Why not cast the hashes inside gold bars? Then just keep storing the gold. Btc storage for free.

Like this?

https://bitcointalk.org/index.php?topic=196320.0

Its 1.2% a year -- that's expensive. He states Gold ETFs pay approx. 0.08% per year to store bullion (no idea whether that's a correct number though).

But hey, it's better than paying a 2-20% fee to a hedge fund vehicle. Fees are already coming down!