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.
Metal (MTL) is a blockchain project that wants to simplify cryptocurrencies and make them more accessible to the general public. Metal aims to allow users to transfer money instantly around the globe with nothing more than a phone number. Earn rewards every time you spend or make a purchase. Ditch the bank and go digital. Check out CoinBureau for the full review of Metal.