Evidence row 3064551

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": "2026-11-04T18:59:02.939Z",
    "quality": {
      "l30DaysTotalCalls": 6,
      "l30DaysUniquePayers": 4,
      "lastCalledAt": "2026-11-04T13:07:16.496Z"
    },
    "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":"2db429725acb5bb4d3686190d7feb2f615fb738d0f59c67b2846a34134f16f83","id":3064551,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793822229435681,"prev":2633281,"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 2026-11-04 (424109 rows).

1. 0x6299b3cef51e86b667a54f2ec7c485c69d5ece45a8d48859d860b5c7eb995e87
2. 0x3a552ebaa92c6cee072728191abdafaf9037ad4ea6d3170422826be1a52bca24
3. 0x063ce93fd42ee016f1158f47f3b0c13355460bf5abc449ba1d7450c3e296e820
4. 0x42858563de09853f7a7c1a378b35753aaa172c9bcb2f596e692bd9c8cc0a006e
5. 0xe7eaaa7e9bc8dde671347fc89a3dc02c190219456795302f54b6f0551aae28c3
6. 0xba6645709613fffd31f8a486aec4ff8bf8d7d4e8bef7ecf3f874777f3dd0890d
7. 0x26e8379a0a28837ca956d3457923751e7864768ebc2c5b4ca23c8135049a4d9d
8. 0x9335f4bc02c8c45461d8ccf722861a4969ef364a5879a8ca5cb778c5de9cbffe
9. 0xd479031f6bc3f8c6df252073ceb7827536320939dc4b0e74bc1fdbebd40e96a5
10. 0xc44c49385fc77c5e1461232d96f419ee7b4f9e85c655a8991ea557281566f49f
11. 0x59b216637003c467c4114edc358cd3d33054e7814be95604bb6435c5cc894860
12. 0x99c1feeb7b0b0035c53ff893a10228b760708f176b1ce42f5e7dd0a604a00442
13. 0xbb5dca07106fdb0c308e2d8004cd4d6c885cc3e15a96807f75bd29d6d805aa23
14. 0x4c6a239112152a196e534957ed4fc38d90b1a49e17c6ec6aeb24e15cf6f3a341
15. 0xef57a5030e9f74924772ed82f2ec9d81269d0f11488e66c967d5fe90d002634f
16. 0x5c295f44fee7844fe001921189101c73d5ab26f05805bf5587a5f0e5ee351912
17. 0xd8e00ce5342a08a947d0a4806e7254d076614766392d88153d93cf58ae69cf8b
18. 0xc3c363818e1d5142c4629be55f1c9e168a7466e628cfd2a858fe171aff1e91ca
19. 0x10067354f57fa0cd86b7423e67cc1c7d107d7c9c6823df5246c4fb63b60575e5

Day root

0xd4eed8c0ea3c90ec6f262b19fcc3b849f30cb82a0f84b8b89569e48af7d0c1ee

Chained

0x59305749c32724a02a23c368834d8a36ae9908da93a915e2962fffe01b4e591b

Published

On Arc Testnet, block 70772483: 0x813d56041c1efd407e56047129b597b154a1cb26458bb2768fd0a4630ac97345