The BlockCypher API provides public explorer data focused on blocks, addresses, and transactions for the Bitcoin network. It supports optional API key authentication, offers a free tier, and includes endpoints for chain summaries and address queries.
The information on this page was compiled from the provider's own sources, but the record has not been through full editorial review. Verify access conditions and limits against the provider's current documentation. Records in this state are not indexed by search engines.
Our review criteriaCatalog notes to consider when evaluating the integration, in addition to the provider documentation.
Read-only GET calls on BlockCypher need no token. Without one, classic requests are limited to 3 per second and 100 per hour, with confidence lookups tighter still at 10 per hour. WebHooks and WebSockets are capped at 100 notifications sent to your servers per hour and 100 stored hooks. Hourly limits reset on the top of the hour UTC. A token becomes mandatory for confidence lookups, WebHooks and WebSockets, payments, and any POST or DELETE call. A hundred requests an hour is a low ceiling: for address watching, register a webhook rather than polling in a loop. Verified 2026-08-25.
Last verified: August 25, 2026
Public test lab configuration summary for this API.
https://api.blockcypher.com/Methods
Verified endpoint examples
/v1/btc/mainChain overview
Returns a summary of Bitcoin mainnet state.
/v1/btc/main/addrs/1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNaGenesis address
Returns balance and transaction summary for a sample Bitcoin address.
Tracked public interactions for this catalog entry.
views
48
doc clicks
1
API calls
4
API ownership claim
If you are the official provider of this API, you can submit an ownership claim.