The World's Academic & Career Development Ledger. Empowering 7 billion learners to connect to world's top academic education and professional development opportunities on the Ethereum blockchain. We apply principles of open source to re-engineer the current-state educational model by building a system to enable better business and education sectors collaboration. The OS.University DApp bridges the gap between businesses and education through blockchain, used for validating and verifying learners’ credentials, and smart contracts, which are managing content purchases, other marketplace transactions, as well as HR processes.