Evidence row 451994

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://handelskalender-api.pages.dev/v1/market-status"
    ]
  ],
  "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 needs to know right now which stock exchanges are open: open, lunch break, pre-market, after-hours or closed (with holiday name), local time, exact next open and close in UTC. One call checks up to 28 exchanges (default all) incl. NYSE, Nasdaq, LSE, Xetra, Euronext, Tokyo, HKEX, Shanghai, ASX. Official exchange calendars only; unknown exchange: HTTP 400, no charge.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "exchanges": "XNAS,XETR"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "checkedAt": "2026-10-08T15:45:00.000Z",
              "exchanges": [
                {
                  "holiday": null,
                  "isTradingDay": true,
                  "localDate": "2026-10-08",
                  "localTime": "11:45",
                  "mic": "XNAS",
                  "name": "Nasdaq Stock Market",
                  "nextClose": "2026-10-08T20:00:00.000Z",
                  "nextOpen": "2026-10-09T13:30:00.000Z",
                  "status": "open",
                  "timezone": "America/New_York"
                },
                {
                  "holiday": null,
                  "isTradingDay": true,
                  "localDate": "2026-10-08",
                  "localTime": "17:45",
                  "mic": "XETR",
                  "name": "Xetra (Deutsche Börse, Frankfurt)",
                  "nextClose": "2026-10-09T15:30:00.000Z",
                  "nextOpen": "2026-10-09T07:00:00.000Z",
                  "status": "after-hours",
                  "timezone": "Europe/Berlin"
                }
              ]
            },
            "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": {
                    "exchanges": {
                      "description": "Comma-separated MIC codes or names, e.g. XNYS,XETR,XTKS. Optional, default: all exchanges.",
                      "type": "string"
                    }
                  },
                  "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": "2026-10-27T10:07:54.636Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-18T02:56:43.328Z"
    },
    "resource": "https://handelskalender-api.pages.dev/v1/market-status",
    "serviceName": "Exchange Trading Calendar",
    "tags": [
      "stock-exchange",
      "market-status",
      "market-hours",
      "is-market-open",
      "pre-market"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Use when an agent needs to know right now which stock exchanges are open: open, lunch break, pre-market, after-hours or closed (with holiday name), local time, exact next open and close in UTC. One call checks up to 28 exchanges (default all) incl. NYSE, Nasdaq, LSE, Xetra, Euronext, Tokyo, HKEX, Shanghai, ASX. Official exchange calendars only; unknown exchange: HTTP 400, no charge."
}

What the leaf hashes

{"body":"3cf78e1f582016d43534d01b637dc4ae76739a9ab8c46738df0b59c11e558d33","id":451994,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793100516908699,"prev":76193,"subject":"x402_bazaar:https://handelskalender-api.pages.dev/v1/market-status","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. 0x07fed013917828204523fff903e11224ed0051983fe32786612269e00091d044
2. 0x803171583c019df9645d14032b40139fa4588d50b2b3fb0dde151fb64aa25e72
3. 0xb7494019d9c4608d675f029b2a59d267585cd49f11ddde37f3e62ffa1f5717d6
4. 0x4b88c52f2843a41867f91de64736ede3d3badae4b155715537ffcda00c5d56e5
5. 0x67e4e7ef6032fc88fbd2e7a2c4f4b63d10b0337a632961f48b57e5dae1835685
6. 0x541adfb8308332a1d67e7d1c0fdcedbc780e2382c1a5f1bc80b929f74ec90d2b
7. 0x40279173a72c41749d5c43dd6239b862809c7f30f5aa8976f691ef1a7825528b
8. 0x10d0b73815b409a69515c3019cba50abcc5822316dae9385e87c619c8757ef05
9. 0xb2e39e06a7b16042f70cb7a771255e24721c9d9c2a3e1822ed70f41cb606d2bf
10. 0x86f0394422ce304f6d19bc08db2c67189ede4735d6496d0a633e1a055951a6b2
11. 0x32ff11116925d4f6cb886f2b10aaee347411638da7594e1a01520f7289fefe5e
12. 0x032ecda033bf8a986e559148b1dda067c67bf4dee01f0000782b450c72286406
13. 0x74ffd6144e8464591ea30392b981f197426cfd361178829fb8a66915e2f727b0
14. 0x3e0ec8a2a8a954695a9b53a4a48a7656d7e3fd6a8795c73b49e2ef05b201ec3f
15. 0x2cf27e8a181d60d0dd27c186c2eddfcbb4e8fa71cf66feeb55a4d730e15ee8c4
16. 0x518b93854db03dc9fc938883abf30da6eaae5ae0d4336903968fd32a7df8c71b
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4