Openchain is an open source distributed ledger offered by CoinPrism (also known for Colored Coins). It is suited for organizations wishing to issue and manage digital assets in a robust, secure and scalable way.
Openchain has undergone a large refactoring work for the 0.5 version. Components such as storage engines are now isolated in their own modules. The core server (Openchain.Server) does not have any dependency on any external module anymore. Dependencies are added at deployment time. This allows anyone to extend Openchain by building third-party modules. Modules include: storage engines (such as SQLite and SQL Server), anchoring media (such as Blockchain anchoring) and validation modules (such as permission-based).