Just received this email today and the instructions made me say " Wait what?" Lmao I'm not doing that! I just flagged it as spam + unsubscribe. SCAM.
Airdrops aren't that complicated and if you have to pay for them then they aren't airdrops lol. Also if you have to unlock your wallet? 100% SCAM.
I felt something was fishy but I did like the concept of combining BTC with ETH so I thought what a unique idea!
It appears this was a scam all along.
There have been several airdrop scams out there. One was a game coin and it wanted you to use a mist or mew wallet. So I received the airdrop ( on their site) but it wouldn't let me withdraw the coins. So I figured I had to play first. I played a few games and then won their minimum to withdraw. When I hit "submit" it gave me an error that stated something about "request to send eth" failed which was odd since I wasn't trying to send them any ether. lol. So yeah another day another scam.