This is the second airdrop by blockchain company, a well trusted wallet in terms of cryptocurrencies. The first airdrop was of stellar coin, every user who completed the task got 25$ worth of stellar coins. Now everyone will get 10$ worth of Blockstack.
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For donations
Bitcoin address:
1FJeCf4v4FJJTGAcZDCYk25dDsbWx6na5M