Blockscout
Source-available block explorer for EVM chains, self-hosted or hosted, with a multichain PRO API.
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Blockscout key facts
| Category | Block explorer |
|---|---|
| Chains | EVM chains |
| Platforms | Web, API |
| Pricing | Builder $49/mo, Pro $199/mo, Business $999/mo, Enterprise custom |
| Free plan | 5 RPS, 100K credits/day |
| Open source | Source-available (Blockscout Software Licence since v11.0.0) |
| Chains | EVM chains; PRO API covers 100+ chains |
| US availability | Available: terms restrict only sanctioned jurisdictions |
What is Blockscout?
Blockscout is a block explorer for EVM chains that projects can self-host or buy as a hosted service; its docs cite support for 1000+ networks. The PRO API covers 100+ chains with one key, free at 5 requests per second and 100K credits a day, with paid plans from $49 a month.
How Blockscout works
Blockscout reads a chain through its JSON-RPC node using two primary indexers.
The realtime indexer imports new blocks at the head of the chain, and the catchup indexer works backward toward genesis. Secondary fetchers then fill in internal transactions, token balances, contract bytecode, NFT instances and block rewards. On-demand fetchers refresh balances and metadata when a page asks for them. Token prices and market data come from outside sources such as CoinGecko, CoinMarketCap, Cryptorank and DefiLlama. Contracts can be verified from the UI or through Sourcify, Hardhat, Foundry, Remix or thirdweb. The docs also describe verifying Arbitrum Stylus contracts.
How to start with Blockscout
- There are two ways for a chain team to launch an explorer.
- You can self-host with Docker, Kubernetes or a manual install, following the published hardware, database and node-tracing requirements.
- Or you can use Autoscout at deploy.blockscout.com: create an account, buy credits at $1 each by card or crypto, enter your RPC and chain details, and deploy.
- Blockscout says the explorer is live and indexing within 5 to 10 minutes.
- API users get a free PRO key at dev.blockscout.com.
Blockscout fees and limits
- Small, Medium and Large include 512 GB, 1 TB and 2 TB of disk, and storage beyond that costs $0.00015 per GB-hour.
Autoscout bills credits by the hour. A Small instance (under 50K transactions a day) costs about 349 credits a month, Medium (under 150K) about 699, and Large (under 1M) about 949. On the PRO API, most calls cost 20 credits. Heavier endpoints cost more, from 30 credits for logs up to 50 for raw traces and transaction summaries.
Risks to know before using Blockscout
- If an Autoscout account runs out of credits, the instance stops, and after you top up it has to be relaunched and reindexed from scratch.
- Since v11.0.0 (April 22, 2026), anyone reselling Blockscout as a paid hosted service needs a Commercial Licence.
- Every Blockscout interface must also show a "Powered by Blockscout" credit.
- Versions up to v10.2.0 remain under GPL v3.0.
Blockscout alternatives
Other projects people compare with Blockscout.
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Ethereum explorer focused on ERC-20 tokens, address portfolios and historical USD balances.
Where Blockscout ranks on DappAtlas
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Blockscout pros and cons
- Free PRO API: 5 RPS and 100K credits/day
- One API key across 100+ chains
- Free to self-host and modify for your own chain
- Since v11.0.0 (April 2026) the license is source-available, not open source
- Reselling hosted Blockscout needs a commercial license
- Default call costs 20 credits, so the free tier is about 5,000 calls/day
Blockscout FAQ
What is Blockscout?
Blockscout is a block explorer for EVM chains that projects can self-host or buy as a hosted service; its docs cite support for 1000+ networks. The PRO API covers 100+ chains with one key, free at 5 requests per second and 100K credits a day, with paid plans from $49 a month.
Which chains does Blockscout support?
EVM chains.
How much does Blockscout cost?
Builder $49/mo, Pro $199/mo, Business $999/mo, Enterprise custom, according to Blockscout’s own page (checked Sep 26, 2026). Free plan: 5 RPS, 100K credits/day.
Is Blockscout available in the US?
Available: terms restrict only sanctioned jurisdictions, according to Blockscout’s own page (checked Oct 1, 2026).
Sources
How this page works
Sources: Blockscout: official site, Blockscout: API rate limits, Blockscout: Software licence. Data as of Oct 1, 2026.
Not affiliated with any project listed. Educational content, not financial advice.