Verified.
Why would he be willing to do a 1 for 1 trade? The market rate on bitfinex
(which I am fairly confident that you use) for BTU is 0.2102 while the market rate for BCC 0.758, both in terms of BTC. So for this to be a fair trade, you would need to offer him 3.6 BTU for every 1 BCC that ver gives you.
edit: no longer confident you use bitfinex; my prior presumption was due to a coinjoin transaction. It does however look like you might have withdrawn 50,000
BTC from SilkRoad in Sept 2012, worth ~$610,000 at the time, or you may have purchased some coins from someone who did this.
8b1d30919a006a05220deff1c0cf909c10830e2ec4dd66ce310a5f657e2afd8b