42 Design and development of virtual reality software; Cross-platform conversion of digital content into other forms of digital content; Certification (quality control) using non-fungible token; Software as a service (SaaS) for use in relation to providing digital platforms for digital arts, encoded collection, non-fungible token and application token, search of non-fungible token market and auction; Platform as a Service (PaaS) for use in relation to providing digital platforms for digital arts, encoded collection, non-fungible token and application token, search of non-fungible token market and auction; Providing temporary use of on-line non-downloadable software for electronical transaction, storage, transmission, receiving, acceptance and transmission of digital currency, encoded collection, non-fungible token and application token, and management of digital transaction