Privacy considerations for ETH to SOL
Where offered, Private Route is designed to reduce an obvious direct association between the sending wallet and received assets; it does not make ETH on Scroll or SOL on Arbitrum activity anonymous or invisible. Scroll exposes account history, token approvals, contract calls, logs, gas funding, amounts, and timing under its own chain identifier. It is a bytecode-compatible zero-knowledge EVM rollup that proves batches to Ethereum. Scroll inclusion and Ethereum proof settlement are distinct, and its token contracts must be verified independently from L1. Arbitrum exposes account history, token approvals, contract calls, logs, gas funding, amounts, and timing under its own chain identifier. Its Nitro optimistic-rollup design executes through a sequencer and posts compressed transaction data to Ethereum. L2 inclusion and Ethereum settlement are separate milestones, so a source receipt can advance before the rollup state is final on L1. ETH is native gas on Ethereum and several rollups, but each network maintains a separate ETH balance and transaction history. A contract-wrapped form is not the native gas balance. Native SOL pays Solana fees and participates in the Solana account model. Wrapped SOL is an SPL token account representation and tokenized SOL on another network is not native SOL. Token contracts, approvals, wallet reuse, recognizable amounts, close timing, and later consolidation can create association signals. Private routing changes only part of that observable transaction context. Identity-verification requirements are separate and must be checked in the live flow.
What remains visible on Scroll
Scroll exposes account history, token approvals, contract calls, logs, gas funding, amounts, and timing under its own chain identifier. It is a bytecode-compatible zero-knowledge EVM rollup that proves batches to Ethereum. Scroll inclusion and Ethereum proof settlement are distinct, and its token contracts must be verified independently from L1. ETH is the native gas asset for Scroll. Reusing the sending address, approval pattern, or recognizable amount can preserve source-side context.
What remains visible on Arbitrum
Arbitrum exposes account history, token approvals, contract calls, logs, gas funding, amounts, and timing under its own chain identifier. Its Nitro optimistic-rollup design executes through a sequencer and posts compressed transaction data to Ethereum. L2 inclusion and Ethereum settlement are separate milestones, so a source receipt can advance before the rollup state is final on L1. Receiving-address reuse, immediate consolidation, and later transfers can create destination-side associations.
Scroll source role versus Arbitrum destination role
A Scroll source executes in the zkEVM and is later included in a proof batch to Ethereum; Scroll contract identity must be verified independently. Those source-side events remain visible. 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. That receipt and later destination activity remain visible.
Scroll and Arbitrum keep separate account histories
The same-looking 0x wallet syntax does not combine the two ledgers. A Scroll source executes in the zkEVM and is later included in a proof batch to Ethereum; Scroll contract identity must be verified independently. Native ETH can fund both transfer value and gas on its selected network. If the source is WETH or another tokenized form, approval and unwrap or exchange logic differ. 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 SOL receipt uses a Solana address and can fund later fees; wrapped SOL uses an SPL token account and tokenized SOL elsewhere is not native. Rollup inclusion and settlement can also expose different timing milestones.
Native ETH gas and value evidence; SOL fee-payer and account evidence
Native ETH can expose both transfer value and gas funding on the selected network. Rollup balances, Ethereum L1 balances, and WETH contracts remain separate public records. Native ETH can fund both transfer value and gas on its selected network. If the source is WETH or another tokenized form, approval and unwrap or exchange logic differ. Those source events remain public. Native SOL balance changes, fee-payer accounts, signatures, and later token-account activity remain visible on Solana. Tokenized SOL elsewhere follows a separate contract ledger. Native SOL receipt uses a Solana address and can fund later fees; wrapped SOL uses an SPL token account and tokenized SOL elsewhere is not native. 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 Scroll source executes in the zkEVM and is later included in a proof batch to Ethereum; Scroll contract identity must be verified independently. Native ETH can fund both transfer value and gas on its selected network. If the source is WETH or another tokenized form, approval and unwrap or exchange logic differ. 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 SOL receipt uses a Solana address and can fund later fees; wrapped SOL uses an SPL token account and tokenized SOL elsewhere is not native.
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 Scroll source executes in the zkEVM and is later included in a proof batch to Ethereum; Scroll contract identity must be verified independently. Native ETH can fund both transfer value and gas on its selected network. If the source is WETH or another tokenized form, approval and unwrap or exchange logic differ. 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 SOL receipt uses a Solana address and can fund later fees; wrapped SOL uses an SPL token account and tokenized SOL elsewhere is not native.
