On October 31, 1517, Martin Luther…

On October 31, 1517, Martin Luther published his 95 theses by nailing them to the door of a church. October 31 has since been celebrated as the so-called "Reformation Day", the day on which the Reformation of the Christian Church began.

On October 31, 1924 - 100 years ago - the so-called "World Savings Day" was introduced.

On October 31, 2008, Satoshi Nakamoto published his "Bitcoin Whitepaper".

#Bitcoin.