Money is backed by regulatory tradition, which means every dollar has to be accounted for with a serial number. They notes they hold is assigned to your account based on the whole dollars. Frankly any coin money is worthless, that's likely the worst thing, I can't find serial numbers on them, unless maybe a chip, not sure about that. The notes are traced by serial numbers.
We build Freedom Of Speech Software. We champion free speech, individual liberty and the free flow of information online. All are welcome.