Evidence row 452663

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": 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":"d50aeb72c1ac0340199feebea5f3c9795ebd05d8032b957f6b23295cf4d8b314","id":452663,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793100554256323,"prev":118554,"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. 0x94e79385f4c285f5f7baa10f3e670831dd064fafa1bebfede95b203a4e0984f1
2. 0xa1c7cab7c54041743654771ca16f9e0a1d72241a6061ce3c6ee446957a36df3e
3. 0xd2bab5a1b2916d7d14bb7e9861449b058c8487e64b47171ee68c110b4b55a28f
4. 0x500a9ece6f1d7c904799d404be21cd54039edde973dff7913f2ed60c2c94ce48
5. 0xb3067d29398ae9dc714537d6d6f2be80755a67290f1ab5fe836a512e9fac47df
6. 0x554a4e36426abcbf6adef6e24c6b1d24e3adbd66b97201096589db1ad1c48521
7. 0x0c6b375824eed8ed7abeed975f213b893388899b941edecba5432663669bf34e
8. 0x99643227dd5188d40352605aa8087661e9cea1724dbcf5d5e4bd2c49abcfdd51
9. 0x62401c78f839622a699fad89dcbbd3b82008dd5bda82cb52fec25793a28fb24d
10. 0x88feef9b2933522158e98d853eaf22bd6bb0c0e8aba56b399d7b5895627cadd2
11. 0x04a09d663456ff3951851256dd93fd8bffe97c065373b0fa7994aee5fd52c4a7
12. 0x747fb8d60cfe8dde3cb6d73475c58c3912bdf8d928b8f0480aa1c97a1b71d408
13. 0x59c5c792b40d9054ce2b84a60af97fa54f2e1a2a369a6a52dc3f45de41128e97
14. 0xa3c9c760ee424c178bab782711c2b9d3e15a80a6fde99165972cb75b306bb8b4
15. 0xb4f7223140c8a36cb87a63d77cf617086d9968dc4658f03e102571ebe06e9ed6
16. 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4