Evidence row 525751

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://handelskalender-api.pages.dev/v1/market-status"
    ],
    [
      "x402",
      "https://handelskalender-api.pages.dev/v1/trading-calendar"
    ],
    [
      "x402",
      "https://handelskalender-api.pages.dev/v1/trading-day"
    ]
  ],
  "name": "handelskalender-api.pages.dev",
  "owner_address": null,
  "raw": {
    "caip2_networks": [
      "eip155:8453"
    ],
    "category": "",
    "description": "",
    "domain": "handelskalender-api.pages.dev",
    "endpoints": [
      {
        "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.",
        "method": "GET",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "XNAS,XETR",
            "group": "query",
            "name": "exchanges",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "4",
          "l30DaysUniquePayers": "3"
        },
        "serviceName": "Exchange Trading Calendar",
        "tags": [
          "stock-exchange",
          "market-status",
          "market-hours",
          "is-market-open",
          "pre-market"
        ],
        "url": "https://handelskalender-api.pages.dev/v1/market-status"
      },
      {
        "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.",
        "method": "GET",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "XNYS",
            "group": "query",
            "name": "exchange",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "2026",
            "group": "query",
            "name": "year",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "6",
          "l30DaysUniquePayers": "4"
        },
        "serviceName": "Exchange Trading Calendar",
        "tags": [
          "stock-exchange",
          "trading-calendar",
          "market-hours",
          "holidays",
          "nyse"
        ],
        "url": "https://handelskalender-api.pages.dev/v1/trading-calendar"
      },
      {
        "description": "Use when an agent needs to know if a stock exchange trades on a given day (default today) before scheduling orders, reports or alerts. 28 exchanges incl. NYSE, Nasdaq, LSE, Xetra, Euronext, SIX, Tokyo, HKEX, Shanghai, ASX. Returns holiday name, hours in local time + UTC, half days, lunch breaks, pre/after-market (Nasdaq, Xetra), live status, next open/close, previous/next trading day. Official exchange calendars only; bad input: HTTP 400, no charge.",
        "method": "GET",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "2026-10-26",
            "group": "query",
            "name": "date",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "XWBO",
            "group": "query",
            "name": "exchange",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "10",
          "l30DaysUniquePayers": "6"
        },
        "serviceName": "Exchange Trading Calendar",
        "tags": [
          "stock-exchange",
          "trading-calendar",
          "market-hours",
          "holidays",
          "nyse"
        ],
        "url": "https://handelskalender-api.pages.dev/v1/trading-day"
      }
    ],
    "enriched": false,
    "iconUrl": "",
    "id": "handelskalender-api-pages-dev",
    "integrationType": "",
    "isNew": false,
    "name": "handelskalender-api.pages.dev",
    "networks": [
      "Base"
    ],
    "priceSummary": {
      "avgCostBasis": "exact",
      "avgCostPerTransaction": "0.002",
      "currency": "USDC",
      "maxAmount": "0.002",
      "minAmount": "0.002"
    },
    "provider": "handelskalender-api.pages.dev",
    "providerUrl": "",
    "serviceName": "Exchange Trading Calendar",
    "tags": [
      "stock-exchange",
      "market-status",
      "market-hours",
      "is-market-open",
      "pre-market",
      "trading-calendar",
      "holidays",
      "nyse"
    ]
  },
  "source": "agentic_market",
  "summary": ""
}

What the leaf hashes

{"body":"aefbfb67102b89c54deff955f2bca2707920e9d07e4dc3be064c6ac8bb33f96e","id":525751,"kind":"listing","method":"sync.agentic_market/1","observed_us":1793124765428233,"prev":2527,"subject":"agentic_market:handelskalender-api-pages-dev","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. 0xb1928a0c1b0297afade396143b6e92940582e36a59d74cd61e43912930880de2
2. 0x91e0cc1130fa1007f700a26a55c534ead60077e04580548883754e7c3393d0cf
3. 0x0363e61ccaef5c592e9c9673e0a9a9cc2a26b0866def364276c596ebd10c3416
4. 0x510335c6a840fec5951f64b169274ee1a0c7eac7a21e178f209843ef76d7d08f
5. 0x40c6c6cb48794f04a50e59f6b8c285cd799a36bf85adf1edfb20718b0b3427ac
6. 0x9262b2cfaf6e4b22a721a34e03a3a0884aede1c8be31f557e10403397ee98cfe
7. 0x4199a0c780d540e68bbab96b92f5c5cea1add8cd5047e19ec46a0da208deb025
8. 0x2ef85f093c9327981e1d97be0c18b393e35107d38fe22dc08b4c66e5afbb1ad8
9. 0x45ce7ebebec68b345d938c6134ebf5da0aee19fd456ba74e2540cad9b58273fc
10. 0x375e2b9e7d51d57cd80f1102ac234b2622613d6183cd3ee46f4328ffc28f458c
11. 0xd1a9e8a17c2c3a118d3b406bbe49f0e2c50cfd03c0e6b4125e82eb782af3a286
12. 0x2d136d228d8bf54a46835cf3532884988271b7ca1e85edf2327300bd225d178e
13. 0xf1104ea7df082465ff9df25ed29be80a0ac7c1c6b25c289b5d2e6ae5e6331952
14. 0x87cb8935612c40b569de008a9bf8218cd24a06f74a7364a1654613d972fe00ed
15. 0xec7bb68216a4deb1960acfbbd75da88f7e468b58adb9cf3ec62f2790e46508b3
16. 0x64c405a28e8819716221eb2529fe4ce277ab08025e17e685cbd5ece75ceb75c7
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4