A somewhat technical explanation of how Bitcoin works. Want more? Check out my new in-depth course on the latest in Bitcoin, Blockchain, and a survey of the most exciting projects coming out (Ethereum, etc): https://app.pluralsight.com/library/courses/bitcoin-decentralized-technology
Lots of demos on how to buy, send, store (hardware, paper wallet). how to use javascript to send bitcoin. How to create Ethereum Smart Contract, much more.

Shorter 5 min introduction: https://www.youtube.com/watch?v=t5JGQXCTe3c

Written version: http://www.imponderablethings.com/2013/07/how-bitcoin-works-under-hood.html

My Bitcoin address: 13v8NB9ScRa21JDi86GmnZ5d8Z4CjhZMEd

Arabic translation by Ahmad Alloush

Spanish caption translation by Borja Rodrigo, zordycorak@gmail.com, DFJWgXdBCoQqo4noF4fyVhVp8R6V62XdJx

Russian caption translation by Alexandra Miklyukova

Italian voice over: http://youtu.be/1aEf3qr7UdE
Italian captions translated by Simone Falcini, 1H5KdCnBooxfqpXtyQBBAKKRU7MkCZCVCe