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.
Why It Matters
A block explorer is a tool that allows users to view the content of blockchain transactions, providing transparency and traceability. It's essential for users to verify transactions and track their activity on the blockchain.
Example
For example, if you want to see the status of your Bitcoin transaction, you can enter the transaction ID into a block explorer. This will show whether your transaction has been confirmed and how many confirmations it has received.
Beginner Context
For those new to cryptocurrency, using a block explorer can be a helpful way to gain confidence in your transactions. By visually tracking your transfers, you better understand how blockchain technology operates.
Mike Starr
Founder, CryptoWizardTools · M.S. Organizational Management
Last reviewed: August 2026
Related Terms
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When a trader (or bot) sees a pending large transaction and submits their own order first to profit from the price impact. In DeFi, MEV bots front-run user transactions on public mempools, extracting value from everyday traders.
Smart Contract Audit
A security review of a smart contract by an independent firm that checks for bugs, vulnerabilities, and exploitable logic. Audits reduce but do not eliminate risk — they are a signal of due diligence, not a guarantee of safety.
Escrow
A third-party service or smart contract that holds funds until certain conditions are met, then releases them to the appropriate party. In crypto, smart-contract escrow removes the need to trust a human intermediary.
Spot Trading
Buying or selling an actual asset for immediate delivery, as opposed to trading derivatives like futures or options. Spot traders own the underlying crypto; derivatives traders only hold a contract based on its price.
ZK-SNARK
Zero-Knowledge Succinct Non-Interactive Argument of Knowledge — a cryptographic proof that lets one party prove they know a piece of information without revealing the information itself. ZK-SNARKs power privacy and scaling solutions like zk-rollups.