Around one hour before the Bitcoin price broke through the $51,000 level, Ki Young Ju, the CEO of South Korean blockchain analytics startup CryptoQuant, pointed that the “Coinbase Premium Index” had gone positive again, which is a bullish indicator. According to CryptoQuant, the higher the gap between the Coinbase price for Bitcoin (BTC-USD) and the Binance price for Bitcoin (BTC-USDT), the higher the premium, and thereby the stronger the spot buying pressure from Coinbase (which is the exchange most popular with investors in the U.S.).