type Event = {
    seq: number;
    type: string;
    time?: unknown;
    data?: unknown;
};
export type ContentProof = {
    version: 1;
    messages: Record<string, number>;
    sequence: string[];
};
export declare function contentMessageKey(event: Event): string | undefined;
export declare function parseContentProof(value: unknown): ContentProof;
export declare const contentCovers: (complete: ContentProof, source: ContentProof) => boolean;
/** Public persistence handles provide bounded, cancellable reads. The DSH
 * owner performs format conversion/validation; plugin code never reads files. */
export declare function readLocalContentProof(persistence: unknown, session: string, through: number, signal: AbortSignal): Promise<ContentProof>;
export {};
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