<p><img src="https://images.cointelegraph.com/images/840_aHR0cHM6Ly9zMy5jb2ludGVsZWdyYXBoLmNvbS91cGxvYWRzLzIwMjQtMDUvODQ1MjkyYzItYTRmMi00ZWYyLTk2MTQtYjkxODcxNWFjZThkLmpwZw==.jpg"></p><p>Bitcoin upside strength causes pain for shorters, but doubts remain over whether the BTC price rally can last much longer.</p>