What is Copay? Copay works as a bitcoin wallet and not an account service. You can either use multiple signatures to protect your personal funds 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. The group must approve each transfer before money can be sent. – Manage shared money with friends or coworkers. Share a wallet with your child and introduce them to bitcoin. Copay makes sharing a wallet simple and secure. COPAY APP SAVES YOU TIME AND OFFERS A RANDOM SYSTEM FOR ADDRESS MANAGEMENT. Copay secures multiple wallets for bitcoin, so business and private users can keep their money separate. 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). Copay securely verifies the transaction when you send money via Payment Protocol to merchants. TESTNET SUPPORT FOR DEVELOPERS Copay includes native support for the Bitcoin Testnet, perfect for testing new bitcoin applications across multiple platforms. Copay makes it easy for developers to test, demo and deploy bitcoin applications. It supports multisignature (P2SH), multiple wallet support, and is a great way to get started. OPEN SOURCE, NO EXCEPTIONS Not only is the Copay app open source, the server is too. Enterprise and high-powered users can manage their finances in full control by deploying their own Copay apps or 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.