Bitcoin API

The most famous cryptocurrency and blockchain in the world, Bitcoin is open-sourced, with no master, and anyone can take part in its development and management. Its success inspired the creation of the wealth of cryptocurrencies.

Networks Mainnet, Testnet
Released 2009
Consensus Proof of Work (PoW)
Smart contracts No
Block time 10 minutes
Smart contract language(s) supported No
Try Bitcoin APIs for free

Bitcoin
Ethereum
XRP Ledger
Ethereum Classic
Bitcoin Cash
Dash
Litecoin
Dogecoin
Zcash
View all supported

The Bitcoin API — build without running a node

Access Bitcoin blockchain data through one unified REST API: transaction and address data, balances, block data, and real-time webhooks for on-chain events — with no Bitcoin node to run and maintain. Start free and scale as you grow.

Blockchain data

Read Bitcoin transactions, addresses, balances, UTXOs, and block data through one REST API.

Real-time webhooks

Subscribe to on-chain events — incoming and outgoing transactions, confirmations, and mined blocks.

No node to run

Skip the infrastructure — managed, always-synced access with no node to operate or maintain.

View the API docs Start building free

Building a full wallet? Explore HD Wallets.

Need prices too? See the crypto price API, or run your own Bitcoin RPC nodes.

The backbone of blockchain

Bitcoin paved the way for the evolution of blockchain technology. It represents a new and innovative way for monetary transfers and transactions to occur under the digital governance of a decentralized network providing anonymity, privacy and security.

Frequently Asked Questions

Which blockchain does Bitcoin run on?

Bitcoin settles on Bitcoin. Because there is no account balance to read, spending means selecting unspent outputs and handling change. Crypto APIs does that selection for you in prepare-transactions, so you sign one prepared transaction rather than assembling inputs yourself.

What kind of chain is Bitcoin?

It is a UTXO chain — balances are the sum of unspent outputs, not a single account figure.

Can I test Bitcoin without spending real funds?

Yes — the same endpoints serve Bitcoin's testnet testnet, so you can build and verify an integration end to end before you touch mainnet.

How do I read Bitcoin balances and transfers?

Use Address Latest for current state and recent activity — it needs no setup and answers for roughly the last 14 days. For a full history, Address History requires the address to be synced first, which then bills per address per day for as long as it stays synced.

What does reading Bitcoin data cost?

It depends on the endpoint family rather than on Bitcoin itself: single-record calls are charged per request, while list endpoints are charged per page returned, and a synced address adds a daily monitoring charge. The pricing calculator has the current per-chain figures.