Downloadable music files authenticated by non-fungible tokens (NFTs); downloadable multimedia files containing artwork, text, audio, and video relating to finance, technology, culture, charitable projects, lifestyle, sports, music, art, and community service authenticated by nonfungible tokens (NFTs); downloadable computer software and applications for mobile devices for facilitating and administering banking, payment by credit card, debit card, or virtual payment card, automatic teller machi...