By Jack Denton (Photo by Oli Scarff/Agence France-Presse/Getty Images) Bitcoin and other crypto assets have had a rough ride over the past month. While the leading crypto got a boost on Wednesday after news that lawmakers in El Salvador voted to approve bitcoin as legal tender, its price remains nearly 40% below highs of around $60,000 from as recently as a month ago. Our call of the day, from strategists led by Nikolaos Panigirtzoglou at investment bank J.P. Morgan, is that two key measures indicate that bitcoin (BTCUSD) is in a bear market—and they can also tell investors when it’s over.