TDC is a self-developed traceability system based on blockchain technology. TDC, rooted in the Chinese, Southeast Asian, and European markets, shares lists of untrustworthy individuals among alliance members through the deep integration of blockchain technology and a credit economic model. This connects various isolated credit data sources, forming a credible, society-wide credit database with broad coverage. It effectively promotes and improves the social credit system, ultimately achieving equality before credit. At the level of using technological means to promote the development of a global credit society, the TDC project has epoch-making significance.