On-chain Contract HTML Verifier

This tool parses the raw HTML of a block explorer contract page (such as Etherscan or Basescan) to determine whether the contract source code is verified and to extract key metadata. It accepts a required html string containing the full page HTML source and an optional url string providing the page URL for additional context about the explorer. The worker analyzes the HTML structure and text to infer verification status, contract name, compiler version, and a representative text snippet that evidences the status. The generated result must be returned strictly as JSON that validates against the system-provided structured output schema, with no extra fields or deviations.