This "send me btc to send you more btc"scam has been happening for the past few months and Charles Hoskinson (https://twitter.com/IOHK_Charles), founder of the Cardano blockchain was warning about this issue for a while, he mentioned his team was trying to get in touch with twitter and youtube to stop this and these companies have let this slide for a while.

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some are wondering if this is some type of money laundering scheme https://twitter.com/nktpnd/status/1283521742602940420