Evidence row 526090

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": 25,
      "l30DaysUniquePayers": 4,
      "lastCalledAt": "2026-10-27T09:46:53.389Z"
    },
    "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":"079ae775126591a3495ae1784d844aa4e539fba3e5188b3b268f904e549b6651","id":526090,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793124781083237,"prev":451749,"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. 0x0a5486cfc7b84569ee68c1d0696ce72fff85c7c4fbf1c9ea4d5ab7081dcc05bf
2. 0x0b0139e652ba051dff17d86676ef386eb8845f1a8c5c26db1f155948107fb716
3. 0x07bd1901bc803d6546d12477402f6b70fa6244f664f7d161af09b87f50c15564
4. 0xe57c638ed18d28499dede308a1621f44fcfce2e591ae1778664fb11a7bae069d
5. 0x969abfdc7601ffe5cb2e3a373ed047ae734077127f80e76b35ce56846daead23
6. 0xe1f16748aa6213325f990ff6e3d2e82e29e9064ef78afd9f21bb09a871b5d60d
7. 0x143db6930d210efcadc556aefbe1b111d2c7fd1de375e5d0d4025464188af89e
8. 0x3e625f5955304d8c9d1f5bb7ac68d9eee016aee3020600b1ccdafdf012828686
9. 0x1e041d4db1d3d20ceedc3033832315232d98c1f47fdc6d07e8728d7ec8483d77
10. 0x6a48a0be894332067b010a69b93ab22e22830b8a6213a000c948277031f06e36
11. 0x66882aad6b3b16df979e01689dbfe9a0d190f2c4806046130457fecff6db788e
12. 0x7189e38499a0d36b6f3d244260e4b1d8d20ec79407f4be030531131834122360
13. 0x74ffd6144e8464591ea30392b981f197426cfd361178829fb8a66915e2f727b0
14. 0x3e0ec8a2a8a954695a9b53a4a48a7656d7e3fd6a8795c73b49e2ef05b201ec3f
15. 0x2cf27e8a181d60d0dd27c186c2eddfcbb4e8fa71cf66feeb55a4d730e15ee8c4
16. 0x518b93854db03dc9fc938883abf30da6eaae5ae0d4336903968fd32a7df8c71b
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4