Chain block is a kind of similar to no ((non-relational database) such technical solutions collectively, is not a specific technology, can be implemented by many programming languages and frameworks block chain technology. And implement block chain type also has a lot of, is common, including the POW (Proof of the Work, effort to prove), POS (Proof of gaining interest), DPOS (Delegate Proof of gaining, authorized shares mechanism), etc.
For the first time, the concept of blockchain was proposed in Bitcoin: A peer-to-peer Electronic Cash System (bitcoins). The author is A person (or group) who claims to be Satoshi Nakamoto. Therefore, bitcoin can be regarded as the first application of blockchain in financial payment.