blockchain

noun

block·​chain ˈbläk-ˌchān How to pronounce blockchain (audio)
: a digital database containing information (such as records of financial transactions) that can be simultaneously used and shared within a large decentralized, publicly accessible network
also : the technology used to create such a database
The technology at the heart of bitcoin and other virtual currencies, blockchain is an open, distributed ledger that can record transactions between two parties efficiently and in a verifiable and permanent way. Marco Iansiti and Karim R. Lakhani

Examples of blockchain in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Your holdings live on the blockchain, but can only be accessed using a private key. Susan Tompor, USA Today, 22 Sep. 2025 Aman holds expertise in politics, travel, and tech news, especially in AI, advanced algorithms, and blockchain, with a strong curiosity about all things that fall under science and tech. Aman Tripathi, Interesting Engineering, 19 Sep. 2025 DeFi refers to peer-to-peer financial services on the blockchain. Kelly Phillips Erb, Forbes.com, 18 Sep. 2025 Figure’s business centers around putting mortgages on the blockchain, which the company says speeds up the granting and funding of home loans. Jason Del Rey, Fortune, 12 Sep. 2025 See All Example Sentences for blockchain

Word History

First Known Use

2011, in the meaning defined above

Time Traveler
The first known use of blockchain was in 2011

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Cite this Entry

“Blockchain.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/blockchain. Accessed 24 Sep. 2025.

Last Updated: - Updated example sentences
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