What is the payment method ck of opera system?

Travel payment network. Rare customer chain (CK) is a new generation of distributed travel payment network based on the underlying technology of blockchain, which is committed to transforming the traditional international tourism industry and establishing an open-source, open and collaborative distributed international tourism trust ecology. By constructing the underlying technical architecture based on blockchain, the current tourism payment industry will be completely subverted and reconstructed, thus establishing a better tourism ecology. Opera property management system is a management system for hotel industry. The system has the characteristics of automatic reservation, quick personalized check-in, integrated PDA function and remote check-in.