Evidence row 123606

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://usaref.dev/v1/certified/:country/:series"
    ]
  ],
  "name": "Usaref - N America reference",
  "owner_address": "0x1f0409ccd20a2fb497d4decef4e17e9d0688fea6",
  "raw": {
    "accepts": [
      {
        "amount": "100000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x1F0409ccD20A2fb497d4DeCeF4E17e9d0688FeA6",
        "scheme": "exact"
      }
    ],
    "description": "Mexico: IVA standard rate, cited JSON with source URL, effective date and last_confirmed. GET /v1/mx/vat.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {},
            "type": "http"
          },
          "output": {
            "example": {
              "country": "MX",
              "effective_from": "2014-01-01",
              "last_confirmed": "2026-10-16",
              "series": "vat",
              "source": {
                "name": "Ley del Impuesto al Valor Agregado, Artículo 1o. (texto vigente, Orden Jurídico Nacional — Segob",
                "url": "http://www.ordenjuridico.gob.mx/Documentos/Federal/html/wo22.html"
              },
              "unit": "percent",
              "value": 16
            },
            "type": "json"
          }
        },
        "routeTemplate": "/v1/certified/:country/:series",
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "additionalProperties": false,
                  "properties": {},
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "description": "Cited series value (JSON)",
              "properties": {
                "country": {
                  "type": "string"
                },
                "last_confirmed": {
                  "type": "string"
                },
                "series": {
                  "type": "string"
                },
                "source": {
                  "type": "object"
                },
                "stale": {
                  "type": "boolean"
                },
                "unit": {
                  "type": "string"
                },
                "value": {}
              },
              "type": "object"
            }
          },
          "required": [
            "input",
            "output"
          ],
          "type": "object"
        }
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1792873785/bazaar-icons/c589509d7f7c71f9.png",
    "lastUpdated": "2026-10-24T20:34:04.481Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-24T20:34:03.345Z"
    },
    "resource": "https://usaref.dev/v1/certified/:country/:series",
    "serviceName": "Usaref - N America reference",
    "tags": [
      "vat",
      "mexico",
      "reference-data",
      "tax",
      "gst"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Mexico: IVA standard rate, cited JSON with source URL, effective date and last_confirmed. GET /v1/mx/vat."
}

What the leaf hashes

{"body":"fb013a07911f3ec0a5714ab67516313e8f05236be39e8a7f8e753100799a188e","id":123606,"kind":"listing","method":"baseline/1","observed_us":1793025623372983,"prev":null,"subject":"x402_bazaar:https://usaref.dev/v1/certified/:country/:series","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. 0xdf1d2ecb01618d8491ffe72d2cfb8ae0aff777e98edcbcb18fe13a10c78e4391
2. 0x575133b77d426cdf73ee0031391fdb714d1bf3bfee471f73b49e55c4ba86301b
3. 0x7131b2812d97f8fc714e368f38fa6e899eefd3ad785d6d714d68b523470ac85d
4. 0xd5ee548d1de884e939b62a3670f4650d474894143f30bca0211cb740716c0527
5. 0xc8363de76cc61019b7d9e6eb06ce2193ef50602253bfb82ee907f29d1d6826eb
6. 0x5cbb55c9c5bd7930b4e2f35f76570125b55d88dffe3ddf7f32a5703152962f68
7. 0xb943baa657bf4175722e3995a82eca6da74ea443ebd05312a60506efa1a20c60
8. 0x70bb815ff73d1e24a4213cb010c0f900ad15938a58da505625a60b1d37da924c
9. 0x878d58b7097597259107a894acf1838d778528cbef61c4d374b0d2654047d5a9
10. 0x764523acbc3434e3b97373c0b9f5a3550e21809fcde5d63c1823d30371921429
11. 0x81e0a64a684968fee123ac8017e882fda3952628b73684e4b974157cf7552f06
12. 0x1cde596bd397df62b2525df79e5a761af7d1a292cbcfd283ea8977aecf9334e7
13. 0x3fcdf7fa32ccefe771eb57ae3015142065d64e3ce732fea7d11b9a3c99dde44f
14. 0x0b7541c75cc482a7134110311d7dbd02095d969ba21177de9b21a52a55981718
15. 0x6dc40f983a3840a0ad927a9ca17f4ff1e3b649a6c735e2a09b140db7c2caf13b
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae