import { ChainTracker, Telemetry, TelemetryConfig } from '@bsv/sdk';
import { Chain } from '../../sdk/types';
import { ChaintracksClientApi } from './chaintracks/Api/ChaintracksClientApi';
export interface ChaintracksChainTrackerOptions {
    maxRetries?: number;
    retryDelayMs?: number;
    telemetry?: TelemetryConfig;
}
export declare class ChaintracksChainTracker implements ChainTracker {
    private _chaintracks;
    private verificationContext;
    private reorgEpoch;
    private observerGeneration;
    private reorgSubscription?;
    private reorgProvider?;
    private reorgSetup?;
    private readonly cacheUpdatedAt;
    cache: Record<number, string>;
    options: ChaintracksChainTrackerOptions;
    readonly telemetry: Telemetry;
    constructor(chain?: Chain, chaintracks?: ChaintracksClientApi, options?: ChaintracksChainTrackerOptions);
    get chaintracks(): ChaintracksClientApi;
    set chaintracks(value: ChaintracksClientApi);
    /** Local provider-generation marker for consumers that invalidate derived verdicts. */
    getVerificationContext(): string;
    /** Fresh provider-bound canonical tip token; unlike the stable context, normal tip advances change it. */
    getVerificationContextToken(signal?: AbortSignal): Promise<string>;
    dispose(): Promise<void>;
    private reorgSubscribe;
    private ensureReorgListener;
    private releaseReorgListener;
    currentHeight(signal?: AbortSignal): Promise<number>;
    isValidRootForHeight(root: string, height: number, signal?: AbortSignal): Promise<boolean>;
    private isValidRootForHeightCore;
    private assertProviderUnchanged;
    private readHeaderForHeight;
    private fetchCanonicalHeader;
    private pruneDiagnosticCache;
    private throwIfAborted;
}
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