Tunnel in 3 steps
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Choose how much OP to send and paste the Zcash address that should receive funds on Zcash mainnet.
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Open the order to freeze the quote and reveal a one-time deposit destination.
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Broadcast OP to that destination. Once confirmations clear, ZEC is pushed to your payout wallet.
Before you broadcast
- Optimism confirmations are usually fast — often within a minute.
- Send OP on Optimism mainnet only — not Ethereum, Base, or Arbitrum unless your order says otherwise.
- Use an Optimism-compatible wallet and address (0x…). Leave enough ETH on Optimism for gas if sending ERC-20 tokens.
- Still waiting on ZEC? Give the wallet a few minutes to sync, then share your Exchange ID with support if the order already lists a payout hash.
Optimism — Ethereum L2 with low fees
OP is the governance token of Optimism — an Ethereum rollup with fast, low-cost transfers and deep Superchain liquidity.
OP on Optimism mainnet
Use an Optimism wallet for deposits. L1 Ethereum or other L2 sends may not be credited.
Leave enough ETH on Optimism for gas when moving OP or other tokens.
Zcash — optional shielded privacy
ZEC supports transparent and shielded addresses — pick the receive format your wallet actually supports.
ZEC receipt troubleshooting
Confirm address type matches your wallet. Rescan the blockchain in your Zcash client if needed.
Transparent vs shielded payouts
Zcash supports both transparent (t-) and shielded (z-) addresses — they are not interchangeable.
- Use the address type your wallet actually supports before placing the order.
- Shielded payouts may take longer to appear depending on wallet software.
- If the order shows a sent tx but balance is zero, rescan the chain in your Zcash client first.
Before you swap
Avoid wrong-network deposits and address format mistakes — read these guides first.
Coin swap hubs
More no-KYC swap pairs and guides for each asset.
Frequently asked questions
Do I need KYC to swap OP for ZEC on TunnelSwap?
No. TunnelSwap is an anonymous no-KYC, privacy-first exchange. There is no account, no ID upload, and no standing balance for Optimism → Zcash swaps.
How fast is a OP → ZEC swap?
Most routes settle within minutes. Final timing follows Optimism mainnet deposit confirmations and Zcash mainnet payout speed.
Does TunnelSwap hold my OP or ZEC?
No. You fund the deposit from your wallet and ZEC is sent straight to the address you paste — non-custodial, wallet to wallet.
What if I use the wrong network for OP?
Only send on the network shown for the order (Optimism mainnet). Wrong-chain deposits can be unrecoverable — review the safety guides before you broadcast.