The Bitfinex Go SDK by Bitfinex allows to access the API to integrate financial features associated with bitcoin and crypto-currencies. Official implementation, REST API, and WebSockets API available. It includes installation and usage.
Bitcoin has released many BitCoin price data APIs since its launch in 2013. Now, the company has announced a closed beta of a new, full-featured API that improves existing APIs and offers new features and functionality. After a beta trial with existing users, the company expects a broader release.
Of all the markets being impacted by the booming API economy, perhaps none has seen as much activity and innovation as the payments space. The past several years have seen the launch of a number of disruptive and successful API-centric upstarts, including Stripe and Balanced. Meanwhile, entrenched players like PayPal and Verifone have responded with new offerings of their own.