MegaETH is the first real-time blockchain, where cryptographic applications can fully leverage its potential with ultimate performance. MegaETH is secured by Ethereum and supported by a highly optimized heterogeneous architecture execution environment. It provides streaming throughput with a latency as low as 10 milliseconds and up to 100,000 TPS. Developers can extend applications through real-time state streaming, while users can obtain instant transactions while retaining full Ethereum composability.