Evidence row 1531953

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://instructional-decision-engine-x402.vercel.app/archive/compare"
    ]
  ],
  "name": "NovaPath",
  "owner_address": "0x6b62673ccbe35ff0dc68490c7ca576334e0d607e",
  "raw": {
    "accepts": [
      {
        "amount": "20000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x6B62673cCbe35ff0dc68490c7Ca576334e0D607e",
        "scheme": "exact"
      }
    ],
    "description": "Compare two to four exact Internet Archive references across authorship, reported publication year, subjects and reported license coverage. Highlights missing metadata and shared subject terms, with direct source links. No full-text comparison, expert ranking or rights certification.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "identifiers": [
                "teacher-education_202212",
                "readingsinhealth0000vari"
              ]
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "identifiers": {
                      "items": {
                        "pattern": "^[A-Za-z0-9][A-Za-z0-9._-]{0,199}$",
                        "type": "string"
                      },
                      "maxItems": 4,
                      "minItems": 2,
                      "type": "array",
                      "uniqueItems": true
                    }
                  },
                  "required": [
                    "identifiers"
                  ],
                  "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": "2026-10-31T00:58:03.997Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-31T00:58:03.83Z"
    },
    "resource": "https://instructional-decision-engine-x402.vercel.app/archive/compare",
    "serviceName": "NovaPath",
    "tags": [
      "internet-archive",
      "research",
      "bibliography"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Compare two to four exact Internet Archive references across authorship, reported publication year, subjects and reported license coverage. Highlights missing metadata and shared subject terms, with direct source links. No full-text comparison, expert ranking or rights certification."
}

What the leaf hashes

{"body":"6725eefe4ca6436f76c1b72e8f4e36bc72c23c12a5c68b86d1fc2f62bf88b4e3","id":1531953,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793473467549683,"prev":null,"subject":"x402_bazaar:https://instructional-decision-engine-x402.vercel.app/archive/compare","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-31 (246033 rows).

1. 0xb91dacdcbbc52171005432f0c7af3603a41422a9be4472a7ccd63f9f222a85c9
2. 0xf71239fb35b82d0d09399129291c91421c5a327adaf11d7fefaeace0a7629fc0
3. 0x6dc9738a404f0a1407bd8312d488924cf8572e9291d9ba1cec43dd907dd40a2b
4. 0xe8edf9083d29256325bda8545a22211821504b778a5fdb1282dc6c3733f92bfc
5. 0x5fd15aac3b131112bb726493d894717f8ef65e497db3d072ceb98ab83bc4058a
6. 0x66eb7a5d3df5e9e3e8cca3babaa5c25eb6a6ec0c4545b39568b3aa5174c2ac93
7. 0xf507b44cb4147a4cc215309f2c24254818d807b6bdd268440f96a5bc1a6c12ff
8. 0xb175e68cd5cd7a3754ebd16d1c7c5f1524fa72c339949ea3400f67ab03b9a117
9. 0x05ce0cc019f7bd4f652b290b4894c2b0d9bc155790ee1fe51457dffc56e6701f
10. 0x970ddea830688bb25259ce6affb2dba2c1898b83676100aa8e55657764acc799
11. 0x4318e4a29656b786a1abd955a6ea9b38e59519b2c6038508243451c0f4196873
12. 0x4c43bdd4abc7f74027388dc651137a061fab0f92ec7ba4b2e69fd9ee04a23306
13. 0x2e3af79e569e22a770a061aed37789a38fa8f77d55a49fabc9b98ec41109db25
14. 0x8185eeafe9adefad89b2d62fb2c2a6beb3fde0409e51deb7d5c1a3c4cb40d65a
15. 0x57afe240b626bf60f6af8c76404811e95ea5519f217fac382bd159177a8ec870
16. 0x2e1cd25ce4079da9bfa6219d7ffec992149add4cd7d5c5b2cfee9908c1c8a5dd
17. 0x50003b3c3045b653f8be4232e95e80582cf5c54c14c509ba0a9a197b9e5005cb
18. 0x0504a25438f3c7932125463198ca74c5064f23f71a5c92763b3fc96a98cc8b57

Day root

0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab

Chained

0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980

Published

On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0