Evidence row 4166395

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.novarithm.com/agents/v1/payments/usdc-balance"
    ]
  ],
  "name": "USDC Balance on Base",
  "owner_address": "0xe414ad5c7542ce63d890526f0e2133ff8da6f22d",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xe414aD5c7542CE63D890526f0e2133ff8da6F22D",
        "scheme": "exact"
      }
    ],
    "description": "Current USDC balance of an address on Base or Base Sepolia (balanceOf on the official Circle contract).",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "address": "0xe414aD5c7542CE63D890526f0e2133ff8da6F22D"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "data": {
                "address": "0xe414ad5c7542ce63d890526f0e2133ff8da6f22d",
                "balance_raw": "0",
                "billing_unit": "address",
                "block_number": 52980236,
                "chain": "base",
                "chain_id": 8453,
                "generated_at": "2026-10-23T10:03:40Z",
                "price_usd": 0.001,
                "response_time_ms": 227,
                "source": "eth_call balanceOf on the official USDC contract",
                "sources": [
                  {}
                ],
                "usdc_balance": 0,
                "usdc_contract": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913"
              },
              "service": "usdc_balance"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "address": {
                      "description": "Address (0x...)",
                      "type": "string"
                    },
                    "chain": {
                      "default": "base",
                      "description": "base (default) or base-sepolia",
                      "enum": [
                        "base",
                        "base-sepolia"
                      ],
                      "type": "string"
                    }
                  },
                  "required": [
                    "address"
                  ],
                  "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"
        }
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1793688678/bazaar-icons/d9c569891dbe991d.png",
    "lastUpdated": "2026-11-08T06:12:18.263Z",
    "quality": {
      "l30DaysTotalCalls": 9,
      "l30DaysUniquePayers": 4,
      "lastCalledAt": "2026-11-08T06:12:30.153Z"
    },
    "resource": "https://api.novarithm.com/agents/v1/payments/usdc-balance",
    "serviceName": "USDC Balance on Base",
    "tags": [
      "usdc",
      "balance",
      "base",
      "wallet",
      "agent-payments"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Current USDC balance of an address on Base or Base Sepolia (balanceOf on the official Circle contract)."
}

What the leaf hashes

{"body":"092a436a942e4e57ad8dba7b8afe7eb8de14f0f28a417e969eb5c40a85dfe8d2","id":4166395,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1794170518747571,"prev":3764883,"subject":"x402_bazaar:https://api.novarithm.com/agents/v1/payments/usdc-balance","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-08 (183509 rows).

1. 0x3f763d5567cd3ea56898e889e530f11e85518fa1db375086f88f437c660133a3
2. 0x8a32ec4f884eb9e9aedc171d2fae6068ba0b702a8b5e2772d9cd6523f58232cc
3. 0xfdc8089f0907813ea8889ee06920db4e6962551f9426b66a0d2494668554d938
4. 0xbadcd08cd06c6bb4787ccf4bbc0eb2716c1a7a0186a683286c1f876672a16407
5. 0x60643ba8a349747f2410c1667f4571f80b70f35398a331c9e23231a8128adf1c
6. 0xb9d7300fc2eaeb04a05d913be796884e514e3fe189ceb18577b205e5cc138d01
7. 0xa5b4841dca74635528c948dfdafe20402341b4c7042e39f50a5ccd2c8b1497a6
8. 0xc9084d51c68361deffb42c6bea90394fe28639795439b55c15125e273a88e79c
9. 0xee871f739d3d1f3d62447ccdb7fbd82954fac0ea558c4a57e1d98671494efd95
10. 0x71b88b35e8894822d4ddd59fa71c80b9d68889a60b7295ba31ce8533c6be82fd
11. 0x4377846eb681bf4fcd10fc375884bd053ee8f3ffdc7f96ea290a1a6c0f79639b
12. 0xad10f207e5f5678fd11aaa925118e5c9dad34e915fde24308526c2df5d298b34
13. 0x9176bb9c7a66d77dbb2d5ab39024e0ec239c0ade5478c76b91f602be7e636a22
14. 0x7585bf5e878e4f1150b949b7ccef0bcb5db59f096ef10bd6653e962f2f672260
15. 0xbd5012f0886fab2c6ae15982e759fb236dafac6691167365aad233adc7665695
16. 0xa7cc80a77a1b416226547039db612cda546cf3ee48ee502328ff0f2b646ced86
17. 0x2031bf8fabeeff87db710efedafb2b06df0de0b25ca93fb078786a0ebfe9bbc5
18. 0x1f0ff2af9da38fef1beef5d2dbcf41f592dca17729b7ab9b9c0b6ef354dc3b83

Day root

0xbf84ec37f88c5f23d2144bd7dbc1ea0f8edc93b3764a885a7164b7923ff3460b

Chained

0x9fea188e4965f50de727e97c40e18d5ff2c2ddbfd4f1ae65e22ddd6f676bccfc

Published

On Arc Testnet, block 71451618: 0xb5273480942a54cd07f291b8319e59976f8d9d0583181c764eed04c9b3f7a022