Some fonts created for use with computer systems designed the "0" character more squared at the perimeters, like a rectangle, and the "O" character a lot more rounded. An extra difference is produced in falsification-hindering typeface as used on German car number plates by slitting open the digit 0 https://financefeeds.com/blockdag-drops-to-0-0018-is-this-the-top-copyright-to-buy-in-2025-before-june-13/