The most secure way: Buy a mining farm and mine the virgin coins 
You can also do cloud mining using Nicehash as well and get virgin coins this way.
Besides that, you would want to invest in it before you can generate new coins so that's a kind of risk too.
If I were to anonymize my transaction I would use Tor and create a new wallet online which is safe and secure and then use a bitcoin mixer to send the coins to my personal offline wallet.