Nice test, but I'd like to add two notes:
- Transactions on zkSync are not private at the moment. Zero-knowledge proofs are only used for creating rollups that are submitted to the Ethereum mainnet. Cryptographers expect them to become more efficient in the future, and then they will also be used for L2 privacy.
- Paying fees in tokens (economic abstraction) has not been implemented on mainnet. Any second layer can do what it wants though, and exchange the fees received for ETH if needed.
Ah, thanks... I missed that bit about the privacy. I think I will stick to testing out Aztec instead until that gets implemented.
Oh yes, I had meant that about the tokens paid for fees. Sorry, I probably should have written that more clearly... or perhaps I said the wrong thing due to be tired.