Conflict-free Replicated Data Types (CRDTs) are data structures whose network replicas can be updated concurrently and independently without replicas coordinating, with the guarantee that all inconsistencies can be resolved. OrbitDB utilizes CRDTs for conflict-free database merges and a decentralized peer-to-peer protocol for storage.
OrbitDB is derived from the Orbit chat application which is built on the InterPlanetary File System (IPFS) protocol. The IPFS protocol functions like a distributed CDN. It was developed by Samuli Pöyhtäri in Berlin and funded by Protocol Labs. Samuli then founded Haja Networks. The OrbitDB project is now fully under Haja Networks.
Checkpoints are not explicitly supported. However, information is persisted on the IPFS network.
All storage is backed by conflict-free replicated data structures. The storage model can be extended by the user.