8aa55575e38d4bc2e37fb25ab2d450eff6863
2. 0xf3df5be59d2ff98f48408339c2d00b2f34df94323e495ea3b801cf06da4eb1ff
3. 0x763bc327c8dc7d5887b7060fb9b445c1eb1ae5444990f9cdcf1cf7c216e34f21
4. 0xfce516da867efe58176a516c7718622326074138aa0ceb76fe8e7a5ef36f82ff
5. 0x5ae0e40b137342ca35650b0fa1c7b4573077d0a02bd5b822df4b63cdb1355d37
6. 0x06bfd3e5bf997af3c19af0b8e11b41b215dee9c5b9c35a74c017a501f51bb0e9
7. 0x990606b1aee9eefc0e1a9837692fe3d3ee7135df1013eaf15c3efd9a7dc62015
8. 0x62765b261405b43eb2038e45d0ede0335585847ea8c6c81566a645fff0163557
9. 0x2e13a50b0d4495d66542865920f1e87b8b0f2575be78c31e0f22dc5a318efb26
10. 0x471a949e3f120f159739bb01e9191ffabe99262f41106795f5abc927d2337558
11. 0x4052d44b5530fb76c2eaae6028a8353bb8a3d80e4775a2c7996dfad1e2cad4af
12. 0x364047261f51ecdbe278514b4f415358118ef4644f7124e15a40f80a86f6a05b
13. 0x16a8fb19a5e4f4535e7cb3fce5c15ecfa188586bb74e347ee71164f8af27dfe1
14. 0xd843afcced75dedd39194ff9bd12326b88099e6112686db2299392d022dc3146
15. 0xc3a6a3ae44ec0da1848b16d40c45d7aac97a67352eea8df18e0f26edabea8a2f
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae