LINKA is a “value linking platform” that enables everyone to use cryptocurrency, credit card, and other payment methods without any restrictions both in the real world and crypto space by providing inter-usability of value through promoting value circulation.
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.