What is Copay? Copay acts as a real bitcoin wallet and not as an account service. Secure your personal funds with multiple signatures, or just one. Secure your savings and take control of your security. Your Copay wallet can be used by multiple people, just like a joint-checking bank account. Each transaction is approved by the group in order to send money. – Share funds with coworkers and friends. Share a wallet with your child and introduce them to bitcoin. Copay makes it easy and secure to share a wallet. NO MORE TEDIOUS ADDRESS MANAGEMENT The Copay app securely stores multiple, distinct bitcoin wallets, allowing both business and privacy-conscious users to keep funds carefully separated. Manage personal, business, and testnet wallets easily, all without leaving the app. 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. Copay makes testing and demoing bitcoin applications easy with multisignature support (P2SH), and multiple wallet support. OPEN SOURCE. NO EXCEPTIONS. Not only is Copay’s app open source, but so is its server. Enterprise and power users can fully control their finances with their own Copay apps and Bitcore Wallet Service. Copay has been developed by dozens and dozens of bitcoin developers. The community can review, improve, and develop every part of Copay (wallet and server).