Now we can compare, since a few days ago the Ropsten network just verified a Zcash transaction via a zkSNARK. Check it out here.
- Confirmation time: the same as for a usual Ethereum transaction.
- The on chain verification transaction consumed 1933895 gas, which with a 21 Gwei gas price would approximately cost $10.722 on the mainnet.
- cca. 0.7kB
To put things into perspective, let's have a look at Zcash shielded transactions:
- Zcash block interval is 2.5mins and it takes around 5 block confirmations to fully settle a transaction.
- Have a look at average Zcash transaction costs. These days it's around $0.0005.
- Anonymous Zcash transactions seem to be approximately 2 kB, according to Zcash engineer Sean Bowe.