Brave's integration of Cardano follows a partnership with Input Output, Cardano’s core development firm, with future collaboration planned around governance features and the Midnight sidechain

Quotes that support claims

Brave Wallet’s upcoming support also lays the groundwork for future work involving Midnight, IO’s privacy-focused blockchain project built around confidential smart contracts and data protection.

Together, the two firms “will integrate Cardano into the Brave Wallet, enabling Cardano blockchain access and token management.”