ZIP: 220
Title: Zcash Shielded Assets
Owners: Jack Grigg <jack@electriccoin.co>
        Daira Emma Hopwood <daira@electriccoin.co>
Status: Withdrawn
Category: Consensus
Discussions-To: <https://github.com/zcash/zcash/issues/830>
Pull-Request: <https://github.com/zcash/zips/pull/269>