BTC address used during the ICO: 1J5RjgAHg8YPe6jF44vBJPF6Epwgf65PFY
Looking at that address on the blockchain I don't think that was the XLTH ICO Bitcoin Address, wasn't it hidden ?
It doesn't mean that it is also involved, but there was a tx.
https://blockchain.info/nl/address/13vHWR3iLsHeYwT42RnuKYNBoVPrKKZgRv
That's $1.270.251
It should be bittrex's wallet, it is familiar with that, but I am not sure. How many bitcoins did people lose in this scam? The addy you provided in OP has tiny amount