law: The Black Money (Undisclosed Foreign Income and Assets) and Imposition of Tax Act, 2015
  57. Proof of entries in records or documents.-
  (1) The entries in the records, or other documents, in the custody of a tax authority shall be admitted in evidence in any proceeding for the prosecution of any person for an offence under this Chapter.
  (2) The entries referred to in sub-section (1) may be proved by the production of-
  (a) the records or other documents (containing such entries) in the custody of the tax authority; or
  (b) a copy of the entries certified by that authority under its signature, as true copy of the original entries contained in the records or other documents in its custody.