I don't understand why would Spanish government want to do something bad about cryptocurrency developer, even when they name there coin Catalonia Coin. We already have Navajo coin, and US government don't care about it.
What we are doing is completely legal and allowed by spanish law, but due recently scenarios where some people was reported to the courts and some of them jailed preventively when the only thing that they done was organizing a referendum or cloning websites with information about it, we decided don't announce who we are at the moment, but not being anonymous, to avoid undesired circumstances.
I also recommend read about sept-oct-nov 2017 Catalonia referendum, Spain.