import type { MarketsResponse } from '../../Client';
import type { TTLCache } from '../../utils/TTLCache';
import { NetworkDescriptor } from './NetworkDescriptor';
import type { NetworkInfoInternal, UtxoNetworkParams, BchAddressType } from './types';
/** A {@link NetworkDescriptor} for Bitcoin Cash specifically. */
export declare class BchNetworkDescriptor extends NetworkDescriptor<BchAddressType> {
    readonly id: 'bitcoincash';
    readonly networkParams: UtxoNetworkParams;
    /** @internal */
    constructor(info: NetworkInfoInternal, marketsCache: TTLCache<MarketsResponse>, apiKey?: string);
    /**
     * Derives a Bitcoin Cash address from a compressed public key.
     *
     * @param publicKey - Compressed (33-byte) secp256k1 public key.
     * @param addressType - `'cashaddr'` or `'legacy'`. Defaults to the network's
     *   {@link defaultAddressType} (`'cashaddr'`).
     */
    publicKeyToAddress(publicKey: Uint8Array, addressType?: BchAddressType): string;
    /**
     * Checks whether a string is a valid Bitcoin Cash address.
     *
     * Accepts both CashAddr (e.g. `bitcoincash:qq...`) and legacy Base58Check formats.
     *
     * @param address - The address string to validate.
     * @returns `true` if the address is valid.
     */
    isValidAddress(address: string): boolean;
    /**
     * Signs a message using the Bitcoin Cash message signing standard.
     *
     * @param message - The message to sign (string or raw bytes).
     * @param privateKey - The 32-byte secp256k1 private key.
     * @returns The signature as a base64 string (65 bytes).
     */
    signMessage(message: string | Uint8Array, privateKey: Uint8Array): string;
    /**
     * Verifies a Bitcoin Cash signed message by recovering the public key and
     * comparing the derived address against the expected address.
     *
     * @param message - The original message.
     * @param signature - The base64-encoded signature (65 bytes).
     * @param address - The expected signer address (CashAddr or legacy format).
     * @returns `true` if the signature is valid.
     */
    verifyMessage(message: string, signature: string, address: string): boolean;
}