The invention relates to a
credit card transmission method and
system based on a block chain. The method comprises the following steps that: an
issuing bank initiates a
credit card issuing transaction, links
credit card issuing transaction information, issues an issuing notification, and links issuing notification information; the notification
bank sends out a sending transaction and links sending transaction information, and the
issuing bank sends out
receipt information and links the
receipt information; the
issuing bank issues an accepting transaction, accepting transaction information is linked up, the notification
bank issues an accepting notification transaction, accepting notification transaction information is linked up, the issuing
bank issues a
payment transaction,
payment transaction information is linked up, the issuing bank pays the notification bank, the notification bank issues
payment state notification information, and payment state notification information is linked up; and the issuing bank receives the payment state notification information and initiates a closed transaction. According to the invention, an extensible block chain front-
end system is introduced, and real-time writing, real-time reading and real-time
verification of related transactions such as credit card issuing, bill sending, acceptance and payment on the chain are realized based on the block chain.