Grayscale has filed an S-1 registration statement with the U.S. Securities and Exchange Commission (SEC) to launch exchange-traded funds (ETFs) for Polkadot (DOT) and Cardano (ADA). This filing follows the company's previous submission of a 19b-4 form, indicating continued progress in its product listing process. The move is part of Grayscale's routine filing procedures rather than a new application.