@ Benefactor:
# Hedges on the blockchain! Let's do that, though they will debut non-crypto. Tryin' to figure out this aspect of the project was (is) the most difficult.
# A back-up Uno address is a good idea. We shall use Ian's.
# How about Phase One (which is specifically what we are discussing) ends on January 1, 2015?
The 'governor' of this project, Benefactor, will be the degree of interest. If it's a flop, it will be the work of a moment to 'unpack' it. If it is a success, we will have the energy and incentives to rejigger it.
# The issue of postage -- could the caller-outers be responsible for that? It would make the arithmetic easier (and, of course, we don't expect that there will be any postage costs involved).
If by caller-outers you mean owners of a hedge who decide they want delivery of the physical silver - yes, I think they should have to pay that. I mean, of course customers of online physical silver sales have to pay shipping; it should be the same. A huge benefit of your 'hedges' project is that nobody has to pay for shipping, but UNO holders can hedge with real silver. It's brilliant!