Overview
Explorers are web tools for reading blockchain data. They let you look up accounts, transactions, blocks, and smart contracts, making it easy to verify activity and debug issues.
Explorer
A blockchain explorer is a website that indexes on-chain data and presents it in a searchable user interface (UI). In TON, explorers commonly show account balances, recent transactions, jettons and non-fungible tokens (NFTs), contract code and state, and links to related blocks and messages.
What explorers show
- Balances and assets: TON, jettons, and NFTs held by an address
- Transactions and messages: history, fees, phases, and traces
- Blocks and validators: block contents, masterchain and shardchain details
- Smart contracts: code, state, disassembly, and known contract type
- Analytics: top entities, volumes, gas, fees, and network health
Indexers
Indexers continuously read blocks from nodes, parse messages and transactions, and store them in a database optimized for queries. Explorers rely on these indexers to provide fast search, traces, higher-level events, and historical views beyond what a single node exposes by default.
Explorers comparison
| Explorer | Type | Mainnet | Testnet | Official |
|---|---|---|---|---|
| Tonviewer | General-purpose | tonviewer.com | Testnet | No |
| Tonscan.org | General-purpose | tonscan.org | Testnet | No |
| Tonscan.com | General-purpose | tonscan.com | - | No |
| TON Explorer | Low-level/core | explorer.toncoin.org | Testnet | Yes |
Official: maintained by the TON Foundation or an affiliated team
The verifier tool powers contract code verification.