Here's my 3 satoshis.
1. Launch the website and let folks register to prove it was functional. Put 5 Credence Coins into the wallet on the website for anyone who registers. Folks can then test and send Credence to their desktop wallets and confirm it was a function website linked to the block chain.
2. Hardfork to the block prior the funds got stolen.
3. Issue new wallets that is on the new chain after all nodes have been update.
Unless those 3 happen I could care less about this coin. I don't really care for a refund at ICO prices, partial or even full.
I 2nd this idea.
The problem are all the folks who bought after that block where the funds got stolen on the external exchanges. I guess they could send proof they own the old credence coin, but the logistics of that would take weeks with a lot of people. Doesn't seem realistic.
CoinBull