Rpc Use

* **I'm submitting a ...**
[ ] bug report
[ ] feature request
[ ] question about the decisions made in the repository
[X] question about how to use this project

* **Summary**

this library is just what I need but I have a doubt, these RPCs like bitcoin who maintains them and who pays for them, I see that there is no restriction on their use so I have a doubt based on this problem
