Bitcoin’s role as an indicator of market froth has been pointing downwards all year, and several other indicators are starting to follow.Bitcoin has now dropped to as low as $US60,000, down from its record above$US124,000 set in October.Gold and silver prices have weakened more recently after a stunning run upwards suddenly paused a week ago, and even US bond market yields are now falling after some tentative signs of weakness in the US jobs market.Now, share markets have also turned down significantly, wi ...