blockchain

noun

block·​chain ˈbläk-ˌchān 

: 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

As blockchain technology matures and healthcare systems seek innovative ways to reduce costs, increase transparency, and empower patients, DAOs are emerging as a compelling model for decentralized decision-making and collective action. —Chrissa McFarlane, Forbes.com, 1 May 2025

Some financial giants, including JP Morgan and Goldman Sachs, have launched blockchain networks and crypto trading desks in response to the growing popularity of digital currencies. —Natasha Turak, CNBC, 30 Apr. 2025

Kronenberg explained that a higher level of service is available for companies that require post-quantum encryption, want to use their own blockchain of choice, or need to host their own validation algorithms. —Neil J. Rubenking, PC Magazine, 29 Apr. 2025

Blockchain The blockchain is the publicly viewable ledger of all cryptocurrency transactions. —Eric Lipton, New York Times, 29 Apr. 2025

Word History

First Known Use

2011, in the meaning defined above

Rhymes for blockchain

• abstain
• airplane
• alkane
• arcane
• arraign
• attain
• backplane
• betaine
• biplane
• butane
• campaign
• cetane