Providing temporary use of on-line non-downloadable software for storing, managing, and accessing personalized digital keepsakes; Providing temporary use of on-line non-downloadable software for storing, managing, and accessing personalized digital keepsakes, namely digital keepsakes derived from physical greeting cards; Providing temporary use of on-line non-downloadable software for storing, managing, and accessing personalized digital keepsakes and non-fungible tokens (NFTs) linked thereto; Providing a web site featuring technology that enables users to store, manage, and access personalized digital keepsakes; Providing a web site featuring technology that enables users to store, manage, and access personalized digital keepsakes, namely digital keepsakes derived from physical greeting cards; Providing a web site featuring technology that enables users to store, manage, and access personalized digital keepsakes and non-fungible tokens (NFTs) linked thereto