With Elastic, instead of specific use cases, a use case has to be coded by the user of the system in Elastic’s own programming language - Elastic PL.
ARPA is a Secure Computation Network Compatible With Blockchains They propose a blockchain-based secure computation network of Multi-party Computation (MPC). ARPA cryptographically enables private smart contract, unprecedented data-at-use privacy protection, as well as scalable computational sharding.