Evidence row 121598

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://spreadsheet.openverbs.com/v1/column"
    ]
  ],
  "name": "Spreadsheet References",
  "owner_address": "0xb3f4de103f34b99f0da19b4f16d6b53a14c2194a",
  "raw": {
    "accepts": [
      {
        "amount": "4000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A",
        "scheme": "exact"
      }
    ],
    "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.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "letter": "AA"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "letter": {
                      "description": "Column letters, e.g. \"AA\".",
                      "maxLength": 8,
                      "minLength": 1,
                      "type": "string"
                    },
                    "number": {
                      "description": "1-based column index.",
                      "maximum": 16384,
                      "minimum": 1,
                      "type": "integer"
                    }
                  },
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-08T05:39:54.736Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-08T05:39:54.474Z"
    },
    "resource": "https://spreadsheet.openverbs.com/v1/column",
    "serviceName": "Spreadsheet References",
    "tags": [
      "spreadsheet column conversion",
      "column letter to number",
      "column number to letter",
      "excel column lookup",
      "a1 column api"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "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."
}

What the leaf hashes

{"body":"808e4c4bb118807715bc8974257e9bec73363f03cdb749abff0a83f536ba4efb","id":121598,"kind":"listing","method":"baseline/1","observed_us":1793025620125323,"prev":null,"subject":"x402_bazaar:https://spreadsheet.openverbs.com/v1/column","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. 0x2207b78dd90704a45a88ce2896b5596a3755e28f439c8aba3127732a48527afc
2. 0x81670d850d9a4931d0418db241433dc10c30cbbf4a81ee48480f87adcbe0c4af
3. 0x9fc64c8b6f3f355612041c13a2d968e467e5a9bf27a47d101b3685a3073cd819
4. 0x138d0a5814077f2eadedb0b7fb07e49e991a44de84c597c3809c3ce5adfc6260
5. 0x01af11f76fe48e80831e35bc86414f5cea75ccafb6a9a5f861e60fc7f7b4919a
6. 0x8134b1da834847cf56d9045e2da0531a0da45df29ba9526090cf39900384561e
7. 0xa3740a3d51dfada890b5c37d93a6d049089f94aaf102f687a711731c291fd4ea
8. 0xc72169ad39487a4b2172ad8c12e494ad009605ef11baa039e3f2bd121fd0d66f
9. 0xdf8f5ccb0f29bdaeec33938c5d8a2e7e12121c37883fd38843b17a323f25f547
10. 0x799af748a278188f9c62b046d3a85d0c1267a4af67aeaf337854a2e36cc39487
11. 0xda2a271b0447c8ac22315d2ea7582e04968ddef46c7cbd29d7462934a9b3b37a
12. 0xac5b705d705b0f1bc42cf2ad1a7f1f197ea96178ce0704432cbb5d556e8671a4
13. 0x9d75d4d3ab6219edefa04be60b32fdd56be7a7672f370a5115f02f7b098ecd27
14. 0x9dfd312f3d4937f7cb144cee3987e8516f222932b4ea286605236d73cfa1ed16
15. 0xc3a6a3ae44ec0da1848b16d40c45d7aac97a67352eea8df18e0f26edabea8a2f
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae