An extensible abstraction layer that unifies access to permissionless and permissioned blockchain systems and provides an asynchrounous API to its clients focusing on tasks to handle the uncertainty of transaction durability in blockchains.
A case-study that shows how the Smart Contract Locator (SCL), the Smart Contract Description Language (SCDL), and the Smart Contract Invocation Protocol (SCIP) can be used in combination to support the integration of heterogeneous multi-blockchain setups into client applications.