https://jimmysong.substack.com/p/lsat-paying-for-api-calls-one-at
Programming Bitcoin Book: https://amzn.to/2F2DzIj
The Little Bitcoin Book: https://amzn.to/2ZiW0SQ
Seminar: http://programmingblockchain.com/
Newsletter: https://jimmysong.substack.com/
Medium: https://medium.com/@jimmysong
Twitter: https://twitter.com/jimmysong
Github: https://github.com/jimmysong