Tweetwise is my attempt to create an automated system for Bitcoin trading, implementing the techniques described in Colianni et al. to build a predictive model based on Twitter sentiment analysis [1].
I spent ~4 months collecting data, based on the methods described in the paper. You can download the data here.
[1] Colianni, Rosales, Signorotti. Algorithmic Trading of Cryptocurrency Based on Twitter Sentiment Analysis http://cs229.stanford.edu/proj2015/029_report.pdf. Web. 20 September 2016.