blockchain

noun

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

   “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 […]”

   “Examples abound regarding how firms are using blockchains to enhance cybersecurity; after all, at its most basic level, it is an open source code that can be downloaded and run by anyone, for free. Due to these exceedingly low barriers to entry, this technology has the potential to unleash coinless cybersecurity applications. Already, Marc Andreesen, a venture capitalist, has invested more than $50 million in blockchain technologies.”