Glossary

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Glossary: Block

A block is a bundle of blockchain data, usually containing transactions, that gets added to a blockchain in order and linked to the blocks before it.

What is a Block?

A block is a bundle of blockchain data, usually containing transactions, that gets added to a blockchain in order and linked to the blocks before it.

Block Explained

A block is like one page in a shared digital notebook.

When people make blockchain transactions, those transactions are collected together into a block.

After the network checks that the information is valid, the block is added to the blockchain.

Each new block connects to the previous block, which helps create a secure history of what happened on the network.

What a Block Means For

Audience	Use Case
Crypto users	Understand how transactions are grouped, confirmed, and added to a blockchain.
Developers and infrastructure teams	Build apps, explorers, and tools that read block data from blockchain networks.
Analysts and researchers	Study network activity, transaction volume, fees, and timing by looking at block-level data.

Examples

A Bitcoin block may contain many transactions that were verified and added to the Bitcoin blockchain.
An Ethereum block includes transactions, smart contract activity, gas data, and other network information.
A block explorer lets users search for a specific block to see which transactions were included in it.
A crypto analyst studies blocks over time to understand network usage, congestion, and transaction fees.

FAQs

What is a block in blockchain?

A block is a bundle of verified data, usually transactions, added to a blockchain.

What does a block contain?

A block usually contains transactions, timestamps, references to previous blocks, and network-specific data.

How is a block added to a blockchain?

A block is added after the network verifies that its data follows the blockchain’s rules.

Is a block the same as a transaction?

No. A block usually contains many transactions, while a transaction is one specific action.

Why are blocks linked together?

Blocks are linked to create a secure, ordered history that is difficult to change.

Related Terms

A/B Testing

An experiment that compares two versions of a page, feature, or campaign to see which performs better.

Account Abstraction

Account abstraction is an approach that turns blockchain accounts into programmable smart contract wallets, enabling features like gasless transactions, social recovery, session keys, and paying fees in any token.

Activation Rate

Activation rate is the percentage of new users or wallets that complete a key activation milestone, such as a first transaction, out of all users who signed up or connected within a given period.