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See also: Blockchain and block chain



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”.[1]


blockchain (plural blockchains)

  1. A shared record of past transactions in a distributed network, typically used for cryptocurrency. [from 2010s]
    Hyponyms: mainchain, sidechain
    • 2014, Michael R. Miller, The Ultimate Guide to Bitcoin, Que Publishing, →ISBN, page 93:
      By the way, mobile wallets differ from most software wallets in that they don't download the entire Bitcoin blockchain with every transaction. (Many software wallets do, interestingly.) Because the blockchain is a file several gigabytes in size, this would eat up a ton of mobile bandwidth and probably cause your mobile provider to either enact overage charges or just plain cancel your account. In addition, your mobile phone probably doesn't have enough onboard storage to host the entire []
    • 2014, Pedro Franco, Understanding Bitcoin: Cryptography, Engineering and Economics, John Wiley & Sons, →ISBN, page 95:
      [] blockchain is arguably the most important innovation introduced by Bitcoin. It is the missing link that makes distributed peer-to-peer digital currencies possible. The blockchain is in essence a distributed database holding all the Bitcoin transactions since the beginning (January 3, 2009) and a method to secure this database. The blockchain keeps a secure list of all the transactions. However, there are relevant questions, such as whether a particular transaction output is spendable, that []



  1. ^ Satoshi Nakamoto (2008), “Bitcoin: A Peer-to-Peer Electronic Cash System”, in (please provide the title of the work)[1]: “The network timestamps transactions by hashing them into an ongoing chain of hash-based proof-of-work, forming a record that cannot be changed without redoing the proof-of-work.”

Further reading[edit]


French Wikipedia has an article on:
Wikipedia fr


Borrowed from English blockchain.



blockchain f (plural blockchains)

  1. (computing) Synonym of chaîne de blocs (blockchain)


Spanish Wikipedia has an article on:
Wikipedia es


Unadapted borrowing from English blockchain.


blockchain f (plural blockchains)

  1. (computing) Synonym of cadena de bloques (blockchain)