Evidence row 16535

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://health-api.tail11a58f.ts.net/ping"
    ]
  ],
  "name": "x402-testbed",
  "owner_address": "0xb92a731c08bf78f5ec87e8b48c74abf685e84029",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb92A731C08bF78f5EC87E8b48C74aBf685e84029",
        "scheme": "exact"
      }
    ],
    "description": "x402 Testbed: smallest possible paid round-trip. Use to verify your client can parse a 402 challenge, sign USDC, settle via facilitator and retry. Returns pong + network.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {},
            "type": "http"
          },
          "output": {
            "example": {
              "network": "base-sepolia",
              "pong": true,
              "service": "x402-testbed",
              "time": "2026-10-20T15:24:20.636Z"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {},
                  "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": "2026-10-26T12:53:57.028Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-26T09:45:31.291Z"
    },
    "resource": "https://health-api.tail11a58f.ts.net/ping",
    "serviceName": "x402-testbed",
    "tags": [
      "x402",
      "testbed",
      "ping",
      "developer-tools"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "x402 Testbed: smallest possible paid round-trip. Use to verify your client can parse a 402 challenge, sign USDC, settle via facilitator and retry. Returns pong + network."
}

What the leaf hashes

{"body":"96e50aaec1afbd60651121020ebd867f94a3e00e76019a22cde400d80b96d1c8","id":16535,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793025323151511,"prev":null,"subject":"x402_bazaar:https://health-api.tail11a58f.ts.net/ping","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. 0x13951ddf0f102176d0f531ee8b20ac9f2d8e640d206ac3dc8275321309e967f9
2. 0xe0cf38bfd183151dedde7efc64f13552c56f44bd375505261f20fdc7bdc25399
3. 0xac429e285a56d60420d3bc7c1cfea5158495a1a8a4f184f4a3ddfb8243298d45
4. 0x45f143b9eddb2e12b198938cb6b72cef20bfe17806f1a33f104c318768246db7
5. 0xdad47ba4d1660c461b874976d9324a9dba0d00dc737d19f665a9df2f25689d2e
6. 0x06bc00fa70681853c8b2b7be44f91ec5cb24acbca079f3de49b53ed1d72126de
7. 0xb83505c1b54f5052c71b173d1b53e367311e4d75746d9739ed2a48d86f5683f0
8. 0xdf70ef695a76ba1bc5f794c08142891e31eeb3ac2259248da590e19ff487d69e
9. 0x36a9d47985ea66450085f279b1077b70e31b95704b735175f3a64a5891b7b28e
10. 0x4a6e9d6f8bcdedf054372776140e3ef47d5f8d6efb1bdab8c26dcd9c83c1db99
11. 0x9d19085bdd0cb9322cb235f88ed9fb666f1b60fe7afec1170ec05f633673830a
12. 0x7e390200ea1ea25db5884cf05fa50ad599f0759b573f081e361cc22f7206133c
13. 0xff1c28bdf595a3d1333e9915edc68e9c5fded7bd5923fa85870979af34cbc3b3
14. 0xb49e8c2564256e5322e375cb619d9ac70fd17c1d1eba9c991bba4cb6428f45cc
15. 0x60582ab4b41e72eb70eb0bce07fbf0fb4d2b62a8bad5be50f5d16d511adc746c
16. 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae