If your integration must deliver BTC, ETH or SOL to a user, accept a destination only when its wallet can control the native asset on that chain. For the cross-chain swap leg, Chainflip handles native-asset swaps; your integration still needs to validate the destination against the chain’s receive model. A wallet label such as “hardware,” “exchange” or “smart wallet” is not enough to establish compatibility.
What makes a wallet able to receive a native payout?
A receiving wallet needs an address that the source chain can pay and a signing or custody path that can later spend the resulting asset. “Wallet type” describes who or what controls that path; the payout transaction generally targets a chain-specific address or script, not the wallet application itself.
For an integrator, the decisive distinction is address control and spendability. A self-custody wallet gives the user keys or a signing device; a custodial account assigns control to a provider; a smart wallet delegates execution to code. All can receive in some contexts, but each has different recovery, policy and withdrawal dependencies.
Think of the destination like a delivery address plus a lock: the network can deliver funds if the address is valid, but only the intended controller can open that lock later. A successful on-chain transfer proves delivery to the address; it does not prove that a particular person, app or exchange account can access it.
Which wallet types work for BTC, ETH and SOL?
For BTC, most self-custody wallets and custodians receive to a Bitcoin output type they support, commonly P2WPKH or P2TR, with legacy P2PKH and nested SegWit P2SH-P2WPKH still present. Bitcoin Core’s output descriptor reference is useful here: it describes the output script, rather than treating an address as a generic account identifier. Your validator should check network and encoding, then ensure the payout system supports the decoded script type.
For ETH, both externally owned accounts (EOAs) and contract accounts can hold native ETH. An EOA is controlled by a private key; a contract address is controlled by code, so receiving value may execute contract logic. The Ethereum documentation describes the to field distinction: a transfer to an EOA credits value, while a transaction to a contract can execute its code. A contract can therefore reject, consume or route a payment in ways an EOA cannot.
For SOL, distinguish a System Program wallet from a program-derived address (PDA). Solana’s address verification guidance notes that a PDA has no corresponding private key and can be signed for only by its deriving program; it also warns that native SOL has stricter recipient requirements than some token flows. Check the account’s owner and type through RPC, not only whether the base58 string decodes.
How should an integrator validate a destination?
Validation should be chain-specific and should happen before you commit a payout. Parse the address with the relevant chain library, reject the wrong network or malformed checksum, and apply destination-type rules for the exact asset and transaction path. An address that is syntactically valid can still be the wrong network, an unsupported script, a token account instead of a native-asset recipient, or a contract with incompatible behavior.
For a worked example, suppose a user supplies an Ethereum contract address for an ETH payout. Confirm that the address is intended to receive plain ETH and inspect its code or published interface where feasible; do not assume that any ERC-20 deposit support implies native ETH support. If the user supplies a Solana address, query account data and program ownership, then confirm the destination is valid for native SOL rather than relying on a successful base58 parse.
Store the canonical destination, chain identifier and asset together, and bind user confirmation to that tuple. For Bitcoin, retain the address type or decoded script information; for account chains, preserve the exact network and account address. This prevents later code from silently reinterpreting a string under another chain’s rules.
What failures should the payout flow handle?
Plan for a payout to be rejected, delayed or delivered to an address the user cannot spend from. Bitcoin payouts can fail validation when the destination uses an unsupported script type or wrong network prefix; account-chain payouts can be irreversible even when a contract address does not behave as expected. For a cross-chain route involving Chainflip, also separate swap completion from destination usability: settlement to an address is not evidence that its controller can withdraw.
Use an explicit state model: destination accepted, payout submitted, chain transaction observed, and payout sufficiently confirmed. On Ethereum, distinguish receipt status from finality; the official JSON-RPC reference exposes receipt status, while the chain’s finalized tag represents a later confidence threshold. Choose confirmation policy based on value and reorg tolerance, and keep the transaction hash for reconciliation.
Before production, test representative wallet classes on each chain: a standard self-custody address, a custodial deposit address, and a contract or program-controlled destination where the payout path permits it. Include wrong-network inputs, unsupported address encodings, and valid addresses with no intended spend path. These tests reveal integration assumptions that string-level validation cannot catch.
Can an exchange deposit address receive a native payout?
Often, but the address is controlled by the exchange and may be specific to the asset, network or account. Confirm that the provider accepts that native asset on the exact chain and that any required account memo or tag is handled by the payout system. A valid chain address alone does not associate funds with the user’s exchange account.
Can a smart contract wallet receive native assets?
It depends on the chain and contract behavior. An EVM contract can hold ETH, but code may run when value arrives and can revert or enforce conditions. A Solana PDA cannot sign independently; its owning program controls actions. Treat each smart wallet as a contract-specific integration case, not as interchangeable with a key-controlled address.
Should the app verify ownership before paying?
For self-custody addresses, a signed challenge can demonstrate control when the chain’s signing format and wallet support it. That check does not establish future availability, and custodial services may not be able to sign for deposit addresses. Use it as one signal alongside chain, asset and destination-type validation, not as a substitute for them.