Downloadable audio recordings featuring music authenticated by non-fungible tokens (NFTs); Downloadable audio recordings featuring music and art authenticated by non-fungible tokens (NFTs); Downloadable multimedia file containing artwork relating to text artwork, audio artwork, and video artwork authenticated by non-fungible tokens (NFTs); Downloadable multimedia file containing artwork relating to modern art; Downloadable multimedia file containing audio relating to modern art; Downloadable multimedia file containing text relating to modern art; Downloadable multimedia file containing video relating to modern art; Downloadable music files; Downloadable music files authenticated by non-fungible tokens (NFTs); Downloadable video recordings featuring modern art; Downloadable video recordings featuring music and art authenticated by non-fungible tokens (NFTs)