Bitcoin is trading near $81,359, with analysts eyeing a potential rise to $90,000 if it breaks out of its current rising channel. Key support levels are identified at $74,917, with a highlighted support zone between $76,103 and $77,709 based on Fibonacci retracement levels. A breakout above the channel could signal further gains, while a drop below $74,917 may lead to a deeper correction. Meanwhile, Bitcoin's market dominance has increased to 61.21%, up from the yearly open of 59.55%, as altcoins continue to weaken against BTC. The next resistance level for Bitcoin dominance is at 62.24%. Ethereum's performance against Bitcoin is also contributing to the pressure on altcoins, with ETH/BTC near its February lows. A break above 62.24% could further extend Bitcoin's market share, while a rejection might allow altcoins to recover.