42 Services to facilitate authentication of artifacts, collectibles, and artworks, including paintings and sculptures, using nonfungible tokens to access uniquely verifiable information; Services to facilitate authentication of watches, jewelry, and leather goods, including leather bags, leather wallets, leather belts, leather shoes, and leather inserts in clothing, using non-fungible tokens to access uniquely verifiable information; Non-downloadable software for generating non-fungible tokens for authentication and sale of artifacts, collectibles, and artworks, including paintings and sculptures; Non-downloadable software for generating nonfungible tokens for authentication and sale of watches, jewelry, and leather goods, including leather bags, leather wallets, leather belts, leather shoes, and leather inserts in clothing; Services to facilitate real-time authentication of digital images, using real-time authentication links provided with the digital images; Real-time authentication of digital images, using links provided with the digital images