Swap WBTC on Arbitrum to SUI on Sui

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What you need to know

Arbitrum to Sui: object and account boundary

On an Arbitrum source, the Nitro sequencer records L2 execution before Ethereum settlement completes; ETH funds gas and ERC-20 inputs can need approval. A Sui receipt creates or updates Move coin objects at a Sui address; later object operations require SUI gas rather than an EVM allowance. Arbitrum and Sui use different network identities, gas assets, wallet support, confirmation behavior, and destination conventions. Validate each side independently in the current route.

Sui coin-object and SUI gas requirements

SUI is the native gas asset for Sui. Sui hexadecimal account address with an object-based asset model Coin objects and Move types are not EVM token contracts.

WBTC input versus SUI output representation

WBTC leaves through a custodial wrapper contract with token approval and source-chain gas; no native Bitcoin UTXO is spent by that transfer. Native SUI receipt creates Sui coin objects that can fund later gas. A smart-contract token outside Sui does not become a native object.

WBTC unwrap or exchange input check

WBTC is a custodial tokenized Bitcoin representation on smart-contract networks. Its transfers use token contracts and approvals rather than native Bitcoin inputs and outputs. On this route WBTC is the source token on Arbitrum. Its token balance, approvals, and contract transfer behavior are separate from the native coin used for network gas.

Mistakes specific to WBTC Arbitrum to SUI Sui

Route-specific mistakes include sending on a network other than Arbitrum; using a destination that is not valid for Sui; running out of ETH before the source transaction is submitted; assuming evm and other addresses are interchangeable; treating a wrapped token as the native gas asset. On an Arbitrum source, the Nitro sequencer records L2 execution before Ethereum settlement completes; ETH funds gas and ERC-20 inputs can need approval. WBTC leaves through a custodial wrapper contract with token approval and source-chain gas; no native Bitcoin UTXO is spent by that transfer. A Sui receipt creates or updates Move coin objects at a Sui address; later object operations require SUI gas rather than an EVM allowance. Native SUI receipt creates Sui coin objects that can fund later gas. A smart-contract token outside Sui does not become a native object.

WBTC input identity and handling

Wrapped Bitcoin is classified as a wrapped asset for this route. WBTC uses a wrapped contract asset on Arbitrum. The recorded Arbitrum representation uses 8 decimal places. WBTC leaves through a custodial wrapper contract with token approval and source-chain gas; no native Bitcoin UTXO is spent by that transfer.

SUI output identity and receiving

Sui is classified as a native asset for this route. SUI uses a native asset on Sui. The Sui side is contract-tracked rather than a native gas balance. Native SUI receipt creates Sui coin objects that can fund later gas. A smart-contract token outside Sui does not become a native object.

Private Route for WBTC → SUI

Arbitrum wallet, token-transfer, contract, log, and gas activity remain public, and Sui account, object, transaction-effect, and fee activity remain public. For this WBTC on Arbitrum to SUI on Sui path, Private Route is intended to reduce the direct visible relationship between activity around the source-side EVM 0x account address and destination-side Sui hexadecimal account address with an object-based asset model; it does not hide either chain's public records.

  • Reduces the obvious link between the WBTC deposit and SUI receipt
  • Compare standard and Private Route options for Arbitrum → Sui
  • Shows what remains public on Arbitrum and Sui before you deposit
Check Private Route availability →

Related routes

Swap WBTC on Arbitrum to SUI on Sui FAQs

How does the Sui coin-object side differ from the other network?

Sui uses Move coin types and objects with SUI gas. The other side follows EVM execution, so addresses and token identifiers are not interchangeable.

What exactly leaves Arbitrum as WBTC?

WBTC is a contract representation on Arbitrum with 8 decimals at 0x2f2a2543B76A4166549F7aaB2e75Bef0aefC5B0f. ETH, not WBTC, pays gas unless both symbols are the same. On an Arbitrum source, the Nitro sequencer records L2 execution before Ethereum settlement completes; ETH funds gas and ERC-20 inputs can need approval. WBTC leaves through a custodial wrapper contract with token approval and source-chain gas; no native Bitcoin UTXO is spent by that transfer.

What exactly arrives on Sui as SUI?

SUI is listed as the native representation on Sui; SUI is used for network gas. A Sui receipt creates or updates Move coin objects at a Sui address; later object operations require SUI gas rather than an EVM allowance. Native SUI receipt creates Sui coin objects that can fund later gas. A smart-contract token outside Sui does not become a native object.

Why does the WBTC to SUI direction matter?

WBTC leaves through a custodial wrapper contract with token approval and source-chain gas; no native Bitcoin UTXO is spent by that transfer. On receipt, Native SUI receipt creates Sui coin objects that can fund later gas. A smart-contract token outside Sui does not become a native object.

What changes between the source and destination asset roles?

WBTC is the deposited wrapped-asset input; SUI is the quoted native-asset output. Source allowance or native-spend rules and destination wallet/representation checks are evaluated separately.

What should be matched before sending WBTC?

WBTC leaves through a custodial wrapper contract with token approval and source-chain gas; no native Bitcoin UTXO is spent by that transfer. On an Arbitrum source, the Nitro sequencer records L2 execution before Ethereum settlement completes; ETH funds gas and ERC-20 inputs can need approval. A Sui receipt creates or updates Move coin objects at a Sui address; later object operations require SUI gas rather than an EVM allowance. Native SUI receipt creates Sui coin objects that can fund later gas. A smart-contract token outside Sui does not become a native object.

Can the wrapped asset pay native network gas?

No. WBTC leaves through a custodial wrapper contract with token approval and source-chain gas; no native Bitcoin UTXO is spent by that transfer. On an Arbitrum source, the Nitro sequencer records L2 execution before Ethereum settlement completes; ETH funds gas and ERC-20 inputs can need approval. A Sui receipt creates or updates Move coin objects at a Sui address; later object operations require SUI gas rather than an EVM allowance.

Can I swap WBTC on Arbitrum to SUI on Sui without KYC?

Requirements are checked for the live WBTC Arbitrum to SUI Sui 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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