The 1x10 requires you to do a full Ironman within 24 hours for 10 days straight. The 10x1 gives you 13 days to accomplish the whole distance. I have to imagine the bike leg absorbs a vast majority of those days. The Deca triathlets follow the IUTA rules.

Here are the basics:

• Swim: Indoor or outdoor, pool or open water allowed, wetsuit allowed, no fins or other accessories to aid in propulsion.
• Bike: Must be outdoor, no drafting, no trainers, and no ellipticals.
• Run: Indoor or outdoor, no treadmills, no pacers and no aid in forward momentum by others.
• 24 hour clock for the One-a-Day and 13 days for the Classic.

I have been looking around but I haven't found anything on his progress. He did not overly advertise himself except setting up his two charity donation pages. I found out through triathlete friends in San Diego who know him. It's possible he wasn't going to do a lot of fundraising until after he finished. I also think the organization is following/verifying his accomplishments and may be protecting it from the public.