  We propose a backscattering dominated prompt emission model for gamma-ray
bursts (GRB) prompt phase in which the photons generated through pair
annihilation at the centre of the burst are backscattered through Compton
scattering by an outflowing stellar cork. We show that the obtained spectra are
capable of explaining the low and high energy slopes as well as the
distribution of spectral peak energies in their observed prompt spectra.
