Bitcoin

• On bitcoin and simultaneous block discovery
• Mastering Bitcoin (Andreas Antonopoulos, 2018) - a book on the technicals of bitcoin, published by O'Reilly but available for free on github.
• Bitcoin transaction - details of a Bitcoin transaction, including examples of what the data literally looks like
• Bitcoin and Cryptocurrency Technologies (2016) - textbook that derives Bitcoin's design from first principles, with a computer science slant