They still use the bolockchain system, and it may need to store the altcoin into a specific for the generation of new altcoin , or through the ERC token system for the distribution of new coin, but there is a concern that, which is dangerous to put most of the coins into a specific, and the meaning of blockchain will lost, and POS solution may centralize the market....
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I get that but how will transactions be verified if there is no mining? Isn't that the engine of for example Bitcoin?