Interesting idea to preserve data for very long periods of time. Frank Herbert's books had an idea for a technology that preserved anything (not just data) http://dune.wikia.com/wiki/Nullentropy

There was even a character who had a pill implanted under his skin with cellular samples from many people as a fail safe reference for genetic engineering. Like an implanted library.

Could a useful technology be made out of DNA storage of bitcoin like currency or blockchain IP or contracts? How would it work? Have an implanted pill with artificial DNA inside of it encoding that information? To sign a contract you would have to stick a needle in your arm? Or a thief would need to do the same to steal it?

Or is the idea that information would be encoded in your entire body's DNA so that it would pass down through the generations in case of calamity?

The Tesla shot into space carried a backup of Earth's knowledge in case of calamity: https://medium.com/arch-mission-foundation/arch-mission-foun... The idea is that we may find it in a future where we've partially destroyed ourselves. The Arch may give that future human group a 300 year jump on science, etc.