Random, totally not thought all the way through, idea. Could a decentralized nullifier be put in the blockchain? Allow the consensus algorithm to "vote" for whe

Random, totally not thought all the way through, idea. Could a decentralized nullifier be put in the blockchain? Allow the consensus algorithm to "vote" for when an address should be marked as invalid and miners would reject transactions with it. It would work by someone submitting an "anti-coin" transaction and wagering their own coin. Miners would provide PoW to confirm the transaction but instead of the miners collecting a reward they pay a fraction of the initial wager. Once enough blocks with a confirmation of the anti-coin are mined to pay back the wager it's accepted as permanent. Now the only way to use that address would be to fork the blockchain. On the other hand, if the anti-coin is not accepted the submitter loses their wager, so it becomes expensive to attempt to destroy coins without cause. But I don't know nearly enough crypto to even guess at whether or not this is a really stupid idea. Don't torch me for being foolish.