What is Copay? Copay acts as a real bitcoin wallet and not as 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. Your Copay wallet can be used by multiple people, just like a joint-checking bank account. Each transfer must be approved by the group to send money. – 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. 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 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 TO DEVELOPERS Copay offers native support for Bitcoin Testnet. This allows you to test new bitcoin applications on multiple platforms. Copay’s multisignature and multiple wallet support makes it easy to develop and test bitcoin applications. OPEN SOURCE – NO EXCEPTIONS. The Copay app and server are both open source. Enterprise and power users can fully control their finances with their own Copay apps and Bitcore Wallet Service. Dozens of bitcoin developers have already contributed to Copay, and we're not finished yet. The community can review, improve, and develop every part of Copay (wallet and server).