Privacy considerations for WETH to ARB
Where offered, Private Route is designed to reduce an obvious direct association between the sending wallet and received assets; it does not make WETH on Linea or ARB on Ethereum activity anonymous or invisible. Linea exposes account history, token approvals, contract calls, logs, gas funding, amounts, and timing under its own chain identifier. It is a zero-knowledge EVM rollup that batches execution and proves state to Ethereum. L2 transaction inclusion, proof completion, and Ethereum settlement are different stages, while token contracts remain specific to Linea. Ethereum exposes account history, token approvals, contract calls, logs, gas funding, amounts, and timing under its own chain identifier. It is the settlement-layer EVM network for this inventory. ERC-20 transfers can require a separate approval, base fee and priority fee affect source cost, and an L1 token contract does not establish an L2 representation. 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. ARB is a governance token and does not pay Arbitrum transaction gas; ETH remains the gas asset. A bridged ARB contract on another network is a separate representation from the Arbitrum token. Wrapped assets depend on a token contract and a separate underlying asset model. Wrapper interactions, approvals, unwrap activity, and the destination representation can remain public and may create additional association points. Identity-verification requirements are separate and must be checked in the live flow.
What remains visible on Linea
Linea exposes account history, token approvals, contract calls, logs, gas funding, amounts, and timing under its own chain identifier. It is a zero-knowledge EVM rollup that batches execution and proves state to Ethereum. L2 transaction inclusion, proof completion, and Ethereum settlement are different stages, while token contracts remain specific to Linea. ETH is the native gas asset for Linea. Reusing the sending address, approval pattern, or recognizable amount can preserve source-side context.
What remains visible on Ethereum
Ethereum exposes account history, token approvals, contract calls, logs, gas funding, amounts, and timing under its own chain identifier. It is the settlement-layer EVM network for this inventory. ERC-20 transfers can require a separate approval, base fee and priority fee affect source cost, and an L1 token contract does not establish an L2 representation. Receiving-address reuse, immediate consolidation, and later transfers can create destination-side associations.
Linea source role versus Ethereum destination role
A Linea source is executed on the zkEVM rollup and later proven to Ethereum; L2 inclusion and proof settlement are distinct source milestones. Those source-side events remain visible. An Ethereum receipt is an L1 native ETH balance or ERC-20 contract event; later token movement can require ETH gas and a new approval for another contract. That receipt and later destination activity remain visible.
Linea and Ethereum keep separate account histories
The same-looking 0x wallet syntax does not combine the two ledgers. A Linea source is executed on the zkEVM rollup and later proven to Ethereum; L2 inclusion and proof settlement are distinct source milestones. 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 Ethereum receipt is an L1 native ETH balance or ERC-20 contract event; later token movement can require ETH gas and a new approval for another contract. A receiving wallet should show the exact ARB contract on the destination. Receipt does not fund ETH gas for later token movement. Rollup inclusion and settlement can also expose different timing milestones.
Wrapper activity can add another association point
Wrapped-token approvals, transfers, and later unwrap activity are public contract events. 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 receiving wallet should show the exact ARB contract on the destination. Receipt does not fund ETH gas for later token movement.
WETH wrapper and unwrap evidence; ARB approval and governance-token evidence
WETH approvals, wrapper transfers, and later unwrap activity remain visible contract events. A private route does not turn WETH into an unrecorded native ETH balance. 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. Those source events remain public. Token allowances, contract transfers, voting or utility interactions, source gas, and later wallet consolidation can remain visible for this receipt. A receiving wallet should show the exact ARB contract on the destination. Receipt does not fund ETH gas for later token movement. The receipt and later destination use remain public.
What Private Route changes—and what it does not
Private routing can reduce an obvious link between two EVM accounts, but source approvals, gas, logs, destination contract or native receipt, and later activity remain on separate chain histories. Sequencer and settlement timing can add correlation evidence. A Linea source is executed on the zkEVM rollup and later proven to Ethereum; L2 inclusion and proof settlement are distinct source milestones. 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 Ethereum receipt is an L1 native ETH balance or ERC-20 contract event; later token movement can require ETH gas and a new approval for another contract. A receiving wallet should show the exact ARB contract on the destination. Receipt does not fund ETH gas for later token movement.
Verification and provider policy for this exact route
The provider must support the exact L2 direction, asset contracts, amount, and region. Rollup support and privacy routing do not imply that identity verification, account, or custody requirements are absent. A Linea source is executed on the zkEVM rollup and later proven to Ethereum; L2 inclusion and proof settlement are distinct source milestones. 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 Ethereum receipt is an L1 native ETH balance or ERC-20 contract event; later token movement can require ETH gas and a new approval for another contract. A receiving wallet should show the exact ARB contract on the destination. Receipt does not fund ETH gas for later token movement.
