Hello,
I am full-time freelancer, I have gone through your project description .Yes I can complete your unfinished javascript bitcoin mining script & connect it with Coinbase api. I can do it. I am a Software developer with having a good knowledge and 8 years of experience with Software architecture, Software development, Programming, Python, Java, Coding.I am excellent with HTML, Javascript, PHP ,C, C++, C# programming, Python, Java, .Net, Software development, Software architecture, Metatrader, Bitcoin, Ethereum.
I am always happy to work and help you. So hire me if you have projects for me, I can deliver work on time with good quality.
I have completed a lot of projects with 100% client satisfaction and make them happy.
Further discussion will be through chat.
Thank