  Deeply virtual Compton scattering (DVCS) allows one to probe Generalized
Parton Distributions (GPDs) describing the 3D structure of the nucleon. We
report the first measurement of the DVCS beam-spin asymmetry using the CLAS12
spectrometer with a 10.2 and 10.6 GeV electron beam scattering from unpolarised
protons. The results greatly extend the $Q^2$ and Bjorken-$x$ phase space
beyond the existing data in the valence region and provide over 2000 new data
points measured with unprecedented statistical uncertainty, setting new, tight
constraints for future phenomenological studies.
