Evidence row 71450

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://base-token-check.fly.dev/v1/transfer-check"
    ]
  ],
  "name": "Base Transfer Risk",
  "owner_address": "0x540c2aa2526c9c8c2fb4632f0fed668c36424cd5",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x540c2aA2526C9c8c2fb4632f0fED668C36424Cd5",
        "scheme": "exact"
      }
    ],
    "description": "Check a Base ERC-20 for a honeypot-style transfer cost before a swap or send. Input: one token address. Output: allow, warn, or block. Block: not a contract or not an ERC-20. Warn: bytecode contains taxFee, liquidityFee, sellFee, buyFee, transferFee, isBlacklisted, or maxTxAmount. USDC warns because it contains isBlacklisted(address). A selector does not prove the fee, blacklist, or cap runs on every transfer, and this check does not simulate one.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "reasons": [
                {
                  "code": "blacklist_selector_present",
                  "detail": "Bytecode contains isBlacklisted(address)."
                }
              ],
              "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "verdict": "warn"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET",
                    "HEAD",
                    "DELETE"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "address": {
                      "description": "ERC-20 contract address on Base to check for a transfer fee, blacklist, or max transfer size.",
                      "pattern": "^0x[0-9a-fA-F]{40}$",
                      "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"
        }
      }
    },
    "lastUpdated": "2026-10-10T17:41:56.923Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-10T17:41:56.782Z"
    },
    "resource": "https://base-token-check.fly.dev/v1/transfer-check",
    "serviceName": "Base Transfer Risk",
    "tags": [
      "fee-on-transfer",
      "blacklist",
      "honeypot",
      "tax",
      "max-tx"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Check a Base ERC-20 for a honeypot-style transfer cost before a swap or send. Input: one token address. Output: allow, warn, or block. Block: not a contract or not an ERC-20. Warn: bytecode contains taxFee, liquidityFee, sellFee, buyFee, transferFee, isBlacklisted, or maxTxAmount. USDC warns because it contains isBlacklisted(address). A selector does not prove the fee, blacklist, or cap runs on every transfer, and this check does not simulate one."
}

What the leaf hashes

{"body":"9d75b51b697ed22749b92c5430fca8d747ac492a39713fd2fdba952007b58304","id":71450,"kind":"listing","method":"baseline/1","observed_us":1793025482169711,"prev":null,"subject":"x402_bazaar:https://base-token-check.fly.dev/v1/transfer-check","subject_kind":"source_record"}

Proof

Its day has not closed yet. A day closes ten minutes after midnight UTC; the proof appears here then.