#bitcoin #ethereum #blockchain #cryptocurrency #bitcoinETF #coinbase $GOOG $NFLX $TSLA $FB $TSLA $AAPL $AMZN $SPY  $RVN $RIOT $BTC $ETC  Riot Announces Additional Purchase of Bitmain S19 Antminers  80% Increase in Operating Hashrate to 457 PH/s