Blockchair API
Fetch data from 17 blockchains

Blockchair API provides developers, researchers, and businesses with access to data contained in 17 blockchains. The API supports numerous analytical queries like filtering, sorting, and aggregating blockchain data with high uptime.

It doesn’t get any better than this:
  • Fetch the balance for up to 25,000 addresses under 1 sec
  • One endpoint for all blockchain data your product needs
  • Batch requests for transactions and addresses
  • Get the most important stats on all supported blockchains via one API request
  • SQL-like queries for in-depth research analysis
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What our users say about our features

Privacy guaranteed

API documentation done right

Packages for all use cases

Inexhaustible data insights for 17 blockchains

ERC-20, Omni Layer, Segwit, xpubs, and more

Blockchain data exactly as it is recorded on blockchains

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Blockchair API is ideal for

Exchanges
Multicurrency wallets
Analytical services
Blockchain startups
Independent researchers
Students and academia
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API characteristics

1
High Uptime

We run multiple infrastructures to guarantee the highest uptime on the market.

2
Rest API

An industry standard. Make the usual HTTP requests.

3
JSON response data format

Convenient to use in applications written in various programming languages.

4
Real-time data

For most blockchains we are running our own full nodes which guarantee you access to up-to-date data, always.

5
SQL-like queries

Filter, sort, offset, aggregate. Construct queries very similar to the SQL ones.

6
Free API testing plan

The plan allows you to test the API without the key with the daily limit of 1,000 calls.

Best prices

According to our clients we offer the best value for money. Both one-time and monthly payments are available!

No hard API limits

On our Enterprise plans you won’t be blocked from making requests if you hit the API limit.

One-on-one support

Have problems constructing a query or can’t find how to pull certain data? Our support team is ready to help you with all your questions.

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Client testimonials

Blockchains we support

Bitcoin
Ethereum
Ripple*
Litecoin
Bitcoin Cash
Cardano
Stellar*
Bitcoin SV
EOS*
Monero
Tezos
Dash
Zcash
Dogecoin
Bitcoin ABC
Mixin
Groestlcoin

We also provide data for over 120.000 ERC-20 tokens and the Omni Layer

* For these blockchains we don't support the full history

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Trusted by the best

GitHub
Crypto.com
Bitcoin Suisse
Bitmain

Used by leading educational institutions

Oxford
Harvard
MIT
Berkeley
***

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