Evidence row 1791372

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://minty-sprout.onrender.com/v1/base-contract-brief"
    ]
  ],
  "name": "Foundry",
  "owner_address": "0x11dced0487ca3e7d9032029dcb302253ccf4e0de",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x11DCED0487cA3E7d9032029DCb302253ccF4e0DE",
        "scheme": "exact"
      }
    ],
    "description": "Base contract brief: base-contract-facts plus a plain-English explanation of who controls the contract and what they can do (mint, freeze, blacklist, change fees, upgrade the code), with things to verify. Grounded only in on-chain facts; never investment advice. Input: 0x address.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "input": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "brief": {
                "summary": "USD Coin (USDC) on Base: an upgradeable proxy token with about 4.29 billion supply.",
                "things_to_verify": [
                  "Who holds the owner and proxy-admin keys"
                ],
                "what_the_controller_can_do": [
                  "Mint new tokens",
                  "Pause all transfers",
                  "Blacklist addresses",
                  "Replace the contract logic"
                ],
                "who_controls_it": "A single externally owned account is owner; a separate account administers the proxy."
              },
              "facts": {
                "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                "code_size": 1852,
                "control": {
                  "owner": "0x3ABd6f64A422225E61E435baE41db12096106df7",
                  "owner_is_contract": false,
                  "ownership_renounced": false
                },
                "is_contract": true,
                "observations": [
                  "upgradeable proxy: logic can be replaced (admin is an externally owned account)",
                  "owner-side mint function present: supply can grow",
                  "pause function present: transfers can be frozen"
                ],
                "paused": false,
                "powers": [
                  "blacklist",
                  "burn",
                  "mint",
                  "ownership",
                  "pause",
                  "upgrade"
                ],
                "proxy": {
                  "admin": "0x4fc7850364958d97B4d3f5A08f79db2493f8cA44",
                  "implementation": "0x2Ce6311ddAE708829bc0784C967b7d77D19FD779",
                  "type": "zeppelinos"
                },
                "token": {
                  "decimals": 6,
                  "name": "USD Coin",
                  "symbol": "USDC",
                  "total_supply": 4290041494.13
                }
              }
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "input": {
                      "description": "Base contract address, 0x + 40 hex characters",
                      "maxLength": 8000,
                      "type": "string"
                    }
                  },
                  "required": [
                    "input"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "brief": {
                      "type": [
                        "object",
                        "null"
                      ]
                    },
                    "facts": {
                      "properties": {
                        "control": {
                          "type": "object"
                        },
                        "is_contract": {
                          "type": "boolean"
                        },
                        "observations": {
                          "type": "array"
                        },
                        "powers": {
                          "type": "array"
                        },
                        "proxy": {
                          "type": [
                            "object",
                            "null"
                          ]
                        },
                        "token": {
                          "type": "object"
                        }
                      },
                      "type": "object"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-31T22:32:16.25Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-31T22:32:16.052Z"
    },
    "resource": "https://minty-sprout.onrender.com/v1/base-contract-brief",
    "serviceName": "Foundry",
    "tags": [
      "base",
      "smart-contract",
      "token",
      "security",
      "explain"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Base contract brief: base-contract-facts plus a plain-English explanation of who controls the contract and what they can do (mint, freeze, blacklist, change fees, upgrade the code), with things to verify. Grounded only in on-chain facts; never investment advice. Input: 0x address."
}

What the leaf hashes

{"body":"4a9136e6053f7c0f50a2c391d507d1839a0a221e5d090746a14eaadea0ff7cc9","id":1791372,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793559982564310,"prev":null,"subject":"x402_bazaar:https://minty-sprout.onrender.com/v1/base-contract-brief","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-01 (302406 rows).

1. 0x1646886a5cf8ee25ca8055425c84c1d8bdc567cde7f67a52d044e96484103a75
2. 0x815351f0f6ef9f14896699093b7ff4e0d4c2e529e7eb3215d93a7441a39f97d9
3. 0xf186fb4aa5f9167ce077f842f6c8b225dafda74645287f1c0af232e868e06ddd
4. 0xa831acfda27c7bbfbe7f8ec99fb607edb216b96c40cd10760006f4a5f98d2817
5. 0x18e201f43895c93e75d65050e72a8a0c2c869d40a281b347cc1382ba1862913d
6. 0x9e54a8a481da49907adb282c2a5f31bcd5405c67bd8e07e7300d1ee8044306b6
7. 0xd9161f55bde0ce332ae912c92ea9856ba53d92ce5fcfc6e8fe59f25878d5e559
8. 0x6072e8970cd5a949393089ccfd68155afe2e10198bfdafe3a320a2ba113a7a45
9. 0xed1cb6757ed34632f443b0ac912aeac1c296b9ae5bf9eab53d2e66ee2f946ab7
10. 0xc25452c6afc4ade66db6e362866babd8c39f24cbe1c2c3704d549e495a1b2f9d
11. 0x018b7b72ff6ab8c4c9bfb82f3613275d49bef50f924d312943209d9a949a9e1d
12. 0x66891ed1e5e8c32c74d3587c22015ee559aeb6a8e98b7d712d5c323d012e46a0
13. 0x10405c22dbe2ed0ca6e6cc381b8fb16e2b184181ad6bf0dbf94a86aec4f16b97
14. 0xa4d26e861503b80bb91bc89e98fcc6daf0fcf003f5a144540ccd91637ccdc11f
15. 0xf1aed005f71411c0df252d9623f284bcac7de199e24c4d4cd5df3e8d3348d3aa
16. 0x5cf5a0a57795246f996e480f05ed085c19d02f7d6e8fc3ddc392412466554f0f
17. 0x02b3554752e71a19b12d7a76dbff436e85387226ceec89fdebdcdaf0122c2932
18. 0x1973893697931b7512ae5dc1a3c92ef92f633ae3574dce9029a35b5e94d2d364
19. 0x3315fd2757fdd435852cc277377234a3f3909a6d2a089d0e36f6d59aacfda910

Day root

0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3

Chained

0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4

Published

On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90