If his search is ever successful, what data will be compromised?
Is there a list of BTC addresses that LBC can provide to miners, asking them to filter out transactions from them until further notice?
A protocol for that kind of lock would be nice. I would honor it if I were mining. Just a simple request "please lock this BTC addy until further notice," signed with the address would do. It could be broadcast in any transaction and thereby get to all miners.
Ahh, of course if it could be unlocked with a signature from the same address, it would be kind of useless. But suppose it had to be unlocked with a signature from the same address that locked it? So the attacker would need that external address' private key too.