I am expanding my existing payment module to accept and send Bitcoin and need a complete transfer layer built with React on the front end and Node.js on the back end. The solution will plug straight into my current codebase (no third-party gateway) and must speak directly to the BlockCypher API... (Budget: ₹250000 - ₹500000 INR, Jobs: AngularJS, API Development, Bitcoin, Blockchain, JavaScript, Node.js, PHP, Web Development)