Evidence row 526926

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://handelskalender-api.pages.dev/v1/trading-calendar"
    ]
  ],
  "name": "Exchange Trading Calendar",
  "owner_address": "0x896babcda513322af2218fe7346353846835f978",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:8453",
        "payTo": "0x896baBcda513322AF2218fe7346353846835f978",
        "scheme": "exact"
      }
    ],
    "description": "Use when an agent plans ahead and needs every closure of a stock exchange for a whole year: holiday names, half days, late openings, regular hours, count of trading days. 28 exchanges incl. NYSE, Nasdaq, LSE, Xetra, Euronext, SIX, Tokyo, HKEX, Shanghai, ASX. Official exchange calendars only; bad input or uncovered year: HTTP 400, no charge.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "exchange": "XNYS",
              "year": "2026"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "closed": [
                {
                  "date": "2026-01-01",
                  "name": "New Year's Day",
                  "weekday": "Thursday"
                }
              ],
              "coverage": {
                "from": "2026-01-01",
                "to": "2028-12-31"
              },
              "exchange": {
                "country": "US",
                "mic": "XNYS",
                "name": "New York Stock Exchange",
                "timezone": "America/New_York"
              },
              "hoursNote": null,
              "regularHours": {
                "close": "16:00",
                "open": "09:30"
              },
              "sources": [
                "https://www.nyse.com/markets/hours-calendars"
              ],
              "specialSessions": [
                {
                  "close": "13:00",
                  "date": "2026-11-27",
                  "name": "Day after Thanksgiving",
                  "open": "09:30",
                  "weekday": "Friday"
                }
              ],
              "tradingDays": 250,
              "year": 2026
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "additionalProperties": false,
                  "properties": {
                    "exchange": {
                      "description": "Exchange MIC code, e.g. XNYS (NYSE), XNAS (Nasdaq), XLON (London), XETR (Xetra), XPAR (Paris), XTKS (Tokyo), XHKG (Hong Kong). Common names also work (NYSE, Xetra, LSE). Free list: GET /v1/exchanges.",
                      "type": "string"
                    },
                    "year": {
                      "description": "Year, e.g. 2026. Optional, default: current year.",
                      "type": "string"
                    }
                  },
                  "required": [
                    "exchange"
                  ],
                  "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": "2026-10-27T10:07:56.562Z",
    "quality": {
      "l30DaysTotalCalls": 6,
      "l30DaysUniquePayers": 4,
      "lastCalledAt": "2026-10-27T10:07:56.255Z"
    },
    "resource": "https://handelskalender-api.pages.dev/v1/trading-calendar",
    "serviceName": "Exchange Trading Calendar",
    "tags": [
      "stock-exchange",
      "trading-calendar",
      "market-hours",
      "holidays",
      "nyse"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Use when an agent plans ahead and needs every closure of a stock exchange for a whole year: holiday names, half days, late openings, regular hours, count of trading days. 28 exchanges incl. NYSE, Nasdaq, LSE, Xetra, Euronext, SIX, Tokyo, HKEX, Shanghai, ASX. Official exchange calendars only; bad input or uncovered year: HTTP 400, no charge."
}

What the leaf hashes

{"body":"e652c416618642aa60a1d078032d639f4f32d5317065d6fe889cd90d15ef08cb","id":526926,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793124792426451,"prev":451993,"subject":"x402_bazaar:https://handelskalender-api.pages.dev/v1/trading-calendar","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0x7e1ae547f5c963101c87812feda832714550cf3886732bb39fd6edb30b3b4774
2. 0x81628adaf92746efe3ce0d5f1c36ef3889fb82acb840392ded03d4c608d39c95
3. 0xb7d2d91036cb2e64de85d76a2d0166448b0f16a8fce2e9ad3eeaf89852481742
4. 0x0015f0f3852e1cfe4c73b9676b7514cb7836230de2b5d4951e43caf420bd9f73
5. 0x1021c4a9721a2ccb2d38eea4d82cb188e9cd9b5fee1b48264914d1b03f3aa786
6. 0x1c99dfa91c7ab75c08ff30b30fe5125e7c7521107be3d3b75bf427136631c48a
7. 0x281ebbcc6f863243d1f0f6a3a1d98ce10ca879e5b18dd5966facb2efcafdf8b0
8. 0x5e7aaae59c246d868e07165ecb076435e69471e13df748c864307f708a690153
9. 0xaf57fdf4c815c005cf66d6dd7b55f0f660f3a1d2da29804bf2690c603d0fbe2f
10. 0x63d53c86dcace63fcec156d87cf21e38de1aeee0b27dd0c2dcbfbf4a3dd56883
11. 0x868e095a0e024f898de0327309385070aef4560771a159bdc58d9e1c53b28672
12. 0x4b98c7145f5ead65ac9430579969acab10bc70758d3533f5a4fd4dbb462a2b61
13. 0xbc7cf10ae301dcdbc5db5be8c29e1b3618ffaf1c196a74cb6a9e6c4fae0bbeed
14. 0xfa0c8e8f1a1710ff197533b0a28208f2e168afe71abb7bb3416e09d1ac371d60
15. 0x3c500ec3d3edf0c74b87a6ca8fcd77656bfbe03db3d478bd0c184d0c88839c6b
16. 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4