Evidence row 426107

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://bess-x402.onrender.com/v1/lookup/universities"
    ]
  ],
  "name": "University Lookup",
  "owner_address": "0x1129a6bb9c6165ff07fdc509c107b522ca0e1871",
  "raw": {
    "accepts": [
      {
        "amount": "3000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x1129A6BB9C6165FF07fdC509c107B522CA0e1871",
        "scheme": "exact"
      },
      {
        "amount": "3000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0x1129A6BB9C6165FF07fdC509c107B522CA0e1871",
        "scheme": "exact"
      },
      {
        "amount": "3000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:42161",
        "payTo": "0x1129A6BB9C6165FF07fdC509c107B522CA0e1871",
        "scheme": "exact"
      }
    ],
    "description": "Universities worldwide by name and/or country, with official websites and email domains. Use to verify academic email addresses, fill forms or build education lists.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "country": "United Arab Emirates",
              "name": "technology"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "count": 5,
              "matched": 5,
              "source": "Hipo university domains list",
              "universities": [
                {
                  "country": "United Arab Emirates",
                  "country_code": "AE",
                  "domains": [
                    "dubai.rit.edu"
                  ],
                  "name": "Rochester Institute of Technology, Dubai",
                  "state": null,
                  "websites": [
                    "http://dubai.rit.edu/"
                  ]
                },
                {
                  "country": "United Arab Emirates",
                  "country_code": "AE",
                  "domains": [
                    "ku.ac.ae"
                  ],
                  "name": "Khalifa University of Science, Technology and Research",
                  "state": null,
                  "websites": [
                    "http://www.ku.ac.ae/"
                  ]
                }
              ]
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET",
                    "HEAD",
                    "DELETE"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "country": {
                      "description": "Country name in English",
                      "type": "string"
                    },
                    "limit": {
                      "description": "Maximum number of results (1-100)",
                      "type": "integer"
                    },
                    "name": {
                      "description": "Name or part of it",
                      "type": "string"
                    }
                  },
                  "required": [],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-27T04:28:23.936Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-27T04:28:23.585Z"
    },
    "resource": "https://bess-x402.onrender.com/v1/lookup/universities",
    "serviceName": "University Lookup",
    "tags": [
      "universities",
      "education",
      "email-verification",
      "lookup"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Universities worldwide by name and/or country, with official websites and email domains. Use to verify academic email addresses, fill forms or build education lists."
}

What the leaf hashes

{"body":"65ca280f95e6b52abdc5372dbcb2c294dd5eb2657bf5372f89362d79ba48a94a","id":426107,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793086212882778,"prev":408452,"subject":"x402_bazaar:https://bess-x402.onrender.com/v1/lookup/universities","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0x5d1a279e59ecd87c3d6a644ec45126ab30845e716f7d3589ff165532fa3adf47
2. 0xb320e5f6ad9b0c3da8d83c1de2c99e1dc79b0681daf2d53f097d2ab27953c88f
3. 0xa9466bda9700272fc7e8ca7564fc98df47bcdbc089d516e276d07442d3c09d97
4. 0xfba54ae65234e5e66f71c4a2335fd7a5fb2c14966d9d8c159b05523e96b63f0b
5. 0xe4cf4fdb5956cf9aa876c46ccbe6df0d71c953cea24be6ecb042eaf3d7a11689
6. 0xcead2c326351e6422f5f93b83970414c32478722a70043ef65e53967b45a8ba9
7. 0x8d0b618045c4ae2bb61e85156b294f2ccb712355e0e227979f3d9b3bb4e913bb
8. 0x6b79a42b692a5fe615873373c84f3825344c7132a3e4951cf06afb2841bf3006
9. 0x748b73e53ac4b81808f7eb6fb897713d40278caa15d3ceda5bae3e2c5565fa6a
10. 0x3d22d634571ba72c183e235f8080fb451105de49426266f015f163e6a5c09b1b
11. 0x2852744b47bc9835dedf6e89aec877e57a0e0ed97b36700cae3173aefff12cb5
12. 0x548136c1e3ccb412bb6e8b0e92df8bd9db651531331fa2a46332b9c2956172f5
13. 0xeaf6b21867367f85a965f982b6593c42eafe4fdf74e94b675523a6478de49a54
14. 0x4277e02be0b5d91d78bc2247e37d402572474ba896c2e8f45765c8dc4e244d36
15. 0x6f00f0da417f4126951ba8ba9b7962c847e91f5c61364ad9ad47e5f979698a60
16. 0x23cf9bb4337ee8be7fcae368fd69d24c62c11fb45882127b4cd919bb96a19996
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4