42 Authentication of data in the field of cryptocurrency and NFTs using blockchain technology; Electronic data storage; Electronic storage of cryptocurrency for others; Electronic storage of cryptographic private keys; Providing temporary use of on-line non-downloadable software for accessing, reading, and tracking information in the field of data, cryptocurrency, and NFTs on a blockchain; Technological consultation in the technology field of decentralized, self-sovereign web3 hardware, software, security, and storage for data, cryptocurrencies, and NFTs