Ontology is an open source blockchain that specializes in digital identity and data. It offers high performance and supports robust cross-chain collaboration and Layer 2 scalability. Businesses can design a blockchain that suits their needs using Ontology's flexible infrastructure. Ontology provides decentralized identity and data sharing protocols to enhance speed, security, and trust. Its features include ONT ID, a mobile digital ID application, and DID used throughout the ecosystem, as well as DDXF, a decentralized data exchange and collaboration framework. Ontology adopts a dual-token model with ONT and ONG as utility tokens. This model decouples ONT and ONG to mitigate the risk of volatile fluctuations in the native "asset" value on gas fees. ONT is used for staking, while ONG serves as a value-anchoring tool for on-chain applications and transactions.