I know Crypto pretty well(also took some courses on Coursera and edX, - "ISEAD Crypto Revolution", Duke Universities' crypto courses, UC Berkeley's "Bitcoin and Cryptocurrencies"), so any topic is ok for me! If you want some charts and quantitative analytics, I take additional $10 per chart(I use Python - Matplotlib, Plotly, Seaborn). As a scientist, I have written a ton of scientific articles(and I have a published paper also!), so high quality guaranteed!