Evidence row 3768

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://spreadsheet.openverbs.com/v1/a1-to-rc"
    ],
    [
      "x402",
      "https://spreadsheet.openverbs.com/v1/column"
    ],
    [
      "x402",
      "https://spreadsheet.openverbs.com/v1/range"
    ],
    [
      "x402",
      "https://spreadsheet.openverbs.com/v1/rc-to-a1"
    ]
  ],
  "name": "spreadsheet.openverbs.com",
  "owner_address": null,
  "raw": {
    "caip2_networks": [
      "eip155:8453"
    ],
    "category": "",
    "description": "",
    "domain": "spreadsheet.openverbs.com",
    "endpoints": [
      {
        "description": "Parse an A1-style cell reference (e.g. \"B3\" or \"$AA$100\") into 1-based row and column numbers, plus the column letters and whether each part is absolute.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "B2",
            "group": "body",
            "name": "ref",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.004",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "Spreadsheet References",
        "tags": [
          "a1 to row column",
          "parse a1 reference",
          "spreadsheet cell lookup",
          "excel cell coordinates",
          "a1 reference parser"
        ],
        "url": "https://spreadsheet.openverbs.com/v1/a1-to-rc"
      },
      {
        "description": "Convert between a spreadsheet column letter and its 1-based index in either direction. Provide exactly one of `letter` (e.g. \"AA\") or `number` (e.g. 27); the response always contains both.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "AA",
            "group": "body",
            "name": "letter",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.004",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "Spreadsheet References",
        "tags": [
          "spreadsheet column conversion",
          "column letter to number",
          "column number to letter",
          "excel column lookup",
          "a1 column api"
        ],
        "url": "https://spreadsheet.openverbs.com/v1/column"
      },
      {
        "description": "Parse an A1 range like \"A1:C10\" into its start and end cells (normalized so start is the top-left) and its extent — row count, column count and total cell count.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "A1:C10",
            "group": "body",
            "name": "range",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.004",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "Parse an A1 range",
        "tags": [
          "parse a1 range",
          "spreadsheet range extent",
          "excel range parser",
          "cell range dimensions",
          "normalize a1 range"
        ],
        "url": "https://spreadsheet.openverbs.com/v1/range"
      },
      {
        "description": "Build an A1-style cell reference from 1-based row and column numbers, optionally marking the row and/or column absolute ($).",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": 1,
            "group": "body",
            "name": "column",
            "required": false,
            "type": "number"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": false,
            "group": "body",
            "name": "columnAbsolute",
            "required": false,
            "type": "boolean"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": 1,
            "group": "body",
            "name": "row",
            "required": false,
            "type": "number"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": false,
            "group": "body",
            "name": "rowAbsolute",
            "required": false,
            "type": "boolean"
          }
        ],
        "pricing": {
          "amount": "0.004",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "Spreadsheet References",
        "tags": [
          "row column to a1",
          "generate a1 reference",
          "spreadsheet coordinate format",
          "excel cell address",
          "build cell reference"
        ],
        "url": "https://spreadsheet.openverbs.com/v1/rc-to-a1"
      }
    ],
    "enriched": false,
    "iconUrl": "",
    "id": "spreadsheet-openverbs-com",
    "integrationType": "",
    "isNew": false,
    "name": "spreadsheet.openverbs.com",
    "networks": [
      "Base"
    ],
    "priceSummary": {
      "avgCostBasis": "exact",
      "avgCostPerTransaction": "0.004",
      "currency": "USDC",
      "maxAmount": "0.004",
      "minAmount": "0.004"
    },
    "provider": "spreadsheet.openverbs.com",
    "providerUrl": "",
    "serviceName": "",
    "tags": [
      "a1 to row column",
      "parse a1 reference",
      "spreadsheet cell lookup",
      "excel cell coordinates",
      "a1 reference parser",
      "spreadsheet column conversion",
      "column letter to number",
      "column number to letter",
      "excel column lookup",
      "a1 column api",
      "parse a1 range",
      "spreadsheet range extent",
      "excel range parser",
      "cell range dimensions",
      "normalize a1 range",
      "row column to a1",
      "generate a1 reference",
      "spreadsheet coordinate format",
      "excel cell address",
      "build cell reference"
    ]
  },
  "source": "agentic_market",
  "summary": ""
}

What the leaf hashes

{"body":"b517c3dd9dc6bf57d3aa9a48c9318b22a4174c07c3a05b7613f2ca2ad9efa134","id":3768,"kind":"listing","method":"baseline/1","observed_us":1793025276182720,"prev":null,"subject":"agentic_market:spreadsheet-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. 0xcff23d3fbbb2ead0a993f770489f97bcc22ae31be4bd64a0606731e6504ed6cd
2. 0xa39352c41ddfea39b53bb362d948ddf20db373d34dd832cefd5880a645482efb
3. 0x6ddb76f2685f523d1e44834bf60620dc9eb24766a4df6967f5c2ff0383b52e6f
4. 0xfcf5c811936d9ea7596a4cc9d6878bf3fdf5e8d617537ed660eb977bd9e09e00
5. 0xecb476d85e7d3a301b743e9589d760cc0a5da9b26ca136abea580d9caa81ab2c
6. 0x66413050c2bfa7ee4a3a5e2d6fbaaad0fab9b9723ad32ca621d6c0b05880ddd8
7. 0xac392c6b1a09f33c621ea506fd122c2942a427b7178f1dba823880ed4f4b1ca1
8. 0x01d8cd3286102b6897f581e438ecdb97f76fc343baea1305ab5d8b47a6ea7569
9. 0x52dbc4ae429376c97213f4f84a5eeadb0bf802c0f8c263e05a04c4f3fe6b0f2b
10. 0x0b686dbafff3016a42481f12f34ebfe6ab887a7ca8848d16b83a5946fcda3181
11. 0x026c75973d292b16fc9c1aefff047e2e4656075d16803275f6ae428cf2826ee1
12. 0x3f401930661bff9a668037b662b5b8766fa60035f100a3e9fc585c576d892ffa
13. 0xe43762a621da83c0b4b63f549cd2e19c428ac702bfc1038d70233867b06c447f
14. 0xefabf1105e09cf52c12c58e60cbb5048b9ac3f02631d1816a926e14bdd86fbdf
15. 0xe94ca5b798e9899ad611e57835af42266e20f53f44977e487d81365e30972beb
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae