You don't. Any miner can claim it later. It already exists, and it is called "transaction fee". They already are. There are ways to use Merged Mining, without forking the chain. P2Pool did it in the past. NameCoin implemented Merged Mining in a wrong way, because it is possible to do 51% attack on NameCoin, even if you cannot do 51% attack on Win Pe. They should trace the heaviest chain of double SHA-256 headers, and calculate the global difficulty, based on that. Instead, they have their own difficulty, which is one of their mistakes. Edit: Not to mention, that they created their own token, out of thin air, even though there was no need to do so. Instead of generating 50 coins in the coinbase transaction, they should create 50 domain names, as it was suggested in BitDNS topic. They should not release any new coins at all, because a payment system was not their designed goal. They wanted to replace DNS, so they should have only domain names in their chain. And they should support buying domains with BTCs, instead of forcing everyone to exchange BTCs into NMCs. Also, in practice, NameCoin was made obsolete by vanity addresses. Why would you care to buy a name on some Win Pe, if you can send someone your public key, some miner can grind you the name you want, and you can pay in BTCs for doing that? And also, it costs zero additional on-chain bytes, because you just replace your random public key, with some grinded public key, and then you have your grinded name, while also having the rest of your address, as some kind of "instance ID", which makes it possible to claim the same name by different coin owners, while also having unique identifiers.
You don't. Any miner can claim it later. It already exists, and it is called "transaction fee". They already are. There are ways to use Merged Mining, without forking the chain. P2Pool did it in the past. NameCoin implemented Merged Mining in a wrong way, because it is possible to do 51% attack on NameCoin, even if you cannot do 51% attack on Win Pe. They should trace the heaviest chain of double SHA-256 headers, and calculate the global difficulty, based on that. Instead, they have their own difficulty, which is one of their mistakes. Edit: Not to mention, that they created their own token, out of thin air, even though there was no need to do so. Instead of generating 50 coins in the coinbase transaction, they should create 50 domain names, as it was suggested in BitDNS topic. They should not release any new coins at all, because a payment system was not their designed goal. They wanted to replace DNS, so they should have only domain names in their chain. And they should support buying domains with BTCs, instead of forcing everyone to exchange BTCs into NMCs. Also, in practice, NameCoin was made obsolete by vanity addresses. Why would you care to buy a name on some Win Pe, if you can send someone your public key, some miner can grind you the name you want, and you can pay in BTCs for doing that? And also, it costs zero additional on-chain bytes, because you just replace your random public key, with some grinded public key, and then you have your grinded name, while also having the rest of your address, as some kind of "instance ID", which makes it possible to claim the same name by different coin owners, while also having unique identifiers.

You don't. Any miner can claim it later. It already exists, and it is called "transaction fee". They already are. There are ways to use Merged Mining, without forking the chain. P2Pool did it in the past. NameCoin implemented Merged Mining in a wrong way, because it is possible to do 51% attack on NameCoin, even if you cannot do 51% attack on Win Pe. They should trace the heaviest chain of double SHA-256 headers, and calculate the global difficulty, based on that. Instead, they have their own difficulty, which is one of their mistakes. Edit: Not to mention, that they created their own token, out of thin air, even though there was no need to do so. Instead of generating 50 coins in the coinbase transaction, they should create 50 domain names, as it was suggested in BitDNS topic. They should not release any new coins at all, because a payment system was not their designed goal. They wanted to replace DNS, so they should have only domain names in their chain. And they should support buying domains with BTCs, instead of forcing everyone to exchange BTCs into NMCs. Also, in practice, NameCoin was made obsolete by vanity addresses. Why would you care to buy a name on some Win Pe, if you can send someone your public key, some miner can grind you the name you want, and you can pay in BTCs for doing that? And also, it costs zero additional on-chain bytes, because you just replace your random public key, with some grinded public key, and then you have your grinded name, while also having the rest of your address, as some kind of "instance ID", which makes it possible to claim the same name by different coin owners, while also having unique identifiers.

You don't. Any miner can claim it later. It already exists, and it is called "transaction fee". They already are. There are ways to use Merged Mining, without forking the chain. P2Pool did it in the past. NameCoin implemented Merged Mining in a wrong way, because it is possible to do 51% attack on NameCoin, even if you cannot do 51% attack on Win Pe. They should trace the heaviest chain of double SHA-256 headers, and calculate the global difficulty, based on that. Instead, they have their own difficulty, which is one of their mistakes. Edit: Not to mention, that they created their own token, out of thin air, even though there was no need to do so. Instead of generating 50 coins in the coinbase transaction, they should create 50 domain names, as it was suggested in BitDNS topic. They should not release any new coins at all, because a payment system was not their designed goal. They wanted to replace DNS, so they should have only domain names in their chain. And they should support buying domains with BTCs, instead of forcing everyone to exchange BTCs into NMCs. Also, in practice, NameCoin was made obsolete by vanity addresses. Why would you care to buy a name on some Win Pe, if you can send someone your public key, some miner can grind you the name you want, and you can pay in BTCs for doing that? And also, it costs zero additional on-chain bytes, because you just replace your random public key, with some grinded public key, and then you have your grinded name, while also having the rest of your address, as some kind of "instance ID", which makes it possible to claim the same name by different coin owners, while also having unique identifiers.