Receiving Funds
Safebox Web provides one Receive Funds page. Lightning requests receive cash payments. The Clear method requests transfers of a particular CMU without presenting those credits as cash.
Lightning today
A registered Lightning address also provides an asynchronous receipt path. The provider receives and delivers using its own service Acorn while the recipient is offline. This is separate from creating an invoice directly for a connected Acorn below.
The current method asks the Acorn home mint for a Lightning invoice. Safebox presents the invoice as QR and text, then waits for the user to indicate that the payment has been completed before asking Acorn to finalize it.
The browser does not poll the mint or hold application wallet state.
Clear transfers
The same page can request a transfer from a supported Clear Mint
Unit. The request uses Cashu NUT-18 with the exact
cmu-<keyset-id> and a strict accepted-mint list.
The transfer remains pending until the received proofs have been validated and refreshed. Lightning cash payments and Clear transfers can share an entry point without implying that they are the same kind of value or transaction.
The sender delivers an encrypted transfer to the recipient relay. The recipient can be offline, then retrieve and accept it later through a background job. Acceptance errors retain a review state, and retries use Acorn's recovery logic. The web application does not independently retry mint swaps.