Kevin Hassett, a key economic adviser to former President Donald Trump, has disclosed ownership of at least $1 million in shares of Coinbase, a leading US cryptocurrency exchange. The financial disclosure document, reported by Bloomberg, indicates these shares are vested, meaning Hassett fully owns them and can exercise, sell, or transfer them freely. Hassett's total reported assets amount to at least $7.6 million, according to the broad valuation range used in the declaration.