Stock twits is based on the open source twitter API. It has several basic features:
1.) a twitter feed for each coin (search bar for symbols, front page list of a few popular ones) below a graph of that coin's one month price chart (scale-able), Prev Close
3.) Image upload.
5.) graph of post volume for a particular coin.
I am probably missing some feature of it, but you get the idea.
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Hi I just did something really similar to this, please have a look at my profile and look at the Node red tool I can share my screen and show you was was built. Free to chat any time. Richard