Hi, I am new to this project and the DAG based crypto in general.

In the whitepaper, I read

Ideas

Each block contains exactly one transaction. At the same time, the block is an address. Among all transactions, the main chain is allocated - it is a chain with the maximum difficulty. In the main chain, new coins are created about once a minute.

Can someone can explain to me how this "main chain" of DAG network is determined, and the mechanism of coin generation. Is this done completely through algorithm, or manually selected by human operators - something similar to the witness nodes of byteballs? thanks.