Evidence row 117699

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://opendata402.com/v1/ecb/series"
    ]
  ],
  "name": "opendata402",
  "owner_address": "0x295aa6c5a3460a0f8755823c8ee7bbc7caf79fb1",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 30,
        "network": "eip155:8453",
        "payTo": "0x295AA6c5a3460A0f8755823C8eE7bBC7CAf79fb1",
        "scheme": "exact"
      },
      {
        "amount": "1000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 30,
        "network": "eip155:137",
        "payTo": "0x295AA6c5a3460A0f8755823C8eE7bBC7CAf79fb1",
        "scheme": "exact"
      },
      {
        "amount": "1000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 30,
        "network": "eip155:42161",
        "payTo": "0x295AA6c5a3460A0f8755823C8eE7bBC7CAf79fb1",
        "scheme": "exact"
      }
    ],
    "description": "Any time series from the ECB Data Portal by flow and series key (e.g. EXR/D.USD.EUR.SP00.A for USD/EUR, FM/B.U2.EUR.4F.KR.DFR.LEV for the deposit rate, ICP/M.U2.N.000000.4.ANR for euro area inflation), last N observations. Use it for euro area rates, money, banking and prices. Note: free of charge at ecb.europa.eu; you pay for access, not for the data.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "key": "EXR/D.USD.EUR.SP00.A",
              "last": "10"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "key": "EXR/D.USD.EUR.SP00.A",
              "observations": [
                {
                  "period": "2026-10-13",
                  "value": 1.1188
                }
              ],
              "title": "US dollar/Euro ECB reference exchange rate"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "key": {
                      "description": "FLOW/SERIESKEY.",
                      "pattern": "^[A-Z0-9_]{2,20}/[A-Za-z0-9_.+]{3,120}$",
                      "type": "string"
                    },
                    "last": {
                      "description": "Latest N observations (default 12, max 500).",
                      "pattern": "^([1-9]|[1-9][0-9]|[1-4][0-9][0-9]|500)$",
                      "type": "string"
                    }
                  },
                  "required": [
                    "key"
                  ],
                  "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": "2026-10-14T22:43:57.644Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-14T22:43:57.255Z"
    },
    "resource": "https://opendata402.com/v1/ecb/series",
    "serviceName": "opendata402",
    "tags": [
      "ecb",
      "time-series",
      "euro",
      "finance",
      "statistics"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Any time series from the ECB Data Portal by flow and series key (e.g. EXR/D.USD.EUR.SP00.A for USD/EUR, FM/B.U2.EUR.4F.KR.DFR.LEV for the deposit rate, ICP/M.U2.N.000000.4.ANR for euro area inflation), last N observations. Use it for euro area rates, money, banking and prices. Note: free of charge at ecb.europa.eu; you pay for access, not for the data."
}

What the leaf hashes

{"body":"bec913f86853162cb668e0b9a6bfeaca448b418ef32bb1b59a8fc92db90d7321","id":117699,"kind":"listing","method":"baseline/1","observed_us":1793025611795673,"prev":null,"subject":"x402_bazaar:https://opendata402.com/v1/ecb/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. 0xa52ed32b18f683c717f7887319997a90b47a8074a91c8e7da5a8c1eaa03ab734
2. 0x933501246cbb57f27dc4e21ff95045a5e636ae827a3fbdce383b042a690d57d1
3. 0xe215ec7f998e9f442a91dde9d718d1643fc51e27c1b7aeb3c82d16400651e401
4. 0x4e34a29ba2760bf22bd7f9e4b66d50b865e53cee771d83da7f6d2695a4eafeaf
5. 0xfe35ab739cb383bfdaf089431a09bd86d61497176887fc61b0a94c533f936eed
6. 0xb0799beb617647b632dd633c733ec579512c1033682a21008da38a3bd2bd6ed7
7. 0xf263c653d1c095bff5af76e20ff1b7509f1f3e4ff37d6c92376b5753387aa7ef
8. 0xf3c62856290db46d79e30752c0510ff671aea0684e82ba446921117cbb8a33ec
9. 0x5b246434376ca0995dd62493e4f2735f98c56a53ad1cb0e51dbfd4862a23a293
10. 0x494d50e7c2a667a94651588fb1c6bae6df468e826359a35ba4b503d878536df7
11. 0xf237135c66ca84b49bee4316c469fc0289ef400162349fc2344fca1bb98dbd0e
12. 0x21725c62783071369e87d9e0abedb3d8cc37bdab8d0d58308c28aeb7cfd2bc8c
13. 0xc34c13c58ba9c342ea1b833ac1882a4aea22777c4fd1092b2f83d3bac6b9f845
14. 0x428106f4ae4ec142f17aebf6fa50935242f8d3f1c211cf95d6351d03d11da2b7
15. 0x62a900133713919f4eed33d8336876b7a6d538233b8a4f3ed03b29aa44f5bad0
16. 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae