I think "PGP WoT but hopefully actually usable" is a good way to describe it, but the system is at least blockchain-adjacent. As the user guide[0] says:
"BrightID and IDChain itself use DAOs on IDChain for governance."
and:
"IDChain (IDChain.one) is a proof-of-authority blockchain where validators are democratically elected by BrightID-verified unique humans."
