Satoshi Nakamoto, January 17, 2009
Bitcoin is traded in a one-to-one network, with all transactions recorded in a public record called a block chain. If you send 1 bitcoin from your bitcoin address (or wallet) to your friend Ahmed, the bitcoin network records the transaction in the public record, which means you don't have bitcoin possession. The currency has moved from your Bitcoin wallet to Ahmed's wallet.
In November 2008, an article entitled "Bitcoin: One-for-One Electronic Cash System" was published to an encrypted mailing list called Satoshi Nakamoto. This article discusses ways to use a one-for-one network for a system of electronic transactions without relying on trust. In January 2009, the Bitcoin network came into being with the release of the first open source Bitcoin client and the release of the first Bitcoin, and Satoshi Nakamoto, the first to extract Bitcoin at all.
The value of the first bitcoin transaction was discussed by some people in the 'Bitcointalk' forums and the observed transaction was that 10,000 Bitcoins were used to buy two pizzas indirectly.
The only security barrier found and exploited throughout the history of Bitcoin, on August 6, 2010; more than 184 billion bitmoins were created in a security breach deal. Within hours, the transaction was monitored and erased.