EmbeddedOfframpPayer - Crossmint Docs

Structure Signs for the offramp with your wallet: the deposit, and the wallet ownership proof when your wallet can sign messages.

struct EmbeddedOfframpPayer

Keep CrossmintEmbeddedOfframp on screen while the payer runs. Once the view is gone, the page never gets the reply.

Initializers

init(signAndSendTransaction:signMessage:)

Creates a payer.

init(signAndSendTransaction: @escaping @MainActor (OfframpTransaction) async throws -> String, signMessage: (@MainActor (OfframpMessage) async throws -> String)? = nil)

Parameters

Parameter	Description
`signAndSendTransaction`	Signs and broadcasts the transaction for `payerAddress` on `chain`, unchanged, then returns the on-chain transaction hash, or the signature on Solana. Refuse when your wallet is not that payer. Throw `OfframpSignatureRejectedError` only when the user declined.
`signMessage`	Signs `message` as `payerAddress` on `chain` and returns the signature: the EIP-191 `personal_sign` hex string, 0x-prefixed, on EVM chains, or the base64 (not base58) encoding of the 64-byte ed25519 signature over the UTF-8 message on Solana. The offramp asks only when the user must prove that they own the wallet. Refuse when your wallet is not that payer. Throw `OfframpSignatureRejectedError` only when the user declined. Without it, a user who needs the proof is told to verify the wallet in your app first. Adding or removing it reloads the offramp.