It's bitcoin addresses that are logged and so the association with cryptocurrency, we take every security precaution, we dont store any master keys, the subkey addresses are stored as hashes, etc.
Just because you have a string of numbers in the form of a bitcoin address doesn't mean that you are actually using the cryptocurrency. They are just unique identifiers derived from a master key, it has nothing to do with cryptocurrencies. Can you prove ownership of the baby address inthe blockchain? nope. Do you use those addresses (to receive some dust, for instance) in any way? nope.
So what if you don't store any master keys? you are still a centralized point of failure. When you say that a certain address has not been submitted before, why should I trust you? (since the database that counts how many times it has been submitted can be altered)
No, that would be silly, the pills are so numerous for a start that people wouldn't bother to scan them on a regular basis. I suspect the bottle would be more sensible. The image gets the idea across quite nicely though.
Then what's the point of this? Just put a tamper-proof device in the bottle and be done with it. The image does get an idea across quite nicely, shame it is not actually the idea you have.
Like, if the image you are using to get your point across shows something that is, in your own words "silly" and you cannot even be bothered to put enough effort to a) show a proper representation of your idea and b) learn how to photoshop a QR code on top of an image. Why would anybody believe you are going to be acting professionally?
Well that's a murderer and there's no stopping him.
Well, you have convinced me of the usefulness of your system.