TCD Corporation (formerly Holding BR) is an IT company engaged in the development of modern solutions for the economic and public spheres of activity. Since October 2017, TCD Corporation has been designing and developing a new cryptographic decentralized platform – “Tkeycoin DAO” for payment systems, banking and financial sector. The technology can be used in payment systems, financial services, economy and in all other industries, including state and municipal. Tkeycoin DAO allows you to combine banks, payment providers, payment systems, corporations and users with software solutions based on the TBP Protocol (Tkeycoin Blockchain Protocol) implementing affordable and instant payments worldwide. The decentralized platform of Tkeycoin DAO uses quantum-stable digital signatures and anonymous networks, thanks to which there are no blocking by third parties and regulators. All assets are protected from hacking, and transactions are encrypted by the encryption system Iron Atom Technology with digital signature RSA-2048, combined with elliptic curves Curve25519, recognized by the US national security Agency. Users can be assured of personal and financial information. All data is anonymous and transactions are encrypted. Information about the operation, account balances is available only to the user.