Blockchain and Cryptocurrency Books discussion

99 Cent Blockchain or Die E-Book Sale! If you heard of cryptocurrencies like Bitcoin or Ethereum but don't understand how they work, Blockchain or Die is the book for you. Cryptocurrencies and blockchains are the technology and money of the future. There are billions to be made, and it's not too late to profit from this technology! Because all of my book signings have been cancelled due to COVID-19, I am selling Blockchain or Die e-book for 99 cents until March 31, 2019! Buy Blockchain or Die for you and a friend or family member.https://www.amazon.com/Blockchain-Die...