USDC and USDT

i have just discovered the existence of USDC and USDT.
better late than never!
is this a coin that can be mined?
it looks like just another block chain to risk your money in to me.
looking for everyone’s opinion please.
Thx

Vance just finished adding support for these coins. We don't want to release until Monday, because if something goes wrong during the blizzard there will be nobody around to solve it.

You can expect USDC to be available on Monday or Tuesday. USDT may take a little while longer.