Swap DAI on Optimism to USDC on Scroll

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What you need to know

DAI and USDC: two stablecoin ledgers

DAI is a crypto-backed dollar-oriented stablecoin whose canonical and bridged contracts vary by network. Its peg design does not make two network representations interchangeable. USDC is an issued dollar-oriented stablecoin with canonical, native, and bridged variants across networks. Contract events and issuer controls differ from a network-native gas asset. The route changes both asset identity and network representation; dollar-oriented pricing does not remove issuer controls, liquidity spread, contract, or receiving-network checks.

DAI input identity and handling

Dai is classified as a stablecoin for this route. DAI uses a network-specific contract asset on Optimism. The recorded Optimism representation uses 18 decimal places. DAI leaves through its network-specific stablecoin contract and can require approval; the collateral design does not make a bridged DAI contract canonical.

USDC output identity and receiving

USDC is classified as a stablecoin for this route. USDC uses a network-specific contract asset on Scroll. The recorded Scroll representation uses 6 decimal places. The wallet must support the destination USDC native label or contract. Receipt does not automatically supply the destination network’s gas asset.

Optimism to Scroll L2 handoff

This route crosses two L2 execution environments. Optimism settles to ethereum, while Scroll settles to ethereum; each side keeps its own gas balance, token contracts, transaction hash, and settlement progress.

Optimism source execution

Optimism is a L2 EVM network in the Ethereum ecosystem. ETH pays source-side network gas on Optimism. EVM 0x account address An OP Mainnet source uses sequenced OP Stack execution and ETH gas; ordinary route processing is not the same as the canonical L2 withdrawal delay.

Scroll destination execution

Scroll is a L2 EVM network in the Ethereum ecosystem. ETH pays destination-side network gas on Scroll. EVM 0x account address A Scroll receipt is an L2 native or contract balance whose proof settlement to Ethereum is a separate milestone; later activity uses ETH on Scroll.

Mistakes specific to DAI Optimism to USDC Scroll

Route-specific mistakes include sending on a network other than Optimism; using a destination that is not valid for Scroll; running out of ETH before the source transaction is submitted; selecting a stablecoin by ticker without checking its network contract. An OP Mainnet source uses sequenced OP Stack execution and ETH gas; ordinary route processing is not the same as the canonical L2 withdrawal delay. DAI leaves through its network-specific stablecoin contract and can require approval; the collateral design does not make a bridged DAI contract canonical. A Scroll receipt is an L2 native or contract balance whose proof settlement to Ethereum is a separate milestone; later activity uses ETH on Scroll. The wallet must support the destination USDC native label or contract. Receipt does not automatically supply the destination network’s gas asset.

Private Route for DAI → USDC

Optimism wallet, token-transfer, contract, log, and gas activity remain public, and Scroll wallet, token-transfer, contract, log, and gas activity remain public. For this DAI on Optimism to USDC on Scroll path, Private Route is intended to reduce the direct visible relationship between activity around the source-side EVM 0x account address and destination-side EVM 0x account address; it does not hide either chain's public records.

  • Reduces the obvious link between the DAI deposit and USDC receipt
  • Compare standard and Private Route options for Optimism → Scroll
  • Shows what remains public on Optimism and Scroll before you deposit
Check Private Route availability →

Related routes

Swap DAI on Optimism to USDC on Scroll FAQs

What exactly leaves Optimism as DAI?

DAI is a contract representation on Optimism with 18 decimals at 0xDA10009cBd5D07dd0CeCc66161FC93D7c9000da1. ETH, not DAI, pays gas unless both symbols are the same. An OP Mainnet source uses sequenced OP Stack execution and ETH gas; ordinary route processing is not the same as the canonical L2 withdrawal delay. DAI leaves through its network-specific stablecoin contract and can require approval; the collateral design does not make a bridged DAI contract canonical.

What exactly arrives on Scroll as USDC?

USDC is a contract representation on Scroll with 6 decimals at 0x06eFdBFf2a14a7c8E15944D1F4A48F9F95F663A4. ETH, not USDC, pays gas unless both symbols are the same. A Scroll receipt is an L2 native or contract balance whose proof settlement to Ethereum is a separate milestone; later activity uses ETH on Scroll. The wallet must support the destination USDC native label or contract. Receipt does not automatically supply the destination network’s gas asset.

Why does the DAI to USDC direction matter?

DAI leaves through its network-specific stablecoin contract and can require approval; the collateral design does not make a bridged DAI contract canonical. On receipt, The wallet must support the destination USDC native label or contract. Receipt does not automatically supply the destination network’s gas asset.

What changes between the source and destination asset roles?

DAI is the deposited stablecoin input; USDC is the quoted stablecoin output. Source allowance or native-spend rules and destination wallet/representation checks are evaluated separately.

What should be matched before sending DAI?

DAI leaves through its network-specific stablecoin contract and can require approval; the collateral design does not make a bridged DAI contract canonical. An OP Mainnet source uses sequenced OP Stack execution and ETH gas; ordinary route processing is not the same as the canonical L2 withdrawal delay. A Scroll receipt is an L2 native or contract balance whose proof settlement to Ethereum is a separate milestone; later activity uses ETH on Scroll. The wallet must support the destination USDC native label or contract. Receipt does not automatically supply the destination network’s gas asset.

Which stablecoin contract must this route match?

DAI must match its Optimism representation. USDC must match the quoted Scroll representation. A ticker or target price is not enough to identify a token contract.

What funds the Optimism source transaction?

ETH is the native gas asset for Optimism. An OP Mainnet source uses sequenced OP Stack execution and ETH gas; ordinary route processing is not the same as the canonical L2 withdrawal delay. DAI is token-tracked and can need approval before transfer.

Can I swap DAI on OP Mainnet to USDC on Scroll without KYC?

Requirements are checked for the live DAI OP Mainnet to USDC Scroll quote. Verification requirements can depend on the provider, amount, jurisdiction, and current route. Sasquatch does not verify this route as universally no-KYC; check the live flow before continuing.

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