export declare class AssignmentCheckerService {
    private blockchainService;
    private assignedCids;
    constructor(rpcUrl: string, contractAddress: string);
    /**
     * Fetch and cache all assigned CIDs for a specific elephant address
     */
    fetchAssignedCids(elephantAddress: string, fromBlock?: number, toBlock?: number | 'latest'): Promise<Set<string>>;
    /**
     * Check if a specific CID is assigned to the elephant
     */
    isCidAssigned(cid: string): boolean;
    /**
     * Get all assigned CIDs
     */
    getAssignedCids(): Set<string>;
    /**
     * Get count of assigned CIDs
     */
    getAssignedCidsCount(): number;
}
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