/**
 * Check if a string is a valid Solana base58 address (including PDAs).
 * Returns `false` for EVM hex addresses.
 */
export declare function isSolanaAddress(address: string): boolean;
/**
 * Check if a string is a valid Stellar address.
 * Muxed accounts (M prefix, per SEP-0023) are intentionally excluded — they are
 * not valid vault or contract addresses.
 */
export declare function isStellarAddress(address: string): boolean;
/** Check if a string is a valid Sui address (0x + 64 hex chars). */
export declare function isSuiAddress(address: string): boolean;