registered
v.v. to put your name or information on an official list. You do this to join a class, vote, or use a new service.
v. to record or enter information in an official list or system. Transitive when taking an object; often used in the passive voice to indicate official status.
You must register your car before you can drive it.
New students need to register for their classes at the main office before the semester begins next week.
The law requires all foreign businesses to register with the local authorities to ensure they comply with national tax regulations and labor standards.
Often used with the preposition 'for' when joining an event or 'with' when reporting to an authority.
I registered to the websiteI registered for the websiteWhen joining a service or event, the verb typically takes 'for' rather than 'to'.