Computer software for processing digital images; downloadable e-wallets; computer software for issuing, trading, selling, managing and verifying tokens of value for ownership and license for blockchain-based digital contents; computer programs for virtual goods; interfaces for metaverse; security tokens; downloadable multimedia file; downloadable multimedia files containing artwork, text, audio and video for entertainment authenticated by non-fungible tokens (NFTs); downloadable image files; downloadable digital video recordings; downloadable computer graphics; recorded data files featuring metadata containing digital asset information; downloadable image files featuring virtual goods; virtual cars; downloadable image files featuring character images for virtual environment; downloadable image files featuring avatars for virtual environment; downloadable image files featuring virtual merchandise such as clothing, shoes, bags, headgear, eyewear, sports equipment, works of art, paintings, toys and robots for virtual environment; downloadable image files featuring virtual cars for virtual environment; recorded data files in the form of blockchain-based non-fungible tokens