I've been reading a lot about the 1000 BTC bounty for cracking a range of private keys.
Even if they give 10,000 BTC, the bitcoin private key can't be cracked, atleast for now. We don't knwo about the future, but currently bitcoin is secure and there is no threat to bitcoin in terms of cracking the private keys. So if this thing is bothering you from investment in bitcoin, do not be afraid.
It made me think... Hypothetically, if some was able to crack a BTC address with key, Do they own the coin?
If this happens and they tell the world that bitcoin private key is cracked, the bitcoin may dumped to zero and therefore the person getting the 1000 BTC wont be able to make any money. Secondly, having a private key means that you own that bitcoin and can spend the funds.