How does Copay work? Copay a Bitcoin wallet that isn’t an account service. You can either use multiple signatures to protect your personal funds or just one. You can take security in your own hands and not trust third parties when it comes to your savings. Copay wallets are similar to joint-checking accounts. You can have multiple users. Each transaction must be approved by the group before it can be sent. – Share funds with coworkers and friends. To introduce bitcoin to your child, share a wallet. Copay makes sharing a wallet simple and secure. COPAY APP STORES SMALL, DIFFERENT BTC Wallets. This allows both business and privacy-conscious users the ability to securely store multiple wallets. You can manage your personal, business and testnet wallets all from the same app. Copay uses hierarchical-deterministic (HD) wallets, allowing for secure in-app wallet generation and backup. SECURE PAYMENT VIRIFICATION Copay is the first bitcoin wallet to support the full Bitcoin Payment Protocol. (BIP 0070 – 0073). Copay verifies your payment when you send money to a Payment Protocol merchant. TESTNET SUPPORT For Developers Copay has native support to the Bitcoin Testnet. This makes it easy for developers to test new bitcoin applications across different platforms. With multisignature (P2SH) and multiple wallet support, Copay makes it simple for developers to test and demo bitcoin applications without fumbling between other mobile apps. OPEN SUBSOURCE, NO EXCEPTIONS Copay is not only open-source, but the server as well. Enterprise and power users have the ability to take complete control of their finances and deploy their own versions of the Copay apps as well as Bitcore Wallet Service. Dozens of bitcoin developers have already contributed to Copay, and we're not finished yet. Every component of Copay is open for review and improvement by the community.