A blockchain explorer is a web tool that lets anyone look up what is happening on a blockchain in real time. You can search by transaction ID, wallet address, block number, or smart contract and see the details right on the page. Think of it like a search engine for on-chain data.
Typical explorers surface the key stuff people check most often: transaction status and confirmations, the fees paid, balances and history for public addresses, recent blocks with their height and timestamp, and smart contract interactions on chains that support them.
Explorers take raw blockchain data from nodes and present it in a clear, human-readable interface. They pull records of blocks and transactions and organize them so you can navigate them with a search bar instead of parsing node logs.
Each blockchain has its own explorer or set of explorers. A Bitcoin explorer focuses on Bitcoin data like chain length and fee charts, while an Ethereum explorer also highlights smart contracts and token transfers. Interfaces look similar, but the fields reflect what that chain supports.
Well-known explorers include Etherscan for Ethereum and Blockchain.com’s explorer for Bitcoin. BscScan, Polygonscan, and Solscan serve BNB Chain, Polygon, and Solana. Regardless of the brand, the core search and view functions are comparable across sites.
People open an explorer to confirm a payment went through, check how many confirmations it has, review a wallet’s public activity, or inspect a contract call. Analysts also watch network trends like gas fees or activity spikes to contextualize market moves.
A transaction page usually lists the TXID, sender and receiver addresses, the amount moved, fees, and current status. A block page shows height, timestamp, the list of transactions inside, and metadata such as miner or validator details and block reward when applicable. Some explorers add network stats like mempool size, average fees, or hash rate.
Most explorers are free to use and open to the public. Wallet addresses are visible, but they are not tied to personal identity unless the owner shares that link elsewhere. This means you can audit activity on chain while identities usually remain pseudonymous.