Evidence row 547839

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://aizamon.com/x402/v1/chain"
    ]
  ],
  "name": "Base chain id",
  "owner_address": "0xb88544cf8e9e97eeb2f313e0d3528fc1e50c2887",
  "raw": {
    "accepts": [
      {
        "amount": "5000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "amountUsdc": 0.005,
          "assetTransferMethod": "eip3009",
          "intentId": "594ba3d9-1eef-434c-8a24-d1e5e8276a80",
          "name": "USD Coin",
          "resourceUrl": "https://aizamon.com/x402/v1/chain",
          "sku": "SKU_AG_CHAIN_01",
          "version": "2"
        },
        "maxAmountRequired": "5000",
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xB88544cF8E9E97EEb2F313e0D3528FC1e50C2887",
        "scheme": "exact"
      }
    ],
    "description": "Get the Base chain id, 8453. One call confirms the network. $0.005 USDC. Included in the hour pass. Includes a signed Base fact you can check with the published receipt key. Includes a signed Ed25519 receipt you can check with the published key.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {},
            "type": "http"
          },
          "output": {
            "example": {
              "ok": true,
              "protocol": "x402",
              "result": {
                "fact": {
                  "algorithm": "ed25519",
                  "format": "aizamon-chain-fact-v1",
                  "payload": {
                    "blockNumber": "12345678",
                    "chain": "base",
                    "chainId": 8453,
                    "method": "chain"
                  },
                  "publicKeyUrl": "https://aizamon.com/.well-known/receipt-oracle.json",
                  "signature": "ed25519-signature"
                },
                "network": {
                  "chain": "base",
                  "chainId": 8453,
                  "ok": true
                }
              },
              "sku": "SKU_AG_CHAIN_01"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET",
                    "HEAD",
                    "DELETE"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {},
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "ok": {
                      "type": "boolean"
                    },
                    "protocol": {
                      "type": "string"
                    },
                    "result": {
                      "type": "object"
                    },
                    "sku": {
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-27T13:41:05.677Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-27T13:41:05.433Z"
    },
    "resource": "https://aizamon.com/x402/v1/chain",
    "serviceName": "Base chain id",
    "tags": [
      "chain id",
      "base",
      "x402",
      "chain",
      "chain-id"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Get the Base chain id, 8453. One call confirms the network. $0.005 USDC. Included in the hour pass. Includes a signed Base fact you can check with the published receipt key. Includes a signed Ed25519 receipt you can check with the published key."
}

What the leaf hashes

{"body":"3b4d1751f57c4947ea79f84e03693fd41ece4b1829d8f8c1bef870acef505918","id":547839,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793133216130210,"prev":null,"subject":"x402_bazaar:https://aizamon.com/x402/v1/chain","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. 0xabdb3de5c3dde77273c0f38c08ac0320451641726b02e4e8ab5de76dfeb3c59e
2. 0xd5f36b53964d13ccc4d988fb3c92a78f59f8306d84e83970f6f738da0286ab21
3. 0x2a2b64d0f0d3c8b651c1c5bcb61997f4d4c6ca1a454e82906e82cc95936a0b51
4. 0xa2d668e1584254a24e66b835fc78e536497cf6d1b8d2b5b9ce4d7e45b27b0619
5. 0xceb8aee1755ca08ca2b90bd278398a68137a0e028fedf1acbd49cd1ad34402c0
6. 0x34825a81201c0ff373a4d3b1cef112a140b926b5c38f19784eabdffadab9c374
7. 0xedccbbf8a89a56404a1e04dd62915594f4c938a45cbba1ec775a75651f97d4c5
8. 0x9fa123284e58c446da5ad4137e929458e7d86c2975b631a73d829728da2c946f
9. 0xba188634d27ac0831243d609ba68a1e9f395396d18912e3140b2d46c340163ea
10. 0xb99ed8d48f75c12e3311a95cda7ae609a7787fc0cff00f4e1f2669254f022ce5
11. 0x59cb41ec7d9ac9c74e0f576f6d9ea1041f1f440ad9c2ec9f6107b51d598a3ef5
12. 0xe58ece954b3b0e80c16db5967815baeb4102983fd3dbc48dbb6146da839f558b
13. 0x5e700087f2a5e8fb7372f2c2db037d66942006d666bb45dd92f745011295fa7b
14. 0x98c6ed3e7b5bb7f1757a8660af410226a11dd563bf83010040c2ce059ab45e54
15. 0xec7bb68216a4deb1960acfbbd75da88f7e468b58adb9cf3ec62f2790e46508b3
16. 0x64c405a28e8819716221eb2529fe4ce277ab08025e17e685cbd5ece75ceb75c7
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4