Bitcoin clocked six-day highs above $9,000 over the weekend, but a long-term bull market revival may not be on the cards, yet.Having clocked a high of $9,070.64 on Saturday, prices again fell back below $8,000 briefly on Sunday before climbing again. CoinDesks's Bitcoin Price Index(BPI) was last seen at $8,772.The cryptocurrency has appreciated by 9.70 percent in the last 24 hours, as per data source CoinMarketCap. Bitcoin (BTC) is also close to 40 percent above last week's low of $5,947.40.So has the cryptocurrency bottomed out?To start with, the sharp recovery from lows below $6,000 does indicate a short-term bottom is in place. However, BTC is still down 39 percent on a year-to-date basis. Further, the series of lower highs as represented by the falling trendline is still intact.