The Ad Tech ecosystem is highly fragmented, opaque and full of fraud and planning-delivery discrepancies. There is structural incentivization for participants to simply "check the box" when it comes to providing a a clean supply chain, and thus not solving the problem. AdProv is providing a platform that only allows whitelisted, authenticated and fraud-free media, data and users by identifying the source and type of fraud and preventing it from delivery. By using Hashgraph distributed ledger technology, we analyze and clean up your supply chain in real time. At a speed of more than 500,000 impression-level transactions per second.