Barry Silbert

@maromario

I'm the Founder and CEO of @dcg.co, parent of @GrayscaleInvest @GenesisTrading @CoinDesk, investor in 150 cos, $BTC $ETC $ZEC $MANA $ZEN $LPT

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Obsidian business network (All about bitcoin and cryptocurrencies)

We are group closely focused devoleping obsidian bussines to bussines network and providing crypto education