As of midday Tuesday, bitcoin was clinging to the psychologically important $110,000 level following a drop of more than 2% over the prior seven trading days — one that materialized as rival ether raced to record highs, potentially signaling a cryptocurrency rotation.While there’s no denying bitcoin is retreating, that pullback doesn’t mean investors should abandon the largest digital currency. In fact, some signs could be pointing to a near-term rebound. That could potentially signal a buying opportunity i ...