Bitpanda is well known for me. I had no problems ever since. I have invested on Pantos, just to contribute to the Bitpanda community. The idea is solid, let's see how it will go.
You can participate only via bitpanda.com. You don't need to be verified, you just need to register yourself and deposit money via fiat or sending from your wallet.
Airdrop is available for registered users, without any qualifications.