Sremoveden… Sremoveden!

Which app/website adds these notes?

I get what you mean, but no, it would not be secure. The private key in question is really used as a number in a calculation, not as a string of digits. Leading zeroes would just be ignored.

You forgot the /s. If you didn’t: it’s a pilot project, not a literal pilot.

I was gifted one last year and I love it. It has 8 little springs taken from pens, so the legs are springy.