How are coins, created on ethereum network mined

[nwb123]

Hello,

how are the new coins that are being created almost every day through ICOs on the ethereum network mined? Are their transactions using the already established ethereum mining network? So the miners, who mine the Ethereum coin also mine all the coins, created on its network? This is the only way I can think of, since they don't have own miners or mining system.

[Zulucia]

Hello,

how are the new coins that are being created almost every day through ICOs on the ethereum network mined? Are their transactions using the already established ethereum mining network? So the miners, who mine the Ethereum coin also mine all the coins, created on its network? This is the only way I can think of, since they don't have own miners or mining system.

Most of those coins are PoS.

[nwb123]

Most of those coins are PoS.

what about the ones that are PoW? Do they have to have their own mining network?