Evidence row 526864

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://plainchain.appin60.com/v1/fact"
    ]
  ],
  "name": "plainchain.appin60.com/v1/fact",
  "owner_address": "0xb442dacae60c07bb5db8f33c8a6c1572d8f24e83",
  "raw": {
    "accepts": [
      {
        "amount": "1042",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xB442daCAE60C07bb5dB8f33C8a6c1572d8F24e83",
        "scheme": "exact"
      }
    ],
    "description": "A random crypto history fact (Bitcoin genesis, Pizza Day, The Merge, EIP-1559, x402 and HTTP 402, USDC, Base...), picked by the latest Base block hash. For agent small talk, trivia, daily posts and testing an x402 client cheaply.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {},
            "type": "http"
          },
          "output": {
            "example": {
              "block": 36581662,
              "chain": "Base",
              "fact": "On 22 May 2010 Laszlo Hanyecz paid 10,000 BTC for two pizzas...",
              "index": 1,
              "of": 29
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "chain": {
                      "description": "base (default), arbitrum, ethereum or optimism; chain ids 8453, 42161, 1, 10 also work",
                      "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": "2026-10-27T10:11:18.139Z",
    "quality": {
      "l30DaysTotalCalls": 5,
      "l30DaysUniquePayers": 5,
      "lastCalledAt": "2026-10-27T10:11:17.442Z"
    },
    "resource": "https://plainchain.appin60.com/v1/fact",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "A random crypto history fact (Bitcoin genesis, Pizza Day, The Merge, EIP-1559, x402 and HTTP 402, USDC, Base...), picked by the latest Base block hash. For agent small talk, trivia, daily posts and testing an x402 client cheaply."
}

What the leaf hashes

{"body":"dc89ee563040de7773cf5959b035a6474ba8849d9b338244dd18c7c64b6269b0","id":526864,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793124792274240,"prev":452663,"subject":"x402_bazaar:https://plainchain.appin60.com/v1/fact","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. 0x57016cbf3aabe4d6a7bfb9dbee48baf107501abc9d722347ffc5713c5f2f860a
2. 0x3680b77297cb0edb3fb48ad65809414766e69dddbf4fba54405689b8bb2145ef
3. 0xc438e972182e76a596e025646d4170094d2ebfef418f7163ac582f19c3a46ac0
4. 0xa37247a6af32dcdd82589847384502c259fa67fed9a4219f14ae70286a059d1b
5. 0xd1ba92f16e6a9c8300934556dd165d441e69c20f9526869e60c8d8501038d833
6. 0x305d83d690bf8d16af6899f8ebe218194a351ee01123b7c94731489456af5b12
7. 0x431db7411dc96e6e0ee3618d21271a37057e883d95972d4fcf2316c912e713d3
8. 0xc90ab67eedbca078f16ca5d247820babf2a48ad86a3cd7516cd8efbf1eae86c6
9. 0xd1430af3e32f3433a8e8200284f7c09ebc392e1cb7e4aa4a2c16838fd51086fa
10. 0xc69bdb44e5c6b8cf371784b0313363ac72c0c8b7cf2a10203966cbe3857fc7a6
11. 0xaec8530a2e156f659d0929b3462a514a0cf7d2e6669110bb34b6ef56abdae9fd
12. 0xe06cb1b692af263d62f5739bc4ad709ffe5a2576ef5a59a1610d50c03c7b9584
13. 0x906b5f0e8ef1fe7894886d84f460bb3239d5f14b14ad4adff27c7dcea6265169
14. 0x674bc1173d39130be4d15bbfc7327f8a8af87eb251e54c8d4409c7e840b9e538
15. 0xb78ea6a255dd06e2f402a1a733bca392fa6243920bcba95e8b80bdfc6ce5f553
16. 0x3ed50f053eca72dfd3a9d45a11935240bfe691e57835c367ddebe2cbc49efe9d
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4