I have no idea how to proof, since ice-dice is not publishing pay out history. Address I sent withdrawel to was 1LkXUE3nswmf53nDbN9PUvZLJhsvcnw57q,
unser id on ice-dice is 233390.
It was on Sunday, Decembre 14th.
He is probably asking for you to post a screen shot from the site showing the withdrawal.
The withdrawel is nowhere shown. I payed in 0.3 BTC, invested and gambled a bit, then withdrew all. Balance then was zero, but the coins just never arrived.
Coins were withdrawn without any confirmation or something.
This is what I find now when clicking withdraw.
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgur.com%2FSfTaAVO.png&t=663&c=OIby9A_16PBhmQ)