There won't be any P&D, because no one will be able to buy enough and concentrate enough ownership to make it worthwhile or possible to manipulate.
Proof except promises?
Yes there will be more or less a proof that no one amassed 30% of the coin supply. And I believe it will be possible to prove from the block chain how many verified users have coins and how many coins they have. But let's wait to see the final decision before I can promise if that information will be on the block chain. I don't think that information will be mandatory, as I don't think we want a KYC block chain.
As you can see, I am not (at least not initially) going after the anonymity features.