...Now that doesn't make any sense. Since when do you walk into a building with 15000+ Euro in cash, hand it over to people, and walk out the building with NOTHING TO SHOW FOR IT. ...
Was it in person, with cash? Or by check, or bank transfer?
If cash, they must have got a paper receipt. If by check or transfer, they can get the bank's records that show the deposit.
Either way, they can prove in court, if necessary, that they gave money to N&B. Then it is N&B's burden to prove that they received bitcoins or something else in return.
Makes about as much sense as sending your coin to some guy on the intertubes. With nothing to show for it.
People do strange shit, it be fact.
Wait, you mean that N&B
bitcoin investors have no way to prove in a court of law that they gave their BTC to N&B?