When a user wants to move participate in a batch swap that settles on Bitcoin for finality they do so via handing an intent to the operator using the intent system who then validates the transaction declaration and, if valid, includes the users intent in the next commitment transaction. Technically, Arkade intents are valid-but-unmineable Bitcoin transactions that encode an ownership proof of the inputs (via BIP322) a user wants to redeem - whether it’s offchain VTXOs, an onchain UTXO or expired coins - and define the outputs they wish to receive. Intents separate control from coordination: users retain control of their keys while the operator coordinates the batch settlement and the Arkade Signer cosigns. If desired, a user can also hand an intent to a third-party delegate, for example to renew a VTXO before expiry.
If a user choses to delegate VTXO renewal and circumvent the corresponding liveness requirement, they never give up keys or fund control in the process, preserving autonomy while reducing operational overhead.