btc-ftw2

Do you have a development schedule/roadmap? And will you also be releasing a sample sidechain implementation?

You guys introduce the concept of Bitcoin as a DMMS (dynamic membership multiparty signature). One limitation of Bitcoin as such (if I understand the point properly) is the linear nature of the "signature". In other words, size of the signature grows linearly as time progresses.

Another DMMS would simply be ever increasing difficulty. That is, discovering a SHA256 of a particular document (+ changes) that has more initial zeros than the prior discovery. This DMMS has constant data size (and therefore validation time) but unfortunately each "block" is twice as hard to solve as the prior one.

Can we find a DMMS with constant data (and validation time) AND something better then exponential difficulty increase? (constant, linear, adjustable)

Yes I was trying to do the same thing here -- pointing out how valuable a compact DMMS would be, in the hopes that you guys with more time and cryptographic experience than I might start considering it :-).