export interface IAuthentication {
    /**
     * Your private key as a market maker
     */
    privateKey: string;
    /**
     * Chain id
     */
    chainId: number;
}
export declare const YIELD_ENDPOINT = "/yield";
export declare function getAuthenticationString(privateKey: string, options: {
    chainId: number;
    issuedAt?: string;
}): Promise<string>;