[rtkwe]

> No, it's the same pattern as software CD-Keys and that's been working fine at scale for decades. [Truncate for brevity]

It's similar except you're not tracking one product with a few hundreds of thousands to a million or so at the largest scale to tracking many products with billions of copies sold. Just taking vitamins/nutritional supplements for example, last year that market sold 36.1 billion dollars in the US alone so ROM that's 1-3 billion codes to track. That gets whittled down pretty quickly by people who don't use the service but it's still a lot when you start adding other industries too.

[FooHentai]

The variety of products shouldn't matter though - You only need to know unique code and number of times redeemed. There is no need to track it back to an individual product.

For example, if you ship the unique codes with your products via a small card in the packaging, or a small product-neutral sticker applied to the outside, the end result is the same.

I hear you on the volume problem but I'm not sure it's a significant issue. A key/value store meets the need and will scale to billions while remaining space and compute efficient.