Blockchain

A public ledger that records transactions in blocks.

Explanation

Blockchains are append-only: once confirmed, reversing is hard/impossible without special conditions.

Related pages

Gift cardsPayment methodsToolsWhere to buy

Related terms

BlockConfirmationsTXID (transaction ID)

FAQ

What does “Blockchain” mean?
A public ledger that records transactions in blocks.
Where is this term used on the site?
This glossary page is the canonical definition. Use the related links below to jump into guides and hub pages where the concept is applied.
Is this financial advice?
No. These pages provide definitions and safety-oriented explanations, not investment advice.