/**
 * CIP-14 asset fingerprint (`asset1…`) from a policy id and asset-name, both hex.
 * `fingerprint = bech32("asset", blake2b-160(policyId ++ assetName))`. Pure — safe in any runtime.
 */
export declare function assetFingerprint(policyIdHex: string, assetNameHex?: string): string;
export interface NftcdnUrlOptions {
    /** NFTCDN subdomain from your dashboard, e.g. "handles" for `*.handles.nftcdn.io`. */
    subdomain: string;
    /** Gateway secret key — base64 string (as shown in the dashboard) or raw bytes. SERVER-ONLY. */
    key: string | Uint8Array;
    /** Optimized size in px; NFTCDN accepts powers of two 32…1024. Omit for the original image. */
    width?: number;
    /** Endpoint path; defaults to "/image" ("/metadata", "/files/…" also exist). */
    path?: string;
}
/**
 * Build a signed NFTCDN URL for an already-computed fingerprint, mirroring NFTCDN's reference
 * algorithm: serialize params with an empty `tk`, HMAC-SHA256 the full URL, then set
 * `tk = base64url(mac)` (unpadded). SERVER-ONLY (needs the secret key).
 */
export declare function signNftcdnUrl(fingerprint: string, options: NftcdnUrlOptions): string;
/**
 * Convenience: a signed NFTCDN image URL straight from a policy id + asset-name (both hex).
 * Computes the CIP-14 fingerprint, then signs. SERVER-ONLY (needs the secret key).
 */
export declare function nftcdnImageUrl(policyIdHex: string, assetNameHex: string, options: NftcdnUrlOptions): string;
//# sourceMappingURL=index.d.ts.map