OK - To show that this is serious I will give out SOME information here and now:

Everyone knows that in order to destroy coins one just simply has to send the coins to an address where there is no known key - but how do we know that the key is really unknown or that the coins are really destroyed?

But have you ever accidentally sent BTC to an LTC address or another altcoin address?  If you managed to do so we know that those coins are really destroyed because there is no way to generate an wallet address on one blockchain that is identical to a wallet address on a different and alternative blockchain.

But what if there was an altcoin that COULD accept coins from a different blockchain?  An altcoin that could generate coins not through mining but through finding destroyed coins on an alternative blockchain?

More to come...