What a blockchain explorer is
A blockchain explorer is a website that lets you search and read data from a blockchain. Think of it as Google for on-chain activity. Every wallet address, every transaction, every smart contract — it's all indexed and searchable.
The most popular explorers by chain:
- Ethereum: etherscan.io
- Solana: solscan.io, explorer.solana.com
- BNB Chain: bscscan.com
- Arbitrum: arbiscan.io
- Bitcoin: mempool.space, blockchain.com
How to verify a transaction
- After sending crypto, copy the transaction hash (TxHash) — a long hexadecimal string
- Paste it into the relevant blockchain explorer's search bar
- The explorer shows: sender, recipient, amount, fee, timestamp, and confirmation status
A transaction marked "Success" with multiple confirmations means it's finalized. If it says "Pending," it's still being processed. "Failed" means it was reverted — usually due to insufficient gas or a contract error. Failed transactions still cost gas.
Reading a wallet address page
Search any wallet address and you'll see:
- Balance: How much native currency (ETH, SOL, BNB) the wallet holds
- Token holdings: All ERC-20/SPL tokens in the wallet
- Transaction history: Every incoming and outgoing transaction, chronologically
- Internal transactions: Interactions with smart contracts (swaps, approvals, etc.)
- Token approvals: Which contracts have permission to spend your tokens
Verifying a smart contract
Before interacting with a DeFi protocol, you can check its contract on Etherscan:
- Is the source code verified? (Verified contracts show their code publicly — unverified ones are a red flag)
- How many transactions does it have? (A new contract with few interactions is riskier)
- Is it a proxy contract? (Proxies can be upgraded by the owner — which means logic can change)
Practical uses
- Confirming a deposit arrived at an exchange before contacting support
- Checking if a token is real by looking at the contract creator and transaction count
- Monitoring whale wallets to see large movements (a form of on-chain analysis)
- Revoking token approvals through tools like revoke.cash (which links to explorer data)
Before you need explorers
On Korvex, all your activity is visible in the dashboard — trades, fees, balances, order history. It mirrors the transparency of a blockchain explorer but in a beginner-friendly interface. Once you move to on-chain trading, you'll already know what to look for.