It's rather that you can see when somebody tempered with the private key. Scratch seal, stamp + eyelet closing of the card sleeve.
https://npub1yyn2ulrwuda5gh44p5z25uml47d4c04p9gg76375u2m3n83a6ntq5zlsxz.blossom.band/5eb4c7b23e5b61de57294295395664564b990df01a88b864d68e1d096e1494ef.jpg