Light Chain (LIGHT) is designed to be the world’s first double-layer chain. LIGHT network is composed by one prime-chain and numerous sub-chains. LIGHT’s double-layer structure enables an immutable, transparent, and decentralized system to apply to every corner of the world, the very first time, on a scalable and economic basis. We believe LIGHT is one of the key essentials for the next social improvement for mankind. LIGHT’s double-layer structure keeps immutability and transparent super-ledger benefits, while providing a performance level of 100k QPS (query per second), which is suitable for all applications including high-frequency transaction.