import { Buffer } from 'node:buffer';
declare const PSBT_base: import("@ngraveio/bc-ur").RegistryItemClass<import("@ngraveio/bc-ur").RegistryItemBase>;
/**
 * Partially Signed Bitcoin Transaction (PSBT)
 *
 * Definition: https://github.com/BlockchainCommons/Research/blob/master/papers/bcr-2020-006-urtypes.md#partially-signed-bitcoin-transaction-psbt-psbt
 */
export declare class PSBT extends PSBT_base {
    psbt: Uint8Array;
    constructor(psbt: Buffer | Uint8Array);
    getPSBT: () => Uint8Array<ArrayBufferLike>;
    verifyInput(input: any): {
        valid: boolean;
        reasons?: Error[];
    };
}
export {};