What is Blockchain?

Distributed ledger technology
All network participants have access to the distributed ledger and its immutable record of transactions

Immutable records
No participant can change or tamper with a transaction after it’s been recorded to the shared ledger.

Smart contracts
To speed transactions, a set of rules — called a smart contract — is stored on the blockchain and executed automatically

Distributed ledger technology
All network participants have access to the distributed ledger.