preregister

Short definition from Wiktionary

Verb

1. 1
   To register for something (especially for a course of education) prior to its start.
2. 2
   To register or enroll (a person, especially a student) prior to the start of something.
3. 3
   To register (a study design and its planned statistical analysis) before the study by reporting (them) in the scientific literature via a registered report.