blockchain

Meaning

Noun

• A shared record of past transactions in a distributed network, typically used for cryptocurrency.

Origin

• block + chain, from earlier “block chain”. In the 2008 Bitcoin paper block and chain are used separately; the concept is referred to as “chain of hash-based proof-of-work” or “chain of digital signatures”.{{cite-web
• |title=Bitcoin: A Peer-to-Peer Electronic Cash System
• |year=2008
• |author=Satoshi Nakamoto
• |authorlink=Satoshi Nakamoto
• |url=https://bitcoin.org/bitcoin.pdf