unofficial
information which is assumed to be well-known, but not declared officially by a recognized person or authority (value used with qualifier P5102 and P2241)
en-US/ˌʌnəˈfɪʃəl/
en-GB/ˌʌnəˈfɪʃl/
information which is assumed to be well-known, but not declared officially by a recognized person or authority (value used with qualifier P5102 and P2241)