BlockStamp (BST) is a new digital currency intended to store user data in blockchain. It is based on Bitcoins peer-to-peer technology to operate with no central authority. The goal was to create a new fast and effective blockchain that could be used for trusted timestamping of documents. Currently, BlockStamp blockchain is used as the core of an online gambling platform. Future uses will cover timestamping dedicated for banking purposes,DNS and more.
BlockStamp airdrops 25 BST token (~$2,15) to their airdrop participants for the following simple tasks. They also offer a referral program where you can earn additional BST. BlockStamp is listed on Coingecko.