Curacao licences (which sadly seem to be virtually the only kind available to BTC operators) aren't worth the paper they are written on anyway.
BetBTC.co claim to have a Costa Rica license. Are they lying?
I haven't verified if they do have a license or not, but apeman's point is that those licenses don't really do anything. They are available to pretty much anyone, as long as you pay, and the regulatory body is pretty much useless if you have a problem with those sites/non-existent. Curacao licenses are also pretty much worthless.
I understand that licenses in the first instance are not helpful for players. But if you want to sue the operator, then they are helpful, because the licensor has to forward the identity of the operator.
However, I did not complain that bitsport.bet has no license. I complained that they false and misleading claim to have one.
I also complained that they are hiding, while on the other site reserve all the rights to ask and demand everything from their customers. This is against civil law.
And their 100 x 100 mBTC promotion also turned out as a scam meanwhile. Or probably they did not find any customers, who knows?