History of Bitcoin

Bitcoin is a cryptocurrency, a form of money that uses cryptography to control its creation and management, rather than relying on central authorities. However, not all of the technologies and concepts that make up bitcoin are new; the presumed pseudonymous Satoshi Nakamoto (the creator of bitcoin, see below) integrated many existing ideas from the cypherpunk community when creating bitcoin.

Pre-history

Prior to the release of bitcoin there were a number of digital cash technologies starting with the issuer based ecash protocols of David Chaum and Stefan Brands. Adam Back developed hashcash, a proof-of-work scheme for spam control. The first proposals for distributed digital scarcity based cryptocurrencies were Wei Dai's b-money and Nick Szabo's bit gold. Hal Finney developed RPOW. Bit gold, b-money and RPOW all used hashcash as their proof-of-work algorithm.

Independently and at around the same time, Wei Dai proposed b-money and Nick Szabo proposed bit gold. Subsequently, Hal Finney implemented and deployed RPOW a reusable form of hashcash based on IBM secure TPM hardware and remote attestation (centralized but with no issuer inflation risk).

Dai

Dai may refer to:

Names

Acronyms

Dai (surname)

Dai is the pinyin romanization of the Chinese surname written with the Chinese character 戴. It is romanized as Tai in Wade-Giles and in Hong Kong Government Cantonese Romanisation. Dai is the 96th most common surname in China, according to a report on the household registrations released by the Chinese Ministry of Public Security on April 24, 2007.

Notable people

Business

Academia and literature

Dai (Warring States period)

Dai (Chinese: 代; pinyin: Dài) was a short-lived state from 227 BC to 222 BC during the Warring States period. Prince Zhao Jia, older brother of King Youmiu of Zhao, fled with the remnant forces to the former location of Dai after the Conquest of Zhao and proclaimed himself "King of Dai". It was conquered in the year 222 BC by Qin.

References