Configuring zkSync Payments - Node Operator This tutorial section gives you a step by step explanation exactly how to withdraw from L2 zksync to L1 ethereum address (could be your own wallet or exchange deposit addy). Please note that zkSync announced their partnership with OKex exchange today, so we expect this will soon allow SNOs who have an account with OKex to directly transfer their L2 STORJ to OKex without withdrawing to L1, thus avoiding the high zksync - L1 withdrawal fees, and then be able to convert directly to fiat currencies.
You have to do everything through the zksync site at the moment.
If you want to get access you your Storj as normal you need to transfer it to “Layer 1” which is the layer your Trust wallet uses (NOTE it costs a fortune at the moment to send it to L1. Costs an be between $60 to $90!) Then it will show up in your Trust wallet as normal. :
I’m butchering the explanations but it gives you the general ideas…
You doesn’t have a private key from the address (i.e. it’s an Exchange deposit, not your wallet), then you can use only expensive https://withdraw.zksync.io/ to the same address on Ethereum
Alternative Withdraw is used if you (for eg.) want to withdrawl to a L1 cex address, but you mistakenly send it to there L2 wallet. As you dont have the private keys, you can use Alternative Withdraw to move those from L2 to L1 on the corresponding address.
But thats only possible of that adress is not active.
… and will spend the same when you would send your funds from L1 to another L1.
The fee on L2 is depends on fee on L1, but you can pay the fee with STORJ (L2 → L1), on L1 → L1 you will pay it only in ETH.
Perhaps you did not take into consideration that there is a One Time Only activation fee on zkSync, which you do not have to pay again on subsequent transactions after the first one. I.e. after the initial transaction, fees should be similar between L2 → L1 withdrawals vs L1 → L1 transactions, and transactions L2 → L2 will be actually much cheaper, which will be an important consideration once the L2 deposits are activated on exchanges such as OKex.
@S0litiare’s reply was about the cost to transfer to L1. Those costs don’t apply if you stay in L2, which is the intention of the Ethereum developers in the medium-term future.