Evidence row 72299

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://checkdigit.openverbs.com/v1/luhn"
    ]
  ],
  "name": "Luhn 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 number by the Luhn (mod-10) algorithm — the scheme behind credit/debit card numbers and many IDs. Spaces and hyphens are ignored. A mismatched check digit is a successful { valid: false }.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "number": "4111111111111111"
            },
            "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": "Digit string (spaces/hyphens allowed), 2-34 digits.",
                      "maxLength": 64,
                      "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": "2026-10-08T05:39:57.842Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-08T05:39:57.586Z"
    },
    "resource": "https://checkdigit.openverbs.com/v1/luhn",
    "serviceName": "Luhn check",
    "tags": [
      "luhn validation",
      "validate credit card number",
      "mod 10 check digit",
      "luhn checksum api",
      "check card number"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Validate a number by the Luhn (mod-10) algorithm — the scheme behind credit/debit card numbers and many IDs. Spaces and hyphens are ignored. A mismatched check digit is a successful { valid: false }."
}

What the leaf hashes

{"body":"e8ce978f9f239b38ef651ed80e3114a4016aabdefcc968e3aa67a36e16dab85a","id":72299,"kind":"listing","method":"baseline/1","observed_us":1793025485610207,"prev":null,"subject":"x402_bazaar:https://checkdigit.openverbs.com/v1/luhn","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. 0xa9a56e62c7b98817645f6cfb8eecee760e6c2940a19cf932c6d437bb19d1dede
2. 0x3b6ccffd70f22b7a6cc4244fb1392ac2f16c3bcf9a231061d0b390990868511d
3. 0x28aa47ef94ab8d722c71a47617fa67303e83d2271b27eee1e1490abf08969735
4. 0x1712a9f2be421f34628d9410982380c50431ca9f6f95b7b0a9cbf7412be7d699
5. 0xf4ee04e44ec9bf520c7c6110f463dfb1cb2ac3fab6726fd8d84b0b529a1a8b9d
6. 0x440a057a03bf2e623c0ef4ef9e6efc8364eb9f30b9fc9d152c04deb6d1d33ace
7. 0x431d06cfbca98cecd01a34c7166c8a1aaa365212b26ecb4b3d3e6704f55e600e
8. 0x7054d1ffa122ac459f8bc66487db0c0f7eeebdfd9e85170e98f846c88d774c50
9. 0x82d9ae554aa7cec8f51a37c603e34e767e325b0595e6cdd1f431b89b2f287159
10. 0xdafe89e6fd113360e44ef4b5cf78f02090d7d8c58f90801b9c55d378ade0c6ae
11. 0x55ba80743bf45624f0b04651dfd0a37e2a85f91f45e334ff14efbb74a49dd361
12. 0x09a19b8d31a6e948e5051cb72b98b1d2b2bfe053f62d6d24d61c22b3ed1c3f24
13. 0x4700d6dfdb40e52e2ceb8ffe62c75f3f708d23452f828255fd003d795f5d9d66
14. 0x3b4dba7d874fc323b0a364140a9c60f37bf547fe671897653118a9873fe03420
15. 0x1a74ed3b3756b9cd946da49701bcec120ec88645013da99fa9eea60b39e1a570
16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae