Solana-based NFT utility protocol Cardinal announced that it has closed a $4.4 million seed funding round co-led by Solana Ventures and Protagonist, with participation from Animoca Brands, Alameda Research, Delphi Digital, and CMS Holdings. The funds raised will be used to hire staff. Cardinal aims to improve the utility of NFTs by offering NFT use cases such as rentals, staking, and ticketing.