ChainDD, also known as Liande De, is a global blockchain-focused media, technology solutions, and education company established in January 2018 after separating from TMTPost Group. With offices in Beijing, New York, Tokyo, Chengdu, and Hong Kong, it serves audiences and organizations across international markets. ChainDD is a core developer of China’s Blockchain-based Service Network (BSN) and a core member of its media committee. Its international company is also a founding member of the Blockchain Association Initiative, a United Nations international blockchain alliance.

The company operates a media and information platform covering blockchain, digital assets, and financial technology. Its content includes breaking news, analysis, research, interviews, policy coverage, market data, and specialist topics such as DeFi, NFTs, Ethereum, and industry blockchain. ChainDD also provides technical data services through Six Veins Digital Technology, enterprise blockchain solutions, and blockchain education, including programs for universities. Its offerings extend to industry consulting, professional livestreams, and the CHAINSIGHTS conference series, which brings together participants in blockchain, fintech, and digital finance.