imprimatur

noun2

1. •
   An official license to publish or print something, especially when censorship applies.

   • The Cheats · A Comedy · Written in the Year, M.DC.LXII. Imprimatur, Roger L'estrange. Nov. 5. 1663. By John Wilson — 1664
2. •
   Any mark of official approval.

   • Children, the final imprimatur to family life, are being borrowed, adopted, created by artificial insemination. — 1988