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 teamThe verifier tool powers contract code verification.