Too bad you do not really get any feedback, for such an elaborated study.
I am going to be honest. The only 2 names that I think can work are Yak and Mosh. They are short and have a distinguished sound to them.
Apart from the conotation of Mosh with hard rock and punk rock, I would go for that one. Because you know how to relate Mosh with social and you clearly know how to brand something. And Mosh could be used as a slang for Money, and that can also be used in the branding. Mo-neyzzzz to Mo-sh. Just an idea...
Yak is also a possibility but could be close to Yuk... So my choice goes to Mosh. And from what I am reading, I think you are leaning towards that one too.
Sincerely,
Pele23
RE: Name YOUR decentralized social network?