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One API
to Rule Them All

BlockCypher APIs lets you interact with up to 8 blockchains in a unified way. No need to reinvent the wheel.

Start for free Pricing
Enabling the future of finance

Supported Chains

We are always working on adding new chains. Stay tuned!

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Bitcoin

Mainnet and Testnet3

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Ethereum

Mainnet and our internal Testnet

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Litecoin

Mainnet

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Dash

Mainnet

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Doge

Mainnet

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BCY

BlockCypher Internal Testnet

Discover BlockCypher APIs

One API Multiple Features

Retrieve data from a block, interact with a smart contract, get notified about an unconfirmed transaction or create a multisignature transaction.

All in one place.

Data

Addresses

Transactions

Blocks

Smart contracts

Interactions

Create transactions

Decode transactions

Interact with contracts

Deploy contracts

Notifications

Transactions webhook

Blocks webhook

Double spend webhook

Websocket

Advanced Features

Multisig

Segwit Support

Confidence factor

Assets (OAP)

Webhooks

Get notified on any blockchain event

{
  "event": "unconfirmed-tx",
  "url": "https://mysite.com/callbacks"
  "address": "15qx9ug952GWGTNn7Uiv6vode4RcGrRemh",
  "token": "0aad35a575ebf058e61116a65"
}

Multisig

Request multiple signatures

{
  "inputs": [{"addresses": [sourceAddr]}],
  "outputs": [{
  "addresses" : [pubkey1, pubkey2, pubkey3],
  "script_type" : "multisig-2-of-3",
  "value" : 250000,
}

Accept Payments

Get unique payment addresses that forward automatically

$ curl https://api.blockcypher.com/v1/btc/main/payments
{
  "input_address": "16uKw7GsQSzfMaVTcT7...",
  "destination" : "15qx9ug952GWGTNn7Uiv...",
  "callback_url": "https://mydomain.com/cb/payments"
  "token" : "37048cd01f250eca918ab55b658de3ec"
}

Query Addresses

Quickly get data on a specific address

$ curl https://api.blockcypher.com/v1/btc/main/addrs/1PuwQ6uWXNeGcEnLCAXmRJozdLZ9M4NWQ7
{   "address": "1PuwQ6uWXNeGcEnLCAXmRJozdLZ9M4NWQ7",
  "balance": 0,
  "unconfirmed_balance": 0,
  "txrefs": [...]
}

Browse the Blockchain

Retrieve blocks and transactions

# Using https://github.com/trentm/json
 $ curl -s https://api.blockcypher.com/v1/btc/main \
| json latest_url \
| xargs curl -s \
| json prev_block_url \
| xargs curl -s
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Scalable

Ship Faster Save Money.

Building an API and maintaining a cluster of nodes is not only costly but also time consuming.
Save months on development and thousands of dollars on engineering costs by using our unmatched pricing plans and features.

Efficient

Faster

Scalable

Cost-effective

BlockCypher APIs

Start Building Now

Create an account and start using BlockCypher APIs -no contracts or banking details required.

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