The Coinbase PHP Sample Code by Coinbase presents initial API access to implement payments into applications. Resources include authentication, client integration test, configuration test, HTTP client test, and mapper test.
The W3C Web Payments Working Group has published working drafts of Web Payments HTTP Specifications that include the Web Payments HTTP API 1.0 and Web Payments HTTP Messages 1.0. The two specifications are designed to work together to enable payment requests outside of a browser context.
Overstock has announced the integration of its online marketplace with ShapeShift to offer customers use of all major cryptocurrencies. Thanks to the integration with ShapeShift, Overstock customers can now pay for purchases with Bitcoin Cash, Dash, Ethereum, Litecoin, Monero, and many other assets.