export default class EcdsaSecp256k1Signature2019 extends CustomLinkedDataSignature {
    static signerFactory(keypair: any, verificationMethod: any): object;
    constructor({ keypair, verificationMethod, verifier, signer, useProofValue }?: object);
    requiredKeyType: string;
}
import CustomLinkedDataSignature from "./common/CustomLinkedDataSignature";