Computer software platforms for developing, building, and operating distributed applications; Downloadable computer software for use in electronically trading, storing, sending, receiving, accepting and transmitting digital currency, and managing digital currency payment and exchange transactions; Computer software platform for crypto and digital currency software and protocols; Downloadable software in the nature of a mobile application for Crypto and digital currency mobile application; Computer software and platforms to protect against fraud in financial transactions, blockchain transactions and distributed ledgers; Computer hardware, software and firmware for authenticating transactions and user identification; Downloadable computer software, namely, software in the fields of digital security and database access management for use in validating transactions and user identity; Decentralized digital identities; Decentralized token review; Computer software for fraud protection and transaction integrity, digital identities, digital identity certificates, and decentralized digital identities; Cryptocurrency, securities tokens, utility tokens; Utility tokens utilized to facilitate integrity of and protect against fraud