Ontology is a new high-performance public blockchain project & a distributed trust collaboration platform. Ontology provides new high-performance public blockchains that include a series of complete distributed ledgers and smart contract systems. Ontology blockchain framework supports public blockchain systems and is able to customize different public blockchains for different applications. Ontology supports collaboration amongst chain networks with its various protocol groups. Ontology will constantly provide common modules on the underlying infrastructure for differient kinds of distributed senarios, such as those for the distributed digital identity framework, distributed data exchange protocol, and so on. Based on specific senario requirements, Ontology will continue to develop new common modules.