It is a standardized pre-registration that requires only what's necessary to separate exploratory from confirmatory analyses.
You will easily generate a pre-registration document that takes less effort to evaluate than it takes to evaluate the published study itself.
How does it work?
One author briefly answers 9 questions.
All participating authors receive an email asking for approval.
If everyone approves, it is saved and stays private until an author acts to make it public, or it remains private forever.
If made public, a single-page .pdf is generated. That document can be used as a supplement.
The .pdf contains a unique URL that allows for one-click verification. That URL can be included in the paper.