The writing does not have to be in any special form. However, it must identify the
child by name or otherwise, (e.g., by BIC), and must acknowledge or identify the child
as the NH's son or daughter.
EXAMPLES:An application for Social Security benefits filed by the NH listing the child as his/hers,
or an income tax return listing the child as his/hers, is a written acknowledgment.
REFERENCE:See SSR 66-47.