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Block Explorer

A web-based tool that allows anyone to search and browse all transactions, wallet addresses, and blocks on a blockchain. Tools like Etherscan and Mempool.space are popular block explorers.

Mike Starr

Founder, CryptoWizardTools · M.S. Organizational Management

Last reviewed: August 2026

Related Terms

Public Key

A cryptographic key that can be shared publicly and is used to receive cryptocurrency. It is derived from the private key.

Layer 1 Blockchain

The foundational layer of a blockchain ecosystem — the main chain that processes and records all transactions. Bitcoin and Ethereum are the most well-known Layer 1 blockchains. All Layer 2 solutions build on top of a Layer 1.

Pump and Dump

A market manipulation scheme where the price of an asset is artificially inflated through misleading statements, then sold off at the peak for profit.

Address

A unique string of letters and numbers that identifies a wallet on a blockchain, similar to a bank account number. You share your address to receive cryptocurrency. Each address is derived from your public key and is safe to share publicly.

HODL

A term originating from a misspelling of "hold," meaning to hold onto cryptocurrency long-term rather than selling. It has become a popular investment philosophy in the crypto community.

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