We recently published our paper on the first properly ACID-capable, scalable SQL solution we know of. We have worked on it for years, but we are happy with it now.

We'll give you a 1 000 € if you can disprove our paper's claims. That is, you can show that a theoretical element supporting our claim of being a scalable database with SQL-compatible consistency guarantees or the proposed combination of these elements have a fundamental flaw in it.