  We analyze patterns from CP-violating new physics (NP) in hadronic and
semileptonic rare charm $\vert \Delta c \vert=\vert \Delta u\vert=1$
transitions. Observation of direct CP-violation in hadronic decays, as in
$\Delta A_{\text{CP}}$, provides opportunities for $c \to u \,\ell^+ \ell^-$,
$\ell=e,\mu$ transitions, and vice versa. For the concrete case of flavorful,
anomaly-free $Z^\prime$-models a NP-interpretation of $\Delta A_{\text{CP}}$
suggests measurable CP-asymmetries in semileptonic decays such as $D \to \pi\,
\ell^+ \ell^-$ or $D \to \pi \pi\, \ell^+ \ell^-$. Conversely, an observation
of CP-violation in $c \to u\, e^+ e^-$ or $c \to u\, \mu^+ \mu^-$ decays
supports a NP--interpretation of $\Delta A_{\text{CP}}$. Flavorful
$U(1)^\prime$-extensions provide explicit U--spin and isospin breaking which
can be probed in patterns of hadronic decays of charm mesons. We work out
signatures for CP-asymmetries in $D^0 \to \pi^+ \pi^-$, $D^0 \to K^+ K^-$ and
$D^0 \to \pi^0 \pi^0$, $D^+ \to \pi^+ \pi^0$ decays, which can be probed in the
future at LHCb and Belle II and provide further informative cross checks.
