Thank you ocminer for clarification and learning experience and thank you VergeDev Justin (?) for Action and also the learning experience and the allmost "only" mineable GPU coin since days/ weeks. I even found x17 algo last week finally.

You both should go along. Don't get ugly. Drink a Beer and laugh about later maybe.

BTW: One newbie question concerning the following.
2. It's possible to blacklist certain addresses within the blockchain. So if you know on which addresses hacked funds reside, you can simply "blacklist" them directly in the codebase of the coin.
For example you know that the attacker has used address "123abc123acb123abc" as the root for his hacked funds. You can now - at anytime - update your wallet code and just say
"orphan all transactions with the root address "123abc123acb123abc". So even if the hacker moves the funds NOW or in one year, it won't happen as you've blacklisted the originating address.
This was done previously also, not on myriad but on another coin - I can also find that commit for you.
This frightens me. So it would be possible for Governments or other entities to erase any BTC or Altcoin?
This is really frightening! What do they need for that? Some secret Key for Seed Server or what is needed?
The blacklisting would have to be accepted by majority of the miners devaluating the non blacklisting old chain (likely to zero), there is no entity who can decide that, it's miners or one could say the network itself.