import { stableStringify } from "../sdk/json/index.js";
export { stableStringify };
/** SHA-256 hex digest of a stable-serialized value. */
export declare function sha256(obj: unknown): string;
/** Canonical event content used for eventHash computation.
 *  Excludes the eventHash field itself; includes previousHash so the
 *  chain is cryptographic.
 */
export declare function eventContentForHash(event: {
    id: string;
    type: string;
    timestamp: number;
    transactionId: string;
    capability: string;
    actor: string;
    payload: unknown;
    previousHash: string;
}): Record<string, unknown>;
/** Compute the event hash for a canonical event. */
export declare function computeEventHash(event: {
    id: string;
    type: string;
    timestamp: number;
    transactionId: string;
    capability: string;
    actor: string;
    payload: unknown;
    previousHash: string;
}): string;