UD Pre-registration
Free foreverTamper-evident hypothesis registration before data collection. Lock your research protocol as a cryptographically sealed .uds file — mathematically proving it existed before you saw the data. A Centre for Open Science alternative built for research transparency and reproducibility.
Why hypothesis registration matters
Hypothesising After Results are Known is a driver of the reproducibility crisis. A sealed timestamp makes it impossible.
Journals accepting registered reports require proof the hypothesis predates data collection. Your .uds is that proof.
Preregistration is the foundation of open science. Share the sealed file with reviewers, editors, or co-authors.
Unlike OSF, your proof lives inside the document itself — verifiable by anyone, permanently, with no dependency on any service.
How UD Pre-registration differs from OSF
The Open Science Framework stores your registration in their database. UD Pre-registration seals the proof inside your document. The difference matters for long-term research integrity.
Your cryptographic timestamp is embedded in the .uds file itself — not in our database. Share the file and the proof travels with it.
The FNV-1a integrity hash can be independently verified by anyone with the file. No need to query any service or API.
OSF requires registration and login. UD Pre-registration runs entirely in your browser. We never see your data.
If the Centre for Open Science shuts down, OSF registrations become unverifiable. Your .uds timestamp is permanently self-contained.
Research preregistration and open science tools are always free on Universal Document™. No tiers, no upgrades, no expiry.