Ethereum is implemented in 3 languages, Go, C++, Python and is fully Open-sourced. We are going to be reverse engineering understandably the Go implementation in this course. The contributors count as of day 15.09.2018 is 330.
Ethereum was initially described by Vitalik Buterin in late 2013 as a result of his research and work in the Bitcoin community. Shortly thereafter, Vitalik published the Ethereum white paper, where he describes in detail the technical design and rationale for the Ethereum protocol and smart contracts architecture.
The legal and financial complexities of raising funds through a presale led to the creation of several legal entities, including the Ethereum Foundation (Stiftung Ethereum) established June 2014 in Zug, Switzerland.
Beginning in July 2014, Ethereum distributed the initial allocation of ether via a 42-day public ether presale, netting 31,591 bitcoins, worth $18,439,086 at that time, in exchange for about 60,102,216 ether.