Crossword puzzle clue "registered right to three rings"

Registered right to three rings?

Wrap right over left, tuck right underneath, pull, pinch right in a loop, wrap left around, push left through hole to create loop, pull loops

Turns a registered nurse into a RN?

Name registered at many an escort service

Events registered by seismometers, in brief

Its logo was the U.K.'s first registered trademark

Where gains are registered?

Openly registered as a member of an institution