* Recent HN discussion about the infamous AP writings: https://news.ycombinator.com/item?id=32790951
Money is speech in the US. And corporations have more of it than their advertisement recipients, which is why we see ads.
Maybe book a time slot. If the light disappears in this time slot, you get the bounty.
To be honest, that's what spray tags look like to me already, random, meaningless, unique. I've photographed hundreds of tags and have never seen two alike.
Now, hacking the ad screen with a virus that displays a unique artwork... that'd be cool.
1. Person wanting defacement would indicate the amount for the bounty, along with the message to be posted on the defaced property
2. Vandal contacts payer and agrees to conditions. He/she also gives the client their public key
3. Vandal performs defacement, then add the specified message to it, encrypted in his or her private key
4. Vandal notifies the person paying the bounty that the job is complete, sending him/her a picture of the defacement with encrypted message
4. Payer decrypts message, verifies it matches, then pays out the agreed upon bounty to the vandal
Privkey QRs would be a bit ugly
There may or may not be groups of people doing this already and posting about it in certain venues...