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mempool
Explore the full Bitcoin ecosystem with mempool.space, or self-host your own instance with one-click installation on popular Raspberry Pi fullnode distros including Umbrel, Raspiblitz, Start9, and more!
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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
This is a great project! There might be a few approaches to this you can take.I have a small dashboard running on Smashing. Most of the work I have done to get that running is integrating different APIs into the sinatra layer. It is all in Ruby.
Another alternative might be mempool.space. I believe they have an API, but you can also run their software locally, and possibly build queries from that. All of their code is open source on Github. Edit: Memspace is a blockchain explorer, so it might not provide you with the all of the data you are looking for (price, most active coin)