Still the application of demo dat rule is not a forgone conclusion when it comes to bitcoins. It doesn't apply to legal tender and it also doesn't apply to bearer instruments (i.e. casino chip),
Note: to be clear I am not saying I have the answer just pointing out the law is pretty slow to react to technological changes. This and countless other questions will eventually be decided but the timescale is measured in decades.
Not sure what the demo dat rule is. Perhaps that there is a uniqueness to the stolen property? I see that dollars have serial numbers and now so do casino chips. So if the demo dat rule doesn't apply to seralized numbered dollars it doesn't apply to casino chips even tho now they have rfid tags internally (saw it on CSI used as evidence) so maybe the demo dat rule does apply to serialized numbered dollars. It likely applies to serialized numbered dollars having been marked with an explosive dye pack from a bank robbery.