You could invent your own. It wouldn’t stop someone who was really determined to trick you, because the tradeoff between convenience and perfect security would likely leave you vulnerable to reverse engineering. But that being said, you can take your message, reverse it, Caesar cypher it, replace letters with numbers, drop vowels or spaces, etc etc until you’ve mangled it into a “hash” that only you know how to produce.
Easier to have a cryptic rule, such as “third sentence in every entry must have exactly three words, and the last word in the entry must rhyme with the very first word.” That would validate the entry with far less work, and people would need massive sample sizes to have any chance at finding the pattern.
You could invent your own. It wouldn’t stop someone who was really determined to trick you, because the tradeoff between convenience and perfect security would likely leave you vulnerable to reverse engineering. But that being said, you can take your message, reverse it, Caesar cypher it, replace letters with numbers, drop vowels or spaces, etc etc until you’ve mangled it into a “hash” that only you know how to produce.
Easier to have a cryptic rule, such as “third sentence in every entry must have exactly three words, and the last word in the entry must rhyme with the very first word.” That would validate the entry with far less work, and people would need massive sample sizes to have any chance at finding the pattern.
Oooh this is good
It doesn’t prevent any changes to the content, but that’s what pen is for.