  It is shown how the evidence state space in quantum bit commitment may be
made to depend on the bit value 0 or 1 with split entangled pairs. As a
consequence, one can obtain a protocol that is perfectly concealing, but is
also $\epsilon$-binding because the bit-value dependent evidence space prevents
the committing party from cheating by means of a local transformation that is
independent of the part of evidence state space that has never been in his
possession.
