Evidence row 451993

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": 5,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-19T12:04:22.305Z"
    },
    "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":"1953fb7787db6e89419bb59d96f7fdaabd2f9ae821ceccf0b96f2a3c5d6a193e","id":451993,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793100516906109,"prev":76194,"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. 0xb781c39eb8c28bf60988b035e107824e0fe70ce1a714f06a30a0987b9df1c4ea
2. 0xe6897effba93681e597f2742fe4ec0b2946f18aa218eadef08e67c6bf53605bc
3. 0x772a8ef544e8eb34669985ad729b1587bc004cfe77217cf54511d3fd02e0ff74
4. 0xc0292f1ffc958b42070d5fc0998e311bc4263362f7fac512bd64ad093e5bb143
5. 0xef6df56ce2b6e30375ec69caa052912667fcc80f7eea6efafa506114e8f1dbf1
6. 0x425a0622508aeeeef5d39bd4f359bded9276bdfb06eebdddc2294f15cae4efcc
7. 0xd6d8dec8a9ed878dba6b91f4ace586f6cac85aeb1eddfc75af05b661cbd0a2f4
8. 0xedb16c2e14580105898f1f51a49c3b52038ba11085108bb786e0249aeaa4cdfe
9. 0x5c2c0257d9757a0e016d149b3510c7c606eab3ee4f1b25e54a124a0540cdca7e
10. 0x02133db96760e2e6d897f4d0eff0f4476cf1e8a3095578b8101d2f9b45723c18
11. 0x0bd5c4ee0536ff6471a0f1a8676a731f2caf5d42f515ae40fa5d82310634e537
12. 0xdc4af1861bcc27178db9854c119413a3d8acb113ca467e0eb6c0cadd8a60ba5d
13. 0xdb8e341e9690aa686b29432c7b868b3859fb692c3ae3a679b8bc1219ebe3a597
14. 0x87cb8935612c40b569de008a9bf8218cd24a06f74a7364a1654613d972fe00ed
15. 0xec7bb68216a4deb1960acfbbd75da88f7e468b58adb9cf3ec62f2790e46508b3
16. 0x64c405a28e8819716221eb2529fe4ce277ab08025e17e685cbd5ece75ceb75c7
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4