Blockchair API
One unified API across ~40 mainnet blockchains (Bitcoin, Ethereum, Litecoin, Dogecoin and more) with keyless stats and dashboards.
Blockchair offers a single, consistent REST API spanning many chains (Bitcoin-like, Ethereum-like, and others), so one integration covers Bitcoin, Ethereum, Litecoin, Bitcoin Cash, Dogecoin, Dash, and more. It splits into stats endpoints (overall network metrics), dashboards (neatly formatted entity views: address, transaction, block), and raw-data endpoints (direct node output). The keyless free plan is genuinely usable for light work: network stats and lookups return immediately. It also has search and aggregation features that are uncommon in single-chain explorers. Verified live June 2026.
Free tier
Free keyless plan (1,000 calls/day, hard cap 30 requests/min). Paid API keys raise limits; see the plans page for pricing.Rate limits
Keyless free: ~1,000 requests/day and a hard cap of 30 requests/minute. Exceeding it returns code 430 (IP temporarily blacklisted). Some batch/dashboard queries count as more than one request.Auth
No keyBase URL
https://api.blockchair.comWhat you'd build with it
- Query many chains (BTC/ETH/LTC/DOGE...) through one API surface
- Pull network-wide stats (difficulty, mempool, circulation) for a dashboard
- Look up an address or transaction on whichever chain a user names
- Cross-chain comparison reports in a single automation
Key endpoints
- GET
/{chain}/statsOverall network stats (e.g. /bitcoin/stats): blocks, mempool, difficulty, price - GET
/{chain}/dashboards/address/{address}Formatted address view: balance, tx list, UTXOs - GET
/{chain}/dashboards/transaction/{hash}Formatted transaction view with inputs/outputs - GET
/{chain}/dashboards/block/{id}Formatted block view by height or hash - GET
/{chain}/raw/transaction/{hash}Raw node output for a transaction - GET
/statsCross-chain summary of all supported blockchains
Members get the runnable recipe
Sign in free to copy the example request, see a sample response, and read the gotchas.