Because of my recent wedding I applied for Asgardia citicenship with my future surname. I am currently doing the paper work and will get new identitfication documents. I filled out the form, but i assume the reader is a bit confused because I use two names. There is no way to explain the situation because the application form does not provide the extra space for remarks. You need to change that!

digital signature are good since they are not self created,  it need a external authority who's well known for secure and access at the key who said it isn't a fake one.

it exist some  system who use private and public key to certificate user, but they are  hard to make and use if you haven't use it quite often.

I don't have any experience with this stuff, so don't take my word for it, but virtual signatures are very problematic. As far as I know it's really easy to steal identity with them, fake them and just go around using them. The only positive thing I heard of them is that they are very comfortable to use. I'm pretty sure we will need to find another way of accessing Asgardian digital part without endangering ourselves and/or Asgardia.
But as I said - I'm only speaking from things I heard and read. If someone who knows better could prove me wrong or support my words it would be highly appreciated.

The tyranny of group think cannot be underestimated. A perfect democracy works best for a tiny group in the same geographic region. Out in space, we'll need a balance between group vote and leadership votes. We'll have to decide what kinda leadership we need aka representative (leader is the megaphone for the people) vs elected (leader uses their own judgement to fulfil role requirements). Those two can and do co-exist however the challenge will be bringing harmony to that role. It will rely on trust above all else. Can we trust leaders to do their duty?

An absolute democracy would devolve into tyranny or anarchy pretty quickly I think. Group think isn't always correct and it can easily lead to the 51% to do whatever they want to the 49%.

So I assume you're mainly talking about a constitutional democracy? So we'd be protected by rights that would prevent the majority from harming the minority?

Also, in a dire situation, I would think it would be more difficult for an individual to make a vote for what's best for humanity if voting against would save their own life. I believe sometimes you need that leader to make the tough decision of what's best for humanity. In space I bet though choices would become more frequent, or I'm just watching too much of "The 100". :)

Just putting some thoughts out there, playing devil's advocate. The blockchain idea is great though. We should integrate that technology into our Asgardian systems.