What exactly leaves Scroll as USDT?
USDT is a contract representation on Scroll with 6 decimals at 0xf55BEC9cafDbE8730f096Aa55dad6D22d44099Df. ETH, not USDT, pays gas unless both symbols are the same. A Scroll source executes in the zkEVM and is later included in a proof batch to Ethereum; Scroll contract identity must be verified independently. The input must match the selected ERC-20, TRC-20, SPL, or other USDT representation; each standard has different address, approval, and fee behavior.
What exactly arrives on Optimism as OP?
OP is a contract representation on Optimism at 0x4200000000000000000000000000000000000042. ETH, not OP, pays gas unless both symbols are the same. An OP Mainnet receipt belongs to the OP Stack L2 and needs ETH on that network for later activity; it is not an Ethereum L1 balance. OP receipt is a governance-token balance, not destination gas. Verify the destination contract and keep ETH available for OP Mainnet activity.
Why does the USDT to OP direction matter?
The input must match the selected ERC-20, TRC-20, SPL, or other USDT representation; each standard has different address, approval, and fee behavior. On receipt, OP receipt is a governance-token balance, not destination gas. Verify the destination contract and keep ETH available for OP Mainnet activity.
What changes between the source and destination asset roles?
USDT is the deposited stablecoin input; OP is the quoted token output. Source allowance or native-spend rules and destination wallet/representation checks are evaluated separately.
What should be matched before sending USDT?
The input must match the selected ERC-20, TRC-20, SPL, or other USDT representation; each standard has different address, approval, and fee behavior. A Scroll source executes in the zkEVM and is later included in a proof batch to Ethereum; Scroll contract identity must be verified independently. An OP Mainnet receipt belongs to the OP Stack L2 and needs ETH on that network for later activity; it is not an Ethereum L1 balance. OP receipt is a governance-token balance, not destination gas. Verify the destination contract and keep ETH available for OP Mainnet activity.
Which stablecoin contract must this route match?
USDT must match its Scroll representation. A ticker or target price is not enough to identify a token contract.
What funds the Scroll source transaction?
ETH is the native gas asset for Scroll. A Scroll source executes in the zkEVM and is later included in a proof batch to Ethereum; Scroll contract identity must be verified independently. USDT is token-tracked and can need approval before transfer.
Can I swap USDT on Scroll to OP on OP Mainnet without KYC?
Requirements are checked for the live USDT Scroll to OP OP Mainnet 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.