  This paper presents Thinkey, an efficient, secure, infinitely scalable and
decentralized blockchain architecture. It ensures system correctness and
liveness by a multi-layer structure. In particular, the system is based on a
double-chain architecture and uses a multi-layer consensus protocol to
guarantee consistency. Thinkey also uses a novel account model which is based
on Actor Model to support the complex logic in the multi-chain structure.
Experiment results show that the proposed Thinkey architecture can achieve
higher throughput as the number of nodes increases.
