Bitcharting 

"Scammers are using social media to perpetuate giveaway scams. They post screenshots of forged messages from companies and executives promoting a giveaway with hyperlinks to fraudulent websites. Fake accounts will then respond to these posts affirming the scam as legitimate. The fraudulent websites will then ask that you “verify” your address by sending cryptocurrency to the scam giveaway."
- Coinbase

This is what bitcharting does, they say that you have won a giveaway, you claim your prize but then you're asked to send 0.01btc to verify the account. They have bots in their chat room to make it seem legit.

Just recieved an invite to this site via discord claiming that I had won a prize of 0.55 BTC
This fact alone rings alarm bells. Nobody is going to give away $25000.
Also there is only one web result when trying to search for reviews. Also suspicious.
I played along to try to withdraw the bitcoin that I had 'won' but it obviously doesn't work. It just tells you to contact customer support. Which I will not be doing.
All feels very scammy. So I thought I would start the ball rolling for other people whom this 'company' may try to scam.
(Looks too good to be true, It is)