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OPEN State provides an open-source solution for tracking wallets. For a developer to accept cryptocurrency, they need to implement many different things. First of all, there might be many different options such as Bitcoin, Ethereum, ERC20. For each currency, the developer needs to implement its integration. For the integration, there are also many options such as native integration or payment gateway integration.

Each native integration is usually very complicated and might be vulnerable.

OPEN State utilizes the reactive approach and has been developed with a beautiful architecture, good description and explanation.

Many backend services these days are REST-ful (i.e. they operate over HTTP) so the underlying protocol is fundamentally blocking and synchronous. Microservice calls or API calls often involve calling other services, and then even more services depending on the results from the first calls. With so much IO going on, if you were to wait for one call to complete before sending the next request, your poor client would give up in frustration before you managed to assemble a reply. So external service calls, especially complex orchestrations of dependencies between calls, are a good thing to optimize. In Open State, as we call external APIs over HTTP such as getting state of blocks in Ethereum, we utilize kotlin coroutines. Additionally our storage libraries provide reactive drivers.

The architecture of tracking wallets provides an easy way to extend and multiply the number of the integrated blockchain networks. And it’s not only powerful from the performance perspective, but also extensible. Furthermore, it is already integrated with Ethereum. And in the near future, it will support Bitcoin, Ethereum ERC20 tokens and BNB (Binance blockchain).