3 ms·

Banknotes have serial numbers printed on them. It's not inconceivable for ATMs to record serial numbers when withdrawing and banks to record serial numbers when

• ronsor 4y ago
  You always can exchange banknotes for other banknotes of equivalent value, with anyone.
  • notch656a 4y ago
    That's exactly what tornadocash was doing, and the government claimed it was money laundering and blacklisted the exchange.