Blockchair API

Fetch data from 14 blockchains

Blockchair API provides developers, researchers, and businesses with access to data contained in 14 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:

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

High Uptime

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

Rest API

An industry standard. Make the usual HTTP requests.

JSON response data format

Convenient to use in applications written in various programming languages.

Real-time data

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

SQL-like queries

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

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

Sean Prescott

Founder & Executive Chairman

UniCrypt

UniCrypt provides a highly secure and regulated universal crypto vault and management platform for retail and institutional clients alike.

It’s paramount to be able to deliver fast and reliable blockchain data for account balances, transactions, analytics and forensics to our clients - no matter how complex and detail-rich.

Blockchair elegantly helps by providing us with a multitude of connectivity and query options that let us tailor and aggregate meaningful data in a way that lets us provide the best product in class for traders, custodians, exchanges and private investors at blazing fast speeds and reliability

Alexander Schevchenko

Chief Product Officer

Savl

Savl is the first community-based ecosystem for Digital Assets exchange. Transaction history upload speed had to be quick so our system could match users needs. We use Blockchair services to monitor and display clients' balances, promptly get transaction history and count unspent outputs for Bitcoin-like cryptocurrencies.