I get the cynicism of the Simpson's post (and chuckled along with it.) But in reality, this is a pretty good idea. The NSA suffered a second Contractor theft of Government secrets just a short time ago and there's no doubt that positive control of Top Secret information is more vital than ever in today's environment. With the exposure of highly advanced persistent threat tools becoming more common place, exasperated attacks from foreign intelligence services, organized crime, and such forth, being able to quickly identify who accessed what information, when it was accessed, what was done to it, where it went, and where it is now is all very vital information. Blockchains aren't a perfect solution to all that information, but they are a start. Say for instance information is stolen by a contractor. If the blockchain is required in order to use the information, then there's a traceable stamp of where it's been when it's released by reporters. This could quickly aid in the prosecution of those involved in the theft.