Longhorn by BullPay allows developers to add blockchain support to their applications. The API delivers enterprise class features including real-time and historical transactions, summaries, and auditing data. Longhorn is a REST interface with JSON responses and API Keys are used for authentication. The API uses a patent-pending memory-mapped database technology which provides 5 blockchains (Bitcoin, Litecoin, Ethereum, Dash, and Dogecoin). Litecoin TestNet is also supported. The API currently offers 12 endpoints for sending transactions, retrieving summaries, and more. A free package is available that allows for 5,000 calls a day.
Ten APIs have been added to the ProgrammableWeb directory in categories including Cryptocurrency, Hardware, and Networking. Highlights include APIs for retrieving digital content from the University of California, and an API which returns the elevation of an application user.
Longhorn by BullPay provides real-time wallet balances, all historical blockchain transactions, and more on 5 blockchains and 1 testnet, bridging the communication gap between blockchain node networks and blockchain-related applications with a unified API.