Bitquery
Bitquery provides blockchain API for 40+ chains such as Bitcoin, Arbitrum, Ethereum & Solana, and protocols like Uniswap, PancakeSwap, etc.
Reference
This site aims to provide the docs you need to understand Bitcoin and start building Bitcoin-based applications ... Find technical details and API documentation.
RPC API Reference
This site aims to provide the docs you need to understand Bitcoin and start building Bitcoin-based applications.
BuySell Bitcoin, Ether and Altcoins
We offer access to Spot, Margin, Futures, and Options API trading for over 300 digital and fiat currencies. API trading provides a testing environment, API ...
Blockchain Developer APIs
Build bitcoin apps on top of our APIs for free. API Terms of Service · Blockchain Data API. Query JSON data for blocks and transactions. · Simple Query API.
Blockchain Data API
The most popular and trusted block explorer and crypto transaction search engine.
CoinAPI.io
Find, test, and connect to thousands exchanges from one centralized location. CoinAPI allows hooking up to multiple crypto exchanges through a single account.