Copay is a bitcoin wallet that runs on most platforms. Copay is a true bitcoin wallet, not an account service. Secure your personal funds with multiple signatures, or just one. Take security into your own hands and avoid trusting third parties with your savings. Like a joint-checking account, your Copay wallet can have multiple users. Manage shared funds with friends and coworkers. Share a wallet with your child and introduce them to bitcoin. Copay makes sharing a wallet simple and secure.