Evidence row 72296

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://checkdigit.openverbs.com/v1/ean"
    ]
  ],
  "name": "EAN / UPC / GTIN check",
  "owner_address": "0xb3f4de103f34b99f0da19b4f16d6b53a14c2194a",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A",
        "scheme": "exact"
      }
    ],
    "description": "Validate a GTIN barcode number — EAN-8, UPC-A (12), EAN-13 or GTIN-14 — by the standard mod-10 check digit. Length selects the scheme.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "number": "4006381333931"
            },
            "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": {
                    "number": {
                      "description": "8, 12, 13 or 14 digit GTIN (spaces/hyphens allowed).",
                      "maxLength": 32,
                      "minLength": 1,
                      "type": "string"
                    }
                  },
                  "required": [
                    "number"
                  ],
                  "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": "2026-10-08T06:12:24.692Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-08T06:12:24.436Z"
    },
    "resource": "https://checkdigit.openverbs.com/v1/ean",
    "serviceName": "EAN / UPC / GTIN check",
    "tags": [
      "gtin validation",
      "validate barcode number",
      "ean upc check digit",
      "upc validation",
      "ean 13 checksum"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Validate a GTIN barcode number — EAN-8, UPC-A (12), EAN-13 or GTIN-14 — by the standard mod-10 check digit. Length selects the scheme."
}

What the leaf hashes

{"body":"5d4b103904116aedf47599841e3ad615f8c3785fdbdcdfc525b724314432c888","id":72296,"kind":"listing","method":"baseline/1","observed_us":1793025485607765,"prev":null,"subject":"x402_bazaar:https://checkdigit.openverbs.com/v1/ean","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. 0xebf5d6ef1fd8342a47a1627f0b0c631125577851bcf0b843e5706301c27046bd
2. 0x4844878235d06bb2a942646616d41bc42975cfc0568726fe93591fbfdc9b41b1
3. 0x4f7c4593d068b505444d73bf2aa87f5771cbaf4b7c74d2b89ae5d8f4a22da5eb
4. 0xa632bc853045ec3ae3422b676d82c43db7a6acb3b49933ed028cb45128bab66d
5. 0x7d4724c153efc62cb36f7abddc6bfc8d75ca5e14e834659fc622dd09c753cc7e
6. 0x5a01ce2ed543eda968c423e79df88c96bef965912c654c00370e04685146c716
7. 0xfddfd95699e58da1220eae6581e620d792d45f2615eecb77a969911459728c56
8. 0x057f968c6daa3ae51d5645e62e276976a58ef04a822bb1b71b010151e233410e
9. 0xd91aca262229fe322bd56bbb83c7a23a804f1db912554fade5196390780207ea
10. 0xb598275c2ff75ff17a9919c2777963ccbcc1ef88c33df05a94500ee63d2a5601
11. 0x9fa929c4db0d6b2b1aa73d590a53584134638629c20773074b1277326c981fb4
12. 0x4bac6365a3676c613d57c80f4d4f617e583205074db24f3dec4d2ed4939a26e6
13. 0xec98ca25cb12ffed7c3e1373971719ce414ee6deecd1e7724b2979e2c356d99f
14. 0x614d844c9e0509d9f9e63697aa2935555bce5f13695a8dc0047aa9e9898d70b3
15. 0x95657a7d540ed6cac0bde9995782333b2562a9a6641853269ac95148827410f0
16. 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
17. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae