1219 ET [Dow Jones]--Gains in bitcoin through August have inspired optimism in the cryptocurrency space, with CoinMarketCap's Fear and Greed index at 77 out of 100, a "greed" reading. But the foundation of these gains are possibly not as strong as some may have hoped. "Perpetual-futures positioning shows the move up came mostly from shorts being liquidated and covered; few new long positions were opened, and shorts have started to rebuild," say analysts with CryptoQuant in a note. Bitcoin has broken through the $80,000 mark, trading up 4.7% to $81,054. Ethereum rises 4.7% to $2,506, XRP climbs 7.4% to $1.45, and Solana is up 4.8% to $104.45.