Article continues below advertisementInvestigators may have missed a major opportunity in cracking the abduction case of Savannah Guthrie's mother, Nancy Guthrie, according to a cryptocurrency expert. "Whenever cyber criminals offer their wallet address is where they basically reveal themselves in many ways," Lionsgate founder and CEO Bezalel Eithan Raviv told a news outlet on Tuesday, February 10, adding that the transaction can be followed to "see where it lands.