Evidence row 118554

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": "2026-10-25T20:42:14.226Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 4,
      "lastCalledAt": "2026-10-25T20:42:13.672Z"
    },
    "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":"db86df0ed61ec20d480cf23ca4f357bc7053b44ad39a8769bdc7d8b357cf7c11","id":118554,"kind":"listing","method":"baseline/1","observed_us":1793025613424777,"prev":null,"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 2026-10-26 (296695 rows).

1. 0x8f772fb3b5ed13f0288829f53417dda5aff948c80a09bb73a2a0dd73b8e3b422
2. 0x30f4212da0b32f82d7f17711bce6389eea918ae0866716384bf7cc9964f4ac49
3. 0x7b5d3123e80c5ea65d92177750020f6b58410a39a24f88b2fd28fb8b758c0764
4. 0xb46b4a1f4511429c384cc380a938dc8a5c1fc1c69a06d2dc8a5284b4e52dee58
5. 0x636172bd493205fa50e93d803365e9b6e560c1a6e7476cfb63748f2909d68161
6. 0xab953eaa71b7d0d1e5be4143ef2e10786b8a2156e7baa8a54c0a59619f85f634
7. 0xfea6338a11e354cd13e9291b497499387fa1e4741fe245d5503ccbcbb203b734
8. 0xce642fca08a4bf7014d6f108d96f18cf1571e0c9a42b6028091e0b70ecde7f7e
9. 0x157b9bfc6bfc169bd02722bf711f0626c972beed263cc5361d38e742e0eb0535
10. 0x008d45ed99bece5d0babf3bd1d6fb4a93a70f99077db6328a9bbfbc9519f9600
11. 0x4ef4c3a70c6b26977cbaf534a1ab9edcc651b2d385e682cd5a3f54a060ec0018
12. 0x4634efb8094d1dd2874013b832ad8653e49400f57bf98efdcc5f925ed08d0f5b
13. 0xc0cb184c9bdf71abcf18fda97bd59289153d120dbf8fee9f517b63bf303deb95
14. 0xf0edabbb9ba0d643e5505d19d07637eb6f6aed0a1c7356af43ae7d84ae9ef0c5
15. 0xf0bd63870f0bb378fa300bd33563050dcb7b3e02b44eb3ee550c1c534ec4b246
16. 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae