UNO is a fair launch, low inflation, high-hash rate, rare issue cryptocurrency since 2013. Sha256, merge mined with Btc, high hash, 3 minute blocks.
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.