  We consider the interior inverse problem associated with the global
conservative {multipeakon} solution of the Camassa-Holm equation. Based on the
inverse spectral theory on the half-line and the oscillation property of
eigenfunctions, some {(non)}uniqueness results of {the} interior inverse
problem are obtained. In addition, we give the trace formula, which connects
the global conservative {multipeakon} solution with the corresponding
eigenvalues and normalized eigenfunctions.
