Evidence row 451749

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://gblin.digital/api/x402/catalog"
    ]
  ],
  "name": "gblin.digital/api/x402/catalog",
  "owner_address": "0x0eba5d314f4f5dcb7a094953fa9311a45172dd1b",
  "raw": {
    "accepts": [
      {
        "amount": "5000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x0ebA5d314F4f5Dcb7A094953Fa9311a45172dd1B",
        "scheme": "exact"
      }
    ],
    "description": "Call before your agent pays an x402 service it has not used recently: is that endpoint actually alive? Liveness of the ~200 most recently updated Bazaar listings, probed in rotation (each about every 36h): HTTP status, latency, last-OK time and consecutive failures per endpoint. Measurements only, no judgements; the probes never pay. Free aggregate view: gblin-mcp.gblin-mcp-worker.workers.dev/catalog",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {},
            "type": "http"
          },
          "output": {
            "example": {
              "alive": 198,
              "cadence_hours": 2,
              "probed": 200,
              "sample": [
                {
                  "consecutive_fails": 0,
                  "http": 402,
                  "last_ok": "2026-08-30T09:00:00.000Z",
                  "latency_ms": 143,
                  "resource": "https://example.com/api/paid"
                }
              ]
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {},
                  "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": "2026-10-27T09:46:53.598Z",
    "quality": {
      "l30DaysTotalCalls": 24,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-22T20:58:56.484Z"
    },
    "resource": "https://gblin.digital/api/x402/catalog",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Call before your agent pays an x402 service it has not used recently: is that endpoint actually alive? Liveness of the ~200 most recently updated Bazaar listings, probed in rotation (each about every 36h): HTTP status, latency, last-OK time and consecutive failures per endpoint. Measurements only, no judgements; the probes never pay. Free aggregate view: gblin-mcp.gblin-mcp-worker.workers.dev/catalog"
}

What the leaf hashes

{"body":"74c4692c8211222cd691cf23f0dbb74a0e83d41f09125a58fc1530f98e7a8e20","id":451749,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793100514079995,"prev":75762,"subject":"x402_bazaar:https://gblin.digital/api/x402/catalog","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. 0x038d34a472b31b782681a0f90be0e4e38122f15f72a7804dea38ef0502078381
2. 0x8eb73fcb512e75ca664efb55a8d19007e58b587439fc8dd570e7814d4e2752bb
3. 0x1357159ada5617d999dc7f43b761462daa447dd47681e9f6726995c98d18f5e3
4. 0xa829b374bac56ba73504250177e1926c2e28caa297454782c5c2d7f37771fd0e
5. 0xd105fc92614e04217d122438c72e4db21f02737bfbb6636fee8f96bd0e4a0c98
6. 0x004598cf1db27a8945ee8d9c1626378aa91b8f0ca726750707be8bde34937b4a
7. 0xc05c8bf1fe1be71e4464ed480b11798ce1b7f7157fd2ec87e26e2cbbc99b8b1d
8. 0x664f55a9a969d403aa1f31c1224b3fab1e498529409c3a137bcdb33e0a6efa89
9. 0x29616e246d17d80bec73757375e4a1f2cd0395f79cd494ceeeb1565036b3fc91
10. 0x4f51aa4fbe1c66521c58ff8a79b969308a92af83c3dfa439dc3d45be02e035e3
11. 0xb428d1c0ffbb1f2e74ff7e62f152f655db4bd1935bbdcbefa7286b1094075929
12. 0x05916cc6b98491a0d541e4ecca3d0132fa255184243406b5a8a52bb1b6b63bd0
13. 0x5b34b9f89512a83faa4bfecec322037670cc1af58e6e94a86fe88934434d7ddf
14. 0x29e12cb67839430fa64ab8bd05d52bab606f2978d9e6d2fb094fece9438fd4de
15. 0x2cf27e8a181d60d0dd27c186c2eddfcbb4e8fa71cf66feeb55a4d730e15ee8c4
16. 0x518b93854db03dc9fc938883abf30da6eaae5ae0d4336903968fd32a7df8c71b
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4