Blockchain

http://www.drdobbs.com/cpp/the-byzantine-generals-problem/206904396
https://medium.com/@DebrajG/how-the-byzantine-general-sacked-the-castle-a-look-into-blockchain-370fe637502c

https://www.youtube.com/watch?v=UVzCZqNngaU

https://www.ibm.com/linuxone/solutions/blockchain-technology

https://www.ethereum.org/


https://en.wikipedia.org/wiki/Two_Generals%27_Problem
http://www.michaelnielsen.org/ddi/how-the-bitcoin-protocol-actually-works/