I have to say this here:

These notes have the potential to be usable as an offline currency, which implies that they do not need to be verified for every transaction. But this will require that they are not circulated (delivered) until loaded, and that they will need to be verifiably and irreversibly destroyed before they can be redeemed. I vote to extend the delivery date to allow enough time to create an escrow account or whatever is required to properly secure these notes in a trustless manner. The technology involved in the creation of the silicone locked nfc alone eclipses that which would be required to secure the note. The notes can still be collectable after the maturity date with a key rotation. I know that this may also involve legal counsel regarding currencies, but, at least in some countries, the red tape is not as sticky.

Am I wrong?