Channel DRM & Restrict Saving Content: Copy Protection, Watermarking & Screenshot Shielding Architecture

How to Enable Restrict Saving Content in Channel Settings

1. Open your Channel on Telegram Desktop or Mobile → Tap Edit (Channel Settings).
2. Select Channel Type (Public or Private).
3. Scroll to the bottom of the screen → toggle on Restrict saving content.
4. Tap Save. The change takes effect instantaneously across all subscribers. All previously published messages and future broadcasts immediately become protected from forwarding and copying!

from telegram import Bot

BOT_TOKEN = "7129841203:AAH_PRODUCTION_TOKEN"
VIP_CHANNEL_ID = -1001987654321

bot = Bot(token=BOT_TOKEN)

async def dispatch_drm_protected_alpha(chart_path: str, analysis_text: str):
    """
    Dispatches proprietary research with hardware DRM locks.
    protect_content=True blocks forwarding, saving, and copy/paste.
    """
    with open(chart_path, "rb") as photo_file:
        await bot.send_photo(
            chat_id=VIP_CHANNEL_ID,
            photo=photo_file,
            caption=analysis_text,
            protect_content=True,  # CRUCIAL: Hardware DRM lock
            parse_mode="HTML"
        )
    print("[SECURITY] DRM Protected message published successfully.")

from PIL import Image, ImageDraw, ImageFont

def render_forensic_watermark(base_image: Image.Image, subscriber_id: int) -> Image.Image:
    """
    Applies a semi-transparent diagonal watermark containing the user's unique
    Telegram user_id across the image canvas. If the user snaps a photo of their screen
    with an external camera, the leak can be traced directly to their account!
    """
    img_rgba = base_image.convert("RGBA")
    txt_layer = Image.new("RGBA", img_rgba.size, (255, 255, 255, 0))
    d = ImageDraw.Draw(txt_layer)
    font = ImageFont.truetype("arial.ttf", 22)

    tag = f"LICENSED TO TG-UID #{subscriber_id} • PROPRIETARY ALPHA • DO NOT LEAK"
    
    # Render diagonal repeating stamps across the canvas
    w, h = img_rgba.size
    for y in range(80, h, 200):
        for x in range(40, w, 400):
            # Alpha 32/255 = ~12% opacity (subtle, non-disruptive, highly forensic)
            d.text((x, y), tag, fill=(255, 255, 255, 32), font=font)

    return Image.alpha_composite(img_rgba, txt_layer)

Frequently Asked Technical Questions (FAQ)