Evidence row 74391

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://econdash.org/api/v1/m2m/timeseries/world_bank__gdp_nominal/top-countries"
    ]
  ],
  "name": "econdash.org/api/v1/m2m/timeseries/world_bank__gdp_nominal/top-countries",
  "owner_address": "0x39e10e5f431b26cae3d7d0a39aef86055d015d8c",
  "raw": {
    "accepts": [
      {
        "amount": "20000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "resource": "https://econdash.org/api/v1/m2m/timeseries/world_bank__gdp_nominal/top-countries",
          "version": "2"
        },
        "maxTimeoutSeconds": 180,
        "network": "eip155:8453",
        "payTo": "0x39E10E5F431B26cae3D7D0A39aeF86055d015d8c",
        "scheme": "exact"
      }
    ],
    "description": "EconDash economic data API (M2M)",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "limit": 10,
              "year": 2024
            },
            "type": "http"
          },
          "output": {
            "example": {
              "data": [
                {
                  "country_name": "United States",
                  "date": "2023-01-01",
                  "iso3_code": "USA",
                  "value": 27360000000000
                }
              ],
              "indicator_code": "world_bank__gdp_nominal",
              "unit": "current US$"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET",
                    "HEAD",
                    "DELETE"
                  ],
                  "type": "string"
                },
                "pathParams": {
                  "properties": {
                    "code": {
                      "description": "Indicator code, e.g. world_bank__gdp_nominal",
                      "type": "string"
                    }
                  },
                  "required": [
                    "code"
                  ],
                  "type": "object"
                },
                "queryParams": {
                  "properties": {
                    "limit": {
                      "description": "Number of top countries to return",
                      "maximum": 50,
                      "minimum": 1,
                      "type": "integer"
                    },
                    "year": {
                      "description": "Rank by the latest observation in this calendar year",
                      "type": "integer"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-22T10:38:28.765Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-22T10:38:28.312Z"
    },
    "resource": "https://econdash.org/api/v1/m2m/timeseries/world_bank__gdp_nominal/top-countries",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "EconDash economic data API (M2M)"
}

What the leaf hashes

{"body":"9391a910700aa2e80c8a41c6d4d999457c34d9fafab87d19a319ead78c0806fc","id":74391,"kind":"listing","method":"baseline/1","observed_us":1793025489031624,"prev":null,"subject":"x402_bazaar:https://econdash.org/api/v1/m2m/timeseries/world_bank__gdp_nominal/top-countries","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. 0xc8dca7c18d21f1056d3481a4d4e17bbbff0e7759a119a4c40dd1021d91a29833
2. 0xef24e076cc93fdb9688c2f9438cc1fbaa838d6646e93e328dd0d104b3f351791
3. 0x1441c5e23e813b8740ed392089c99db0e076108bbb540b2ae4e463db2fa5d4a9
4. 0x7ecdaac774cbcf8c9d31a4c1662a11845672d15bd1e50089238099fd163c50ba
5. 0x88c46f5c781d9a42074a8116aa559dc8142e50a2081427030411841a45d73f37
6. 0x98f009941de90f1fc95cb49fe7f2a6ef3ca4fc9884385da62f990fc66a01d7ba
7. 0x915ef2e1d3e7d972c4522d28a33c0af57a14b340d687953a6bcf1e5f22d311ca
8. 0x7a0f376eee4f1fa97bdb1e09cff681d3eaa63959645436b402e66be4d3104630
9. 0x5edd226db42fed876a44f79f37937484c5fb73b7666e620e2459bde9f174bca7
10. 0x99b83a0d8096cc6e79ca10fec0381f61738bb5a26cb8d4668d93598ea82a302a
11. 0xde080106ffe5b9071b2505ae31b17f7da4d3a9c7f4f4d9819f700d720702beeb
12. 0xde09984239f27618a13932caf48f5d39831fc5021500b0581dce0dabd570bd6e
13. 0x72e35aac89ebca631656c2b1aecbdc094807d9807f12c22a6ddf35cc1f5e21d6
14. 0x5b20d8aab05225a3497eadcce89d2e2a586a510fb31334793d3f46f88f0157c5
15. 0xe94ca5b798e9899ad611e57835af42266e20f53f44977e487d81365e30972beb
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae