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...
meh...
$ randhex 32
D391EFDB25A444378BCE5FA210FDD4D1463E42B1D6AF40B6448C5D7B6D81F8E4
$ key_priv2pub D391EFDB25A444378BCE5FA210FDD4D1463E42B1D6AF40B6448C5D7B6D81F8E4
032354D13BC27086470F9160F808B1874129D44CF2DA10ADB242570EA111AFD696
1PCvTZ6Jn8KYMfP3t3r2eU4N5dRbU5MzSe - bitcoin
n3iskcBHb9ko8mrfbcpQUPGgwd2JV94LdS - testnet
LhRsimQ8rnZbcU5D4BqKvV88HqnsenDJG6 - litecoin
what are you saying here exactly? you can't just send litecoins to a bitcoin address or vise versa because the wallet will fail on a wrong network version byte. if you meant "send them to the valid address on another chain", then you can obviously still redeem it because the p2pkh script is still solvable with the same conditions (hash160 matches the pubkey).
unless you mean something else?
if you want to accept coins from a different chain, this is a good starting point:
https://en.bitcoin.it/wiki/Atomic_cross-chain_tradinglet me know if I just didn't get what you mean.