Bitcoin until today
Core Technology Discoveries
Bitcoin was developed over the decade preceding its release and melds numerous technologies that were well established in the computing and cryptography industries.
- Merkle Trees which Bitcoin uses as a means to immutably condense the record of a block of unbounded size into just 32 bytes were patented by Ralph Merkle in 1979.
- The use of elliptic curves in cryptography was suggested independently by both Neal Koblitz and Victor S. Miller in 1985. The Elliptic Curve Digital Signature Algorithm which builds on this technology to enable signing of messages using ECC keypairs and is used heavily in Bitcoin.
- Forth is a programming language created by Charles H. Moore in the late 1960's. The scripting language used to build Bitcoin transactions is based heavily on Forth.
Digital Cash systems pre-bitcoin
eCash
A cryptographic system for untraceable payments was first described by David Chaum in 1982 in the paper "Blind signatures for untraceable payments, Advances in Cryptology - Crypto '82, Springer-Verlag (1983), 199–203. In 1990 Chaum extended this system to create the first cryptographic anonymous electronic cash system which became known as Ecash.
b-money and Bit Gold
In 1998 Wei Dai published a description of an anonymous, distributed electronic cash system which he called "b-money". Around the same time, Nick Szabo created bit gold. Like Bitcoin, Bit gold was a currency system where users would compete to solve a proof of work function, with solutions being cryptographically chained together and published via a distributed property title registry. A variant of Bit gold, called Reusable Proofs of Work, was implemented by Hal Finney.
Liberty Reserve
Release of the Bitcoin whitepaper
Establishment of the Bitcoin Network
In 2011, Wikileaks,<ref>Template:Cite news</ref> Freenet,<ref>Template:Cite web</ref> Singularity Institute,<ref>SIAI donation page</ref> Internet Archive,<ref>Internet Archive donation page</ref> Free Software Foundation<ref>Other ways to donate</ref> and others, began to accept donations in Bitcoin. The Electronic Frontier Foundation did so for a while but has since stopped, citing concerns about a lack of legal precedent about new currency systems, and because they "generally don't endorse any type of product or service."<ref>Template:Cite web</ref> Some small businesses had started to adopt Bitcoin. LaCie, a public company, accepts Bitcoin for its Wuala service.<ref>Template:Cite web</ref>
In 2012, BitPay reports of having over 1000 merchants accepting Bitcoin under its payment processing service.<ref>Template:Cite web</ref>
https://wiki.bitcoinsv.io/index.php/History_of_Bitcoin