Evidence row 2689

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://kertivo.com/address/check/full"
    ],
    [
      "x402",
      "https://kertivo.com/check"
    ],
    [
      "x402",
      "https://kertivo.com/check/deep"
    ]
  ],
  "name": "kertivo.com",
  "owner_address": null,
  "raw": {
    "caip2_networks": [
      "eip155:8453"
    ],
    "category": "",
    "description": "",
    "domain": "kertivo.com",
    "endpoints": [
      {
        "description": "Full-history address-poisoning check before you send USDC on Base. Same risk/lookalike/seenBefore logic as /address/check, but funding history comes from ONE Blockscout index call (x402, up to the sender's 500 most recent Base USDC transfers; v2 page fallback) so coverage is usually the sender's full Base USDC history. Body {from, to}. Not charged if the index is down. Cheap partial/RPC tier: POST /address/check ($0.001).",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "0xfc1e390266f3b29179b5d63a7937a689d1e5279a",
            "group": "body",
            "name": "from",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "0xccd53f97ddfdf6939028698803dfe20fac455d07",
            "group": "body",
            "name": "to",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.005",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "3",
          "l30DaysUniquePayers": "3"
        },
        "serviceName": "Kertivo Shield (full)",
        "tags": [
          "base",
          "usdc",
          "security",
          "address-poisoning",
          "full-history"
        ],
        "url": "https://kertivo.com/address/check/full"
      },
      {
        "description": "Payment verification for x402: verify a USDC transaction on Base — did this payment really settle, and did it pay the right address the right amount? Send a tx hash (or x402 authorization): confirmations, real-USDC transfer check, expectedPayTo/expectedAmount match, fake-USDC and lookalike-address warnings, who funded the payer (external, self_funded, unknown), plain-English summary and a receipt. Body {txHash|authorization, expectedPayTo?, expectedAmount?}. Free demo: POST /demo.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "1",
            "group": "body",
            "name": "expectedAmount",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "0x509E55c4F898B43C856Fb0E51048B1b7bFBC9eDE",
            "group": "body",
            "name": "expectedPayTo",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "0xc37cbdfa44230f05129348d5160254abf354791d79de68228b201ba09de143c1",
            "group": "body",
            "name": "txHash",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "3",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "Kertivo Check: payment verify",
        "tags": [
          "payment-verification",
          "x402",
          "base",
          "usdc",
          "settlement"
        ],
        "url": "https://kertivo.com/check"
      },
      {
        "description": "Did this USDC payment settle, and what is the payer's funding source? Deep Base verification: confirmations, payTo/amount match, fake-token and lookalike warnings, plus the payer's inbound USDC funding history from an index (latest 500 transfers before the payment, then up to 5 more pages; coverage.historyComplete says if that was the full history), top funders, coverage stats and a recheckable sha256 receipt. Not charged if the index is down. Body {txHash, expectedPayTo?, expectedAmount?}.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "1",
            "group": "body",
            "name": "expectedAmount",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "0x509E55c4F898B43C856Fb0E51048B1b7bFBC9eDE",
            "group": "body",
            "name": "expectedPayTo",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "0xc37cbdfa44230f05129348d5160254abf354791d79de68228b201ba09de143c1",
            "group": "body",
            "name": "txHash",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.05",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        },
        "serviceName": "Kertivo deep payment verify",
        "tags": [
          "payment-verification",
          "base",
          "usdc",
          "funding-source",
          "full-history"
        ],
        "url": "https://kertivo.com/check/deep"
      }
    ],
    "enriched": false,
    "iconUrl": "",
    "id": "kertivo-com",
    "integrationType": "",
    "isNew": false,
    "name": "kertivo.com",
    "networks": [
      "Base"
    ],
    "priceSummary": {
      "avgCostBasis": "exact",
      "avgCostPerTransaction": "0.021667",
      "currency": "USDC",
      "maxAmount": "0.05",
      "minAmount": "0.005"
    },
    "provider": "kertivo.com",
    "providerUrl": "",
    "serviceName": "Kertivo",
    "tags": [
      "base",
      "usdc",
      "security",
      "address-poisoning",
      "full-history",
      "payment-verification",
      "x402",
      "settlement",
      "funding-source"
    ]
  },
  "source": "agentic_market",
  "summary": ""
}

What the leaf hashes

{"body":"a6e9dd6e8f9d95ae1a9e734be563d05c3bcc5b33253b483332c37e450b47ed9e","id":2689,"kind":"listing","method":"baseline/1","observed_us":1793025267116750,"prev":null,"subject":"agentic_market:kertivo-com","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0xd8e8b5f2992ebcf67bf221e1be8de215b75f1299ed1b640e5488330aaffcda5a
2. 0x674e77c4627acdc5b23828aaf53c44d55c3a4a572253b78ddfdc704d78692521
3. 0x3c89e072f7d7a5f20427651cc822ddfb11f501c8ef6a57bb14b9a688da70aa98
4. 0xf69ca5823a758035fc0fcd2efc88dcca03378274ef21bd56e7b30d675a0c86b8
5. 0x4a923c9934af460bbbc76fa872baeb559c73f2e372110aaec20299510e0cc896
6. 0x1d2ada18c844656bd456bdaaea63fa3754e335594db16e62f7580e525ce68274
7. 0x744d7d8c42fd8cbfe9e1b0f7c3094d0030ccfa57037517f5b81f4e5f93c065b4
8. 0x42976d0f83692971c331cc58fe03660741ec11b5c5e957af0ffcbe7048ecb6c7
9. 0xb70320c30c9047039b9ad7306e3a8f258e2cc47dace4e2c691ca04dbfe0d2131
10. 0xcced339e83616c17d79611bcc0e7ac8b05c10472b6ca8350f4c914df1195d992
11. 0xd96796540b8f5b592d8f03fc775e7a26bd00af394ce468ff886a43215a522475
12. 0x07e91966e8a0c43a0725bd3d523259064a93333c2900e6171b69ffbfd9f423f1
13. 0xcd9e3af1fa905ec61b99ee9442716d7c7a439aecacd018ec229a24def1cabf6b
14. 0x6b927d53caa5125cdba9255612d524976c691f8672796c3f0885ba2c5b3af1ad
15. 0x6dc40f983a3840a0ad927a9ca17f4ff1e3b649a6c735e2a09b140db7c2caf13b
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae