I do not see any founder of these companies in their team. Only Investors.
THe story ounds good. Maybe to good?
did you go to
http://spacechain.com/ ? it does list the team members. you can click on them for a bio.
jeff garzik and and tim draper also have confirmed their involvement on their twitter so its real they are all team members.
i really like that tim draper is in. he invested in skype when it was just a p2p filesharing tool. then they made it into a p2p voip/telephone software. and then they made it into a p2p videotelephone software (the first) and it became big.
i hope they can do the same with spacechain and find new ways to use the infrastructure to help a lot of people and society as a whole.