The white paper is a good start but raises many questions.

1. How are double spends prevented? Are nodes verifying each accounts ledger similar to RaiBlocks?

2. If so how is voting power delegated if account balances are secret?

3. Is it a typo or is intended to say that nodes have wallet private keys and control those wallets?

4. Do the sender and the receiver use the same sub-address in a transaction? If so it seems this would be very traceable.

Not trying to poke holes here just trying to learn.

Thank you.