Noun
A shared record of past transactions in a distributed network, typically used for cryptocurrency.
- Examples
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More examples (3)
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 […]
[…] 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 […]
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.