No it is not similar. One system requires voter registration whereas the other has no inherent notion of identities or individual accounts. They're as different as chalk and cheese.
The term “petition” is semantically misleading in this context as it implies the existence of an authority able to grant the petitioner's request; no such authority can exist in a peer-to-peer networked cryptocurrency BY DEFINITION. This leads me to conclude that the approach itself rests on profoundly flawed assumptions and is unlikely to serve the advertised purpose.
There are other approaches that are suitable but I have rather a different model of the task, so it's moot whether they have any relevance to the specific context of what's intended to be achieved by the CLAMS petition approach.
Cheers
Graham
navaman makes a really interesting point when you think about it. The requirement that voters own property (the male requirement is irrelevant to my point) may have been an implementation of a Proof-of-Stake model. Owning property is akin to having a stake in the future of a country, since your property would be worth less if the country does terribly. So really, it kind of fits together, albeit not completely.