42 Authentication of assets, especially works of art and works of music; Creation of appraisals of assets, especially works of art, real estate, and musical works; User authentication using blockchain technology; Data security services, in particular data encryption services; IT development of smart contracts; Blockchain as a Service [BaaS]; Platform as a Service [PaaS]; Platform as a Service [PaaS], namely, for the sale and purchase and/or auction of assets, or rights thereto; Platform as a Service [PaaS], namely, for managing and validating cryptocurrency transactions using blockchain-based smart contracts; Platform as a Service [PaaS], namely, for minting non- fungible tokens, fungible tokens and semi- fungible tokens related to assets; Platform as a Service [PaaS], namely, for smart contracts; Software as a Service [SaaS]; Software as a Service [SaaS], namely, for the sale and purchase and/or for the auction of assets, or rights therein; Software as a Service [SaaS], namely, for the sale and purchase and/or for the auction of assets, or rights thereto, using blockchain technology; Software as a Service [SaaS], namely, for authentication, encryption and identification in financial and sales transactions; Software as a Service [SaaS], namely, for the management and validation of cryptocurrency transactions using blockchain-based smart contracts; Software as a Service [SaaS], namely, for the minting of non- fungible tokens, fungible and semi- fungible tokens, in particular security tokens, utility tokens or hybrid tokens related to assets; Software as a Service [SaaS], namely, for smart contracts; Software as a Service [SaaS] in the field of digital tokens, digital assets, and digital currencies; Computer services, namely, providing an interactive website with technology that allows users to connect to payment processing platforms; Data certification via a blockchain; Services to ensure secure payment transactions, namely, encryption, decryption and tokenization of data; Authentication of assets; Hosting of a platform on the Internet for trading tokenized assets or rights thereto; Hosting a platform on the Internet for making investments in assets or rights thereto; Platforms for tokenization of assets, as software as a service [SaaS]; Asset search and authentication services; Secure digital transaction services, namely, providing tokenization services to increase security and flexibility in online transactions; Creation of smart contracts; Minting of security tokens (NFTs), fungible and semi- fungible tokens; Creation of tokens