Our data integrity is such that it will survive universal cataclysm and the reduction of all data to a single point of infinite energy.[1]
[1]guarantee applies to a single bit of data[2] [2]bit value must be 1
http://journals.aps.org/prd/abstract/10.1103/PhysRevD.32.248... (S. W. Hawking, 1985 <- Just so you know it isn't a crackpot writing this. It isn't a widely accepted view though)
The Long Now foundation (http://longnow.org) has some other interesting projects besides the clock.
If you like this kind of thing, I'd suggest reading Neal Stephenson's Anathem. It might be hard to get into it, it might be his most impenetrable book yet but it really pays off later.