Evidence row 525156

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://canary.countersignpay.com/v1/base/head"
    ]
  ],
  "name": "canary.countersignpay.com",
  "owner_address": null,
  "raw": {
    "caip2_networks": [
      "eip155:8453"
    ],
    "category": "",
    "description": "",
    "domain": "canary.countersignpay.com",
    "endpoints": [
      {
        "description": "Current Base mainnet block height and base fee per gas in wei, read from the chain at request time",
        "method": "GET",
        "parameters": [],
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "14",
          "l30DaysUniquePayers": "8"
        },
        "serviceName": "",
        "tags": [],
        "url": "https://canary.countersignpay.com/v1/base/head"
      }
    ],
    "enriched": false,
    "iconUrl": "",
    "id": "canary-countersignpay-com",
    "integrationType": "",
    "isNew": false,
    "name": "canary.countersignpay.com",
    "networks": [
      "Base"
    ],
    "priceSummary": {
      "avgCostBasis": "exact",
      "avgCostPerTransaction": "0.01",
      "currency": "USDC",
      "maxAmount": "0.01",
      "minAmount": "0.01"
    },
    "provider": "canary.countersignpay.com",
    "providerUrl": "",
    "serviceName": "",
    "tags": []
  },
  "source": "agentic_market",
  "summary": ""
}

What the leaf hashes

{"body":"b4dd7d4c74cea7781d92a9166281d13386d2db6f7747bf5380a1d1cb457e733c","id":525156,"kind":"listing","method":"sync.agentic_market/1","observed_us":1793124752142587,"prev":1790,"subject":"agentic_market:canary-countersignpay-com","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. 0xcd7952481372608dad9f4813aa2a2c8b8604981c855dc06ed2078f6031d5d6f7
2. 0xc75123b6427d0187bad0e719f87fa4721702d9c87df30b0e65da7104180d05a2
3. 0x663f2b6bd38d96ec4845a5a3be923c060e150f7e5a456079917b6fee2e4c6945
4. 0xb4a718256aba31ad03e2f4706b75e966eb01503a2f38b7705bbe91e44dfc2603
5. 0xe60761050d99a0c07ba582cdb4fa2496f2439e8ce1e932d78237dbd646f61774
6. 0x9fc1768eb2235fd50b3cbb7b3490d31cc8e841fa7697846032bf83548e276bc3
7. 0xa546d3c65d45c7caa4ff4d0f6d2ec04557423faf671a1bc3c41d52109683a337
8. 0x49f5d68c1a9fc7e8caa29479da4d86b4eb12f2bc9734fe193bb798c542be0f22
9. 0x69952a1f20a235072f47363543ca4ef9bba308d28872d6ef429a1a4079766234
10. 0xcb52c2419f740ae43dfba57f29f05efee950cf2cc8aef6a5fabe1be0b3842bf8
11. 0xf6faea553d6354c2881afaf6cc13a2f3a8290ee9597618bbe3c61a828c5e4c23
12. 0x6c0803f2d7123e0bcd2a148e9fde0f429f31dc964ced287e760ee656fcd9912f
13. 0xeb77e9d1884bf470f4a13a5869956a83ac37957112a29ccb9e63ddf7791b5a0b
14. 0xcc49fd573532e5a29f5be4033f62a2eff71456c020bd2258312b98e95cfe301e
15. 0x969cd44e5a4e8dc3110540398fbf689659eb51df735c1cda5d8f021ef9ff5683
16. 0xa94627de1af0e823832e05a9069b304ecccb8c0cdb8f9cfc4f2039bfb9799dc5
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4