export type VerifyStatus = "VALID" | "UNVERIFIED" | "UNTRUSTED" | "TAMPERED" | "MALFORMED";
export interface VerifyOptions {
    keyring?: Uint8Array | string;
    checkpoint?: Uint8Array | string;
    maxReceipts?: number;
    identityManifest?: Uint8Array | string;
    requireTenantConsistency?: boolean;
    requireNFC?: boolean;
}
export interface VerifyResult {
    status: VerifyStatus;
    chain: string | null;
    count: number;
    signaturesVerified: boolean;
    tailChecked: boolean;
    badSeq?: number;
    reason?: string;
    warnings: string[];
}
export declare const DEFAULT_MAX_RECEIPTS = 1000000;
export declare function verifyChain(receipts: Uint8Array | string, opts?: VerifyOptions): VerifyResult;
export declare function verifyChainText(text: string, opts?: VerifyOptions): VerifyResult;
type CheckpointVerdict = "ok" | "unverified" | "retired signing key" | "bad spec" | "malformed checkpoint" | "bad checkpoint signature";
export declare function verifyCheckpoint(cp: Uint8Array | string, keyring?: Uint8Array | string): CheckpointVerdict;
export {};