# Block Explorer

> A website that lets you look up transactions, addresses, and blocks on a blockchain.

Canonical URL: https://fudfomo.co/glossary/block-explorer
Source: What The Block! Dictionary v1.0 (last updated 2026-04-25), browsable at https://wtb.fudfomo.co.

## Definition

A block explorer is a public search engine for a blockchain. You can paste in an address to see its full transaction history, look up a single transaction, or browse recent blocks.

Explorers make on-chain activity transparent and are commonly used by support teams, analysts, and ordinary users to confirm that a transfer went through. Each chain has its own explorers, and major chains usually have several to choose from.

## Related terms

- [Address](https://fudfomo.co/glossary/address): A short string of characters that identifies a wallet on a blockchain.
- [Transaction](https://fudfomo.co/glossary/transaction): An instruction recorded on a blockchain that moves value or runs a smart contract.
- [Block](https://fudfomo.co/glossary/block): A bundle of transactions added to a blockchain together.
- [Blockchain](https://fudfomo.co/glossary/blockchain): A shared digital record of transactions that no single person or company controls. Everyone can read it, and changes are extremely hard to fake.

## See the full catalogue

What The Block! covers more than 2,000 plain-English crypto terms, delivered as embeddable hover-state tooltips for crypto exchanges. https://wtb.fudfomo.co