I think it is.......look at this eBay auction:

http://cgi.ebay.com/2006-WORLD-SERIES-OF-POKER-CHIPS-WSOP-CHIPS-300-pcs-NR_W0QQitemZ180038220134QQihZ008QQcategoryZ63758QQrdZ1QQcmdZViewItem

I emailed the seller and asked if these were the real chips used in the WSOP. Curious to see the response.