Since there is no official Nintendo QR code for this game, "GTA Chinatown Wars 3DS QR Codes" found on the internet typically link to a .cia file hosted on a file-sharing site (like GitHub or mediafire).
Let’s address the elephant in the room immediately: Gta Chinatown Wars 3ds Qr Code
Scan a QR code from a trusted homebrew source or a personal cloud link (like Dropbox or MediaFire) that leads directly to a Important Note: Since there is no official Nintendo QR code