Glossary
Definition
Blockchain
A distributed, immutable ledger of transactions.
A blockchain is a distributed database of transactions organised into blocks that are linked and secured using cryptography. Once recorded, data in a block cannot be altered without altering all subsequent blocks. Blockchain is the underlying technology of Bitcoin and other cryptocurrencies.
Frequently Asked Questions
Is blockchain only used for cryptocurrency?
No. Blockchain technology has applications in supply chain tracking, healthcare records, digital identity, smart contracts, and financial settlement. Many large companies including IBM, Walmart, and JPMorgan have explored blockchain for business applications.