Evidence row 271846

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://qr.openverbs.com/v1/barcode"
    ],
    [
      "x402",
      "https://qr.openverbs.com/v1/decode"
    ],
    [
      "x402",
      "https://qr.openverbs.com/v1/qr"
    ]
  ],
  "name": "qr.openverbs.com",
  "owner_address": null,
  "raw": {
    "caip2_networks": [
      "eip155:8453"
    ],
    "category": "",
    "description": "",
    "domain": "qr.openverbs.com",
    "endpoints": [
      {
        "description": "Render a barcode (Code128, Code39, EAN-13/8, UPC-A/E, ITF-14, DataMatrix, PDF417) as SVG or PNG data URL.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "svg",
            "group": "body",
            "name": "format",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": 1,
            "group": "body",
            "name": "scale",
            "required": false,
            "type": "number"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "example",
            "group": "body",
            "name": "text",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "code128",
            "group": "body",
            "name": "type",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.004",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        },
        "serviceName": "Generate barcode",
        "tags": [
          "generate barcode",
          "barcode generator api",
          "create code128 barcode",
          "ean upc barcode",
          "datamatrix barcode"
        ],
        "url": "https://qr.openverbs.com/v1/barcode"
      },
      {
        "description": "Read the text out of a QR code or barcode in a PNG or JPEG image. Auto-detects QR, DataMatrix, PDF417, Aztec and 1D symbologies (Code128/39/93, EAN-13/8, UPC-A/E, ITF, Codabar). A valid image with no code returns { found: false }; a payload that is not a parseable image is a 400.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAC0lEQVR4AWP4DwQACfsD/c8LaHIAAAAASUVORK5CYII=",
            "group": "body",
            "name": "image",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.004",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "Decode QR / barcode",
        "tags": [
          "decode qr code",
          "scan barcode image",
          "read qr barcode",
          "barcode decode api",
          "extract code text"
        ],
        "url": "https://qr.openverbs.com/v1/decode"
      },
      {
        "description": "Render text (URL, vCard, Wi-Fi config, …) as a QR code — SVG string or PNG data URL.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "svg",
            "group": "body",
            "name": "format",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": 64,
            "group": "body",
            "name": "size",
            "required": false,
            "type": "number"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "example",
            "group": "body",
            "name": "text",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.004",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "3",
          "l30DaysUniquePayers": "3"
        },
        "serviceName": "Generate QR code",
        "tags": [
          "generate qr code",
          "qr code api",
          "create qr code",
          "text to qr code",
          "url qr code generator"
        ],
        "url": "https://qr.openverbs.com/v1/qr"
      }
    ],
    "enriched": false,
    "iconUrl": "",
    "id": "qr-openverbs-com",
    "integrationType": "",
    "isNew": false,
    "name": "qr.openverbs.com",
    "networks": [
      "Base"
    ],
    "priceSummary": {
      "avgCostBasis": "exact",
      "avgCostPerTransaction": "0.004",
      "currency": "USDC",
      "maxAmount": "0.004",
      "minAmount": "0.004"
    },
    "provider": "qr.openverbs.com",
    "providerUrl": "",
    "serviceName": "",
    "tags": [
      "generate barcode",
      "barcode generator api",
      "create code128 barcode",
      "ean upc barcode",
      "datamatrix barcode",
      "decode qr code",
      "scan barcode image",
      "read qr barcode",
      "barcode decode api",
      "extract code text",
      "generate qr code",
      "qr code api",
      "create qr code",
      "text to qr code",
      "url qr code generator"
    ]
  },
  "source": "agentic_market",
  "summary": ""
}

What the leaf hashes

{"body":"abdb0a692cba4dcfe1c92db449883498aac45d36b062d3ad41db475ba6b7e021","id":271846,"kind":"listing","method":"sync.agentic_market/1","observed_us":1793038626049666,"prev":265550,"subject":"agentic_market:qr-openverbs-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. 0xf51b0df1e1381dd4ed01c305d2915fc599444685da196b1b117704603a17550c
2. 0xdbf0895717a2b4559400c32f09a63fba61c25fbde230fcf62c5c51a3a94dd254
3. 0x346f9963310a718adc64b6a189769d6cb3e7d1a4560d5e04aed65b93ab3e005f
4. 0x352e46168d810eb2986b329273e1b8d8c17ec8ee6a2777a616a8ee0c4b623c5e
5. 0x67c7406389d3a7e3dacca7f93f9aa7c92ba9865dc55e9accc14d2f9eb4201026
6. 0x7c204fab50d657e59ff400d50cf7ec6bf9c24532724df5f17e1d4d1537be9cbf
7. 0x1c952519b2daad241de615ba8b7c7145cbc73772bd66ae30e33ae771c9f4e83f
8. 0x0d3e87611e7cb959bbafba509e7f9080b51c2e747a8d190ab50a0bc64ccb7353
9. 0x3d82e9ada7c7d17c361b62c6ce33f9647e7db0d1c163d3a3aa6538d4c298b9bd
10. 0xf7bdc34efb83dc5cbbcb5071558fe87a477728e005b9d180c492e090371b2357
11. 0xd1f6cbd0d3ee44ebe2e23b42e7f1822bbdf0afd342375323b5d4f8bc89cd943a
12. 0x86ae35463d854f3938d986999aa8497e14f0ba2aa6f39a269e1e6d1134f9b847
13. 0x79695e4356ea25a2b58265a824698704cd2c743099ce2dca9e41384ce8f1a8c5
14. 0xd769d41500075835c3b2f9184d223699fb983fd05c29fbcb44d964abc7ee380d
15. 0x68d296b1e00b4899fb83c3fba36fffaefa311eac2903067dbebfe776a12b4a9a
16. 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
17. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae