Consensus is not a suitable mechanism for authority. Consensus has many uses, but for use-cases where authority is a hard requirement - such as this one - consensus is simply not suitable. Authority needs to remain authority even if a bunch of other people would like it to be otherwise.
If the NSA can throw enough computing power at it and seize control of consensus to determine which keys are authoritative, then your whole PKI is useless.
I repeat: consensus is not a suitable mechanism for authority. Consensus has many other uses. Would you use a watermelon to lock a door?
If the NSA can throw enough computing power at it and seize control of consensus to determine which keys are authoritative, then your whole PKI is useless.
I repeat: consensus is not a suitable mechanism for authority. Consensus has many other uses. Would you use a watermelon to lock a door?