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IPaymentVerifier

Overview​

The IPaymentVerifier interface contract verifies off-chain payment proofs. This enables on-chain actions (such as releasing escrowed funds) once a valid proof that a payment occurred is provided. Verifiers can be added to the Escrow which unlock new payment platforms and currencies that users can transact with

Structs​

struct VerifyPaymentData {
        bytes paymentProof;                     // Payment proof
        address depositToken;                   // Address of deposit token
        uint256 amount;                         // Amount of deposit token
        uint256 timestamp;                      // Timestamp of payment
        string payeeDetails;                    // Payee details
        bytes32 fiatCurrency;                   // Fiat currency
        uint256 conversionRate;                 // Conversion rate of deposit token to fiat currency
        bytes data;                             // Additional data
}

Additional data may include mail server key hash if using zkEmail, notary public key for TLSNotary or witness proxy for TLSProxy (Reclaim)

External Functions​

verifyPayment​

function verifyPayment(
    IPaymentVerifier.VerifyPaymentData calldata _verifyPaymentData
)
    external
    override
    returns (bool, bytes32)

Description: Override function that must be implemented when adding a new Verifier. The escrow contract calls this method to confirm that a payment was indeed made according to the provided proof. If successful:

  • The payment is nullified (cannot be claimed again).

  • Returns a boolean indicating success and the intentHash.