/// <reference types="node" />
import { FileSystem } from '../fileSystems';
export type VerifiedAssetMetadata = {
    symbol: string;
    decimals?: number;
    logoURI?: string;
    website?: string;
};
export type VerifiedAssetMetadataResponse = {
    identifier: string;
} & VerifiedAssetMetadata;
export declare class VerifiedAssets {
    private readonly assets;
    private lastModified?;
    export(): ExportedVerifiedAssets;
    static restore(options: ExportedVerifiedAssets): VerifiedAssets;
    getAssetData(assetId: Buffer | string): VerifiedAssetMetadata | undefined;
}
export type ExportedVerifiedAssets = {
    assets: VerifiedAssetMetadataResponse[];
    lastModified?: string;
};
export declare class AssetsVerificationApi {
    private readonly timeout;
    private readonly adapter?;
    readonly url: string;
    constructor(options: {
        files: FileSystem;
        url: string;
        timeout?: number;
    });
    getVerifiedAssets(): Promise<VerifiedAssets>;
    /**
     * Queries the remote API for an updated version of `verifiedAssets`.
     * @returns `true` if `verifiedAssets` has been updated; `false` otherwise,
     */
    refreshVerifiedAssets(verifiedAssets: VerifiedAssets): Promise<boolean>;
}
export declare function getDefaultAssetVerificationEndpoint(networkId?: number): string;
//# sourceMappingURL=assetsVerificationApi.d.ts.map