GLOBE NEWSWIRE - DatChat, a privacy-based social media, has received a notice of allowance from the USPTO for patent application 16/736,858 for a "Blockchain-Based Communication Systems and Methods." The "Blockchain-Based Communication Systems and Methods" covers a blockchain-based communication platform, micro-blockchains for direct peer-peer secure communications, ephemeral micro blockchain messaging, control of messages after being sent, and digital rights management engine.