BHP(Blockchain of Hash Power)is a public chain which is the world's first decentralized digital asset interaction network based on bitcoin hash power credit. By using Bitcoin hash power as a broad agree digital asset value exchange intermediary, smart contracts are used in BHP network to realize the trusted and free interaction and circulation of digital assets and real world’s assets.
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.