LinkEye is a set of independently developed credit sharing alliance chain solution based on block chain technology. Through the deep integration of blockchain technology and credit economic model, the list of trust-breaking persons is shared among members of the alliance, and all islands of credit investigation data are connected in series to form a real, reliable and wide coverage of the whole society credit investigation database, effectively promote and improve the social credit system, and finally realize the equality of all people in front of credit. LinkEye adopts the combination of symmetric encryption and asymmetric encryption to ensure data security, and adopts digital signature technology to ensure information integrity and authenticity.