ARPA is a Multi-Party Computation ("MPC") enabled blockchain-based layer 2 solution for privacy-preserving computation. ARPA was founded in April 2018 with the purpose of separating data utility from ownership and allowing data rental. ARPA's MPC protocol allows numerous entities to collaborate on data analysis and data synergies while maintaining the privacy and security of each party's data input.On ARPA-compatible blockchains, developers can create privacy-preserving dApps. Credit anti-fraud, secure data wallets, precise marketing, cooperative AI model training and key management systems are some of the use cases. Banks that use the ARPA network, for example, can exchange their credit blacklist with one another for risk management purposes without revealing client data or privacy.Arpa is a widely usable layer-2 solution that is blockchain agnostic. Proxy smart-contracts serve as a connection point between the blockchain and a secure communication network. The ARPA token can be used to pay for computations, data and model usage fees, security deposits, and community governance.