export type Bip375ValidationStage = "psbt structure" | "ecdh coverage" | "input eligibility" | "output scripts";
export type Bip375FailureClass = "silent_payment.invalid_dleq" | "silent_payment.missing_dleq" | "silent_payment.incomplete_coverage" | "silent_payment.sighash_not_allowed" | "silent_payment.output_script_mismatch" | "silent_payment.output_order_mismatch" | "silent_payment.invalid_psbt";
export type Bip375ValidationResult = {
    readonly valid: true;
} | {
    readonly valid: false;
    readonly stage: Bip375ValidationStage;
    readonly message: string;
    readonly failureClass: Bip375FailureClass;
};
export type ClassifiedBip375ValidationResult = {
    readonly valid: true;
} | (Extract<Bip375ValidationResult, {
    valid: false;
}> & {
    readonly class: Bip375FailureClass;
});
export declare function validateBip375ReferencePsbt(encoded: string): Bip375ValidationResult;
export declare function classifyBip375ReferencePsbt(encoded: string): ClassifiedBip375ValidationResult;
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