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Evidence row 1531957

Observed , by sync.x402_bazaar/1.

Kind
listing
About
source_record x402_bazaar:https://instructional-decision-engine-x402.vercel.app/research/freshness
Recorded
Previous row
None: the first of its kind about this subject
Body SHA-256
c27d16fa481d8a0f85ecc735487ce0426af636a9c53280923e434df0ceddf931
Leaf
0x8a9dc2c8bad53197b57eab6f40fd7af6d0c5854ae9c8a299e516cab2cdb676c9

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://instructional-decision-engine-x402.vercel.app/research/freshness"
    ]
  ],
  "name": "NovaPath",
  "owner_address": "0x6b62673ccbe35ff0dc68490c7ca576334e0d607e",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x6B62673cCbe35ff0dc68490c7Ca576334e0D607e",
        "scheme": "exact"
      }
    ],
    "description": "Audit event age and snapshot age for up to five public records against a chosen as-of date. Distinguishes source-event recency from the observation date, flags stale snapshots and never reports an unperformed live verification.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "asOf": "2026-10-30",
              "maximumAgeDays": 30,
              "recordIds": [
                "construction:X01474338-I1-GC|1|2026-10-16",
                "fleet:9587703"
              ]
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "asOf": {
                      "pattern": "^20[0-9]{2}-[0-9]{2}-[0-9]{2}$",
                      "type": "string"
                    },
                    "maximumAgeDays": {
                      "maximum": 3650,
                      "minimum": 1,
                      "type": "integer"
                    },
                    "recordIds": {
                      "items": {
                        "pattern": "^[A-Za-z0-9][A-Za-z0-9:._|+-]{1,119}$",
                        "type": "string"
                      },
                      "maxItems": 5,
                      "minItems": 1,
                      "type": "array",
                      "uniqueItems": true
                    }
                  },
                  "required": [
                    "recordIds",
                    "asOf",
                    "maximumAgeDays"
                  ],
                  "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": "2026-10-31T00:57:56.336Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-31T00:57:56.166Z"
    },
    "resource": "https://instructional-decision-engine-x402.vercel.app/research/freshness",
    "serviceName": "NovaPath",
    "tags": [
      "research",
      "public-data",
      "evidence"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Audit event age and snapshot age for up to five public records against a chosen as-of date. Distinguishes source-event recency from the observation date, flags stale snapshots and never reports an unperformed live verification."
}

What the leaf hashes

{"body":"c27d16fa481d8a0f85ecc735487ce0426af636a9c53280923e434df0ceddf931","id":1531957,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793473467558417,"prev":null,"subject":"x402_bazaar:https://instructional-decision-engine-x402.vercel.app/research/freshness","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (246033 rows).

  1. 0x8a9dc120a28adc6f0c2cb6833267911f4d70501b53f23ae92ae66b7581298f3c
  2. 0x5f7d31ef7acecabc6be9fc1e5ac0e99f18d04815fb8d32c634b11dbe2604d6eb
  3. 0x7d4fa51d3965dd95647dae38efa59489e40170a0de6e03f449e13d407a030b55
  4. 0xaa415015c6c9edde4cb0def542db0b684a1bae8e62ed79f5add5379bc9c0d2db
  5. 0x3f09dc138fd07cdd1b1441b50f60d97309e6b49caea7f3d7e94b12c14541782c
  6. 0x9cf476912c9e5855b51b7ed6e7fd119417eaa46df8815e0f1268791e737b4aba
  7. 0x1ea6ce7f3780e7d0445c5125efa79630cf0963d9a7c70228362d1f897e387405
  8. 0x642be430172979d6df2c9a7687ef2f13fb754bc4bfe91fc1082a1faced14b7f3
  9. 0xf1629509d38674cccbf466180c560f6e4131ab7173fc775a80b896ab2cfb6bef
  10. 0x04ff92551c4edd622ccc722e8e6c84b6ac418b5a8804dacb87698adae6b61dbf
  11. 0x2e23c2e6de655690363b03f4595fed0e85d52749a3f7d7b47342f3d2e172c262
  12. 0x720a17bc892e029f7a7f7d97ec657500ae4d19e81f252ea03dcb481ffe6284b0
  13. 0xf78dcc497b1eed1570dd01a177c5d9c85de403719e57871edde8db0cd63ccfa3
  14. 0x53cec9a253425d115917fd16acdf0d80665ab0944593859ce1e8b491b9693e2f
  15. 0x91bc1c2b25f148b9b56bf377304983d0f2e68d0d8c3f65c9aaa8adb083331d11
  16. 0x8605635b6c6bd33c6547585212170cc076018c2dd5f81f35a5ac4ade689fbb12
  17. 0x50003b3c3045b653f8be4232e95e80582cf5c54c14c509ba0a9a197b9e5005cb
  18. 0x0504a25438f3c7932125463198ca74c5064f23f71a5c92763b3fc96a98cc8b57
Day root
0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab
Chained
0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980
Published
On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0

How to check it · This row as JSON