A shared immutable ledger for recording transactions, tracking assets and building trust
It is a really long series of blocks with each block containing information
Each block also contains the hash for the previous block

Public Ledger

A record-keeping system that maintains participants identities in a secure and anonymous format

Smart Contracts

Self-executing contracts where the terms of agreement or conditions are written directly into lines of code
Can automatically perform actions when certain conditions are met
Once a smart contract is deployed, it cannot be altered, making the agreement tamper-proof and trustworthy