According to Cryptonews, Coinbase CEO Brian Armstrong recently stated that in order to drive cryptocurrency growth, the industry needs to work in four key areas of development. 1. Scalability. A blockchain that can complete at least thousands of transactions per second can make cryptocurrencies mainstream; 2. Privacy. Need to use privacy coins; 3. Decentralized identity. The decentralized application (dapp) in the wallet should automatically identify users, which will enable users to obtain reputation score certification around KYC (know your customers), which can unlock more use cases; 4. Developer tools Makes it easy for developers to build applications, publish them, and distribute them.