During the witch trials in Europe (16th and 17th centuries), people believed that witches could cast spells on coins, cursing those who carried them. To protect themselves, individuals would carve symbols or initials onto their coins, hoping to ward off any potential magical evils. These were called "witch marks" or "apotropaic marks," and were thought to safeguard the coins' value and protect the carrier from harm.

Is there a digital equivalent to carving onto a bitcoin--just to be sure?