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What is Copay? Copay works as a bitcoin wallet and not an account service. Secure your personal funds with multiple signatures, or just one. – Secure your personal savings by taking control and trusting only yourself. Like a joint-checking account, your Copay wallet can have multiple users. Each transaction must be approved by the group before it can be sent. – Manage your shared funds with coworkers or friends. To introduce bitcoin to your child, share a wallet. Copay makes sharing a wallet simple and secure. COPAY APP DOES NOT REQUIRE TEDIOUS ADDRESS MAINTENANCE. Copay securely stores multiple bitcoin wallets. It allows both privacy-conscious and business users to keep their funds separated. The app allows you to manage personal, business, or testnet wallets quickly and easily. Copay uses hierarchical-deterministic (HD) wallets, allowing for secure in-app wallet generation and backup. SECURE PAYMENT VERIFICATION Copay is one of the first bitcoin wallets to support the full Bitcoin Payment Protocol (BIP 0070-0073). When you send money to a Payment Protocol-enabled merchant, Copay securely verifies that your payment will go to the right place. TESTNET SUPPORT FOR DEVELOPERS Copay includes native support for the Bitcoin Testnet, perfect for testing new bitcoin applications across multiple 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 SOURCE, ZERO EXCEPTIONS The Copay app is open source as is the server. Enterprise and high-powered users can manage their finances in full control by deploying their own Copay apps or Bitcore Wallet Service. Copay has been developed by dozens and dozens of bitcoin developers. Every component of Copay is open for review and improvement by the community.