Block Explorer
Web tool to inspect blocks, transactions, and addresses.
A block explorer is a website or application that indexes blockchain data and makes it searchable. Users can inspect blocks, transactions, addresses, token transfers, fees, smart contract code, and network statistics. It provides a readable view of public chain activity, but it does not control or reverse what happened on the network.
Searching a transaction hash shows whether the transaction is pending, included, failed, or confirmed, along with its sender, recipient, value, gas use, and logs. Searching an address can show native currency, tokens, NFTs, and past activity. Contract pages may display verified source code and decoded functions that let advanced users read state or submit calls through a wallet.
Explorers matter when an application gives an unclear result. If a wallet says a transfer is pending, the explorer can show its current fee and nonce. If a decentralized exchange reports a failed swap, the transaction receipt may reveal a revert reason. Support teams use transaction hashes to investigate without requesting private keys or seed phrases.
Interpretation requires care. A successful transaction means execution did not revert, not necessarily that the user achieved the intended economic result. Token approvals may grant spending permission without moving tokens. Internal calls and event logs can show activity not obvious in the top-level transfer. Some token balances are spam, and a zero-value transfer can support address-poisoning scams.
Source-code verification only proves that submitted source compiles to the deployed bytecode under specified settings. It is not an audit, endorsement, or guarantee that proxy implementation and admin controls are safe. Labels such as exchange names and phishing warnings are maintained by the explorer and can be wrong or missing. Prices are off-chain estimates rather than consensus data.
Always select the correct chain because identical-looking addresses can exist on different networks. Confirm important contract addresses from official documentation and compare unusual results with another explorer or your own node. Never paste a seed phrase into an explorer or sign an unexpected transaction from its contract interface. A block explorer is a powerful observation and debugging tool, but its interface and annotations remain a third-party layer over the underlying blockchain.
Frequently asked questions
- Open the contract address on an explorer for the correct network and check whether published source code matches the deployed bytecode. Review the compiler settings, proxy implementation, creator, recent transactions, and privileged roles. A verified badge means the source was matched, not that the code is audited or safe. Confirm the address through official project sources.
- The transaction may offer an uncompetitive fee, wait behind an earlier transaction from the same account, or be absent from a block builder's mempool. Check its nonce, fee settings, network status, and whether another transaction replaced it. A wallet may support speeding up or canceling with the same nonce, but neither action is guaranteed before inclusion.
- Blocks, transactions, logs, and contract bytecode come from the explorer's node and should match other healthy nodes after finality. Token names, address labels, prices, decoded methods, and scam tags are added or interpreted by the service and may be incomplete. Cross-check important facts with another explorer, a node, and authoritative contract documentation.