GFCC is a public blockchain system based on DPOS+POC hybrid consensus mechanism, aiming to build a credible ecological scenario for thousands of application scenarios and hundreds of millions of people. This project focuses on improving the over-centralization problems existing in DPOS, and innovatively proposes a DPOS+POC hybrid consensus mechanism, and has made a lot of optimizations in node voting and final confirmation of transactions. At the same time, through the credit reward and punishment and voting mechanism, it is possible to greatly improve transaction efficiency and resource consumption under the same security conditions.