legal name on the family register; official registered name
Refers to the name as recorded in the 戸籍 (family register), which may differ from a commonly used name or alias. Often used in legal or administrative contexts.
See also: 戸籍
You must enter your legal name as it appears on the family register in your passport.
He uses a common name, but his official registered name is different.
本名 means 'real name' and can be used more broadly, while 戸籍名 is strictly the legal name on the family register.
Compound of 戸籍 (family register) and 名 (name).