  We provide the first explicit proposal for all microstates of generic black
holes in three dimensions (of Banados-Teitelboim-Zanelli-type): black hole
microstates, termed "horizon fluffs", are a particular class of near horizon
soft hairs which have zero energy as measured by the horizon observer and
cannot be distinguished by observers at finite distance from the horizon. These
states are arranged in orbits of the two-dimensional conformal algebra
associated with the asymptotic black hole geometry. We count these microstates
using the Hardy-Ramanujan formula for the number of partitions of a given
integer into non-negative integers, recovering the Bekenstein-Hawking entropy.
We discuss possible extensions of our black hole microstate construction to
astrophysical Kerr-type black holes.
