Glossary: Blockchain

Glossary: Blockchain

A blockchain is a chain of blocks containing transaction data, linked together using cryptographic hashes to create an unchangeable record.

Glossary: Difficulty

Glossary: Difficulty

Mining difficulty measures how hard it is to find a valid block hash, adjusting to keep block times consistent across the network.

Glossary: Block Reward

Glossary: Block Reward

The block reward is the amount of new cryptocurrency a miner receives for successfully mining a block on the blockchain.

Glossary: Block Header

Glossary: Block Header

A compact summary at the top of each block containing metadata that miners hash to find valid proof-of-work solutions.

Glossary: Target

Glossary: Target

The mining target is a numerical threshold that a block’s hash must be below to be valid—it determines how difficult mining is at any given time.

Glossary: Orphan Block

Glossary: Orphan Block

An orphan block is a valid block that gets rejected because another block at the same height was accepted first by the network.

Glossary: Fork

Glossary: Fork

A blockchain fork occurs when a cryptocurrency’s protocol splits into two separate chains, either temporarily or permanently.