Swap WETH on Solana to BNB on Arbitrum

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What you need to know

Move from a Solana account into Arbitrum EVM

Solana uses Solana accounts and SOL for source fees, while Arbitrum uses an EVM 0x account and ETH for destination gas. Confirm the destination token contract and do not paste a Solana address into the EVM destination field. WETH is read from its Solana mint or native account, while BNB arrives at the quoted Arbitrum native or contract representation.

WETH mint and SOL fee checks

Base58-encoded Solana account address SOL is the native gas asset for Solana. A Solana source signs over accounts or token accounts, identifies SPL assets by mint, and spends SOL for transaction fees. WETH leaves through a wrapper contract and needs native chain gas. A WETH token balance cannot pay the gas required to submit its own transfer. The mint/account selected by the quote must match the source wallet balance.

Arbitrum contract and 0x receiving checks

EVM 0x account address ETH is the native gas asset for Arbitrum. An Arbitrum receipt appears on the Nitro L2 ledger under an Arbitrum token contract or native ETH balance; later spending needs Arbitrum ETH while L1 settlement continues separately. Native BSC receipt can fund BNB gas, while externally bridged BNB arrives as a representation that needs the destination chain’s gas token. A Solana address cannot receive this EVM-side output.

WETH unwrap or exchange input check

WETH is a contract wrapper for ETH. It can be transferred as a token but cannot replace the native gas balance required by the network. On this route WETH is the source token on Solana. Its token balance, approvals, and contract transfer behavior are separate from the native coin used for network gas.

Mistakes specific to WETH Solana to BNB Arbitrum

Route-specific mistakes include sending on a network other than Solana; using a destination that is not valid for Arbitrum; running out of SOL before the source transaction is submitted; assuming solana and evm addresses are interchangeable; treating a wrapped token as the native gas asset. A Solana source signs over accounts or token accounts, identifies SPL assets by mint, and spends SOL for transaction fees. WETH leaves through a wrapper contract and needs native chain gas. A WETH token balance cannot pay the gas required to submit its own transfer. An Arbitrum receipt appears on the Nitro L2 ledger under an Arbitrum token contract or native ETH balance; later spending needs Arbitrum ETH while L1 settlement continues separately. Native BSC receipt can fund BNB gas, while externally bridged BNB arrives as a representation that needs the destination chain’s gas token.

WETH input identity and handling

WETH is classified as a wrapped asset for this route. WETH uses a wrapped contract asset on Solana. The recorded Solana representation uses 9 decimal places. WETH leaves through a wrapper contract and needs native chain gas. A WETH token balance cannot pay the gas required to submit its own transfer.

BNB output identity and receiving

BNB is classified as a native asset for this route. BNB uses a network-specific contract asset on Arbitrum. The recorded Arbitrum representation uses 18 decimal places. Native BSC receipt can fund BNB gas, while externally bridged BNB arrives as a representation that needs the destination chain’s gas token.

Private Route for WETH → BNB

Solana account, token, program, signature, and fee activity remain public, and Arbitrum wallet, token-transfer, contract, log, and gas activity remain public. For this WETH on Solana to BNB on Arbitrum path, Private Route is intended to reduce the direct visible relationship between activity around the source-side Base58-encoded Solana account address and destination-side EVM 0x account address; it does not hide either chain's public records.

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

Related routes

Swap WETH on Solana to BNB on Arbitrum FAQs

Can a Solana address be used for the Arbitrum output?

No. EVM 0x account address The BNB output belongs to the quoted EVM representation.

What pays gas on each side of this Solana-to-EVM route?

SOL pays source fees on Solana. ETH pays later transactions on Arbitrum; the delivered BNB does not replace that gas balance unless it is the native asset.

What exactly leaves Solana as WETH?

WETH is a contract representation on Solana with 9 decimals at AaAEw2VCw1XzgvKB8Rj2DyK2ZVau9fbt2bE8hZFWsMyE. SOL, not WETH, pays gas unless both symbols are the same. A Solana source signs over accounts or token accounts, identifies SPL assets by mint, and spends SOL for transaction fees. WETH leaves through a wrapper contract and needs native chain gas. A WETH token balance cannot pay the gas required to submit its own transfer.

What exactly arrives on Arbitrum as BNB?

BNB is a contract representation on Arbitrum with 18 decimals at 0x20865e63B111B2649ef829EC220536c82C58ad7B. ETH, not BNB, pays gas unless both symbols are the same. An Arbitrum receipt appears on the Nitro L2 ledger under an Arbitrum token contract or native ETH balance; later spending needs Arbitrum ETH while L1 settlement continues separately. Native BSC receipt can fund BNB gas, while externally bridged BNB arrives as a representation that needs the destination chain’s gas token.

Why does the WETH to BNB direction matter?

WETH leaves through a wrapper contract and needs native chain gas. A WETH token balance cannot pay the gas required to submit its own transfer. On receipt, Native BSC receipt can fund BNB gas, while externally bridged BNB arrives as a representation that needs the destination chain’s gas token.

What changes between the source and destination asset roles?

WETH is the deposited token input; BNB 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 WETH?

WETH leaves through a wrapper contract and needs native chain gas. A WETH token balance cannot pay the gas required to submit its own transfer. A Solana source signs over accounts or token accounts, identifies SPL assets by mint, and spends SOL for transaction fees. An Arbitrum receipt appears on the Nitro L2 ledger under an Arbitrum token contract or native ETH balance; later spending needs Arbitrum ETH while L1 settlement continues separately. Native BSC receipt can fund BNB gas, while externally bridged BNB arrives as a representation that needs the destination chain’s gas token.

Can I swap WETH on Solana to BNB on Arbitrum without KYC?

Requirements are checked for the live WETH Solana to BNB Arbitrum 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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