Exchange in 3 steps
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Choose how much OP to send and enter your Sonic address on Sonic mainnet.
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Hit Exchange to open your order page with the live rate and deposit details.
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Transfer OP to the address on your order — after confirmations, S is sent to your wallet automatically.
What do you need to know?
- 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.
- S not visible yet? Wait a few minutes, resync your wallet, then contact support with your order ID if the payout tx is already listed.
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.
Sonic
Always match S on Sonic mainnet when you send or receive — wrong-network transfers may not be credited.
Receiving S
Your wallet must be on Sonic mainnet.
Allow a few minutes after the order shows sent before opening support.
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 to S?
No. SendSwap is a non-custodial instant exchange — no account, no ID checks, and no KYC for Optimism to Sonic swaps.
How long does OP to S take?
Most swaps finish in 1–5 minutes. Timing depends on Optimism mainnet and Sonic mainnet confirmations and current network load.
Is OP to S non-custodial?
Yes. You send OP from your wallet and receive S directly to the address you provide — SendSwap never holds your keys.
What if I send OP on the wrong network?
Always match the network on your order page (Optimism mainnet for deposits). Wrong-network sends may not be credited — read our swap safety guides before you send.