[cohomologo]

From the ARCH foundation FAQ:

Beyond the laser based digital layer there may also be layers that require the ability to detect and decode molecular, atomic scale or subatomic scale (quantum or holographic) information. We can already encode data in this way, but reading it requires very advanced technology.

They seem so clueless that even if I bought into the underlying mission of preserving data by sending it into space, I wouldn't trust this group to do it.