Bitcoin is a consensual network that enables a new payment system and a fully digital currency. It is the first peer decentralized network driven by its users pay no central authority or intermediaries. From a user standpoint, as Bitcoin is Internet money. Bitcoin may be the only existing triple accounting system.
Since the 1970s, the use of digital signatures based on public key cryptography has provided strong property inspection. Based on public key cryptography, in 1998 Dai Wei described b-Money, a decentralized solution to the problem of electronic payments. Later, Nick Szabo and Hal Finney extend and complement the work of Dai Wei.
In 2008, Satoshi Nakamoto published an article in the list of cryptography metzdowd.com describing the Bitcoin protocol.
On January 3, 2009 the Bitcoin P2P network is operational with the publication of the first client, open source, and the creation of the first bitcoines. Until the invention of bitcoin was required that all payments in e-commerce is channeled through trusted centralized institutions, usually banks and other financial companies, which managed the tracking of all transactions.
Well, Bitcoin was presented through a "paper", as he says to the technical presentation of a project, one (or several) person (s) named Satoshi Nakamoto.
In the "paper" the characteristics of distributed network system are explained, chain blocks, etc. everything related to Bitcoin.
Recall that one of its features is that only exist bitcoin 21 million units, but each can be divided to the eighth decimal (0.00000001). She is already minimal bitcoin to Satoshi called in honor of who created the whole system.
ThTherefore, when we talk about pay 100 satoshis you see an online advertising means you pay 0.00000100 bitcoin.