Section 919-A. Block indices in the office of the county clerk in the county of Richmond

a.  The  county  clerk  of  the  county of Richmond shall
  continue to index under the proper block  numbers  all  instruments  now
  required  by  law to be recorded in the books of notices of lis pendens.
  Such block index of notice of lis pendens shall be entitled  "the  block
  index  of notice of lis pendens" and shall be ruled for entering therein
  the date of filing,  the  nature  of  the  action,  the  nature  of  the
  instrument,  the  court and index number, the first named defendant, the
  first named plaintiff, the lot number or street  address,  if  any,  the
  microfilm number and the proceedings had.
    b.  Such  county  clerk  shall also continue to index under the proper
  block numbers all statutory notices of liens or  claims  on  land  other
  than  lis  pendens  which  may be filed or recorded in his office, which
  index shall be entitled "the block index of liens" and  shall  be  ruled
  for  entering  therein the date of filing, the nature of the instrument,
  the owner of the premises affected by the notice, the name  and  address
  of  the  lienor by whom the claim is made, the amount, the lot number or
  street address, if any, and the proceeding had.
    c. On and after July first, nineteen hundred eighty-one,  the  use  of
  land  maps  in  the office of the county clerk of the county of Richmond
  shall be discontinued, and the land maps previously in use shall  remain
  on  file  for  the purpose of reference. On and after such date, the tax
  map for the borough of Staten Island shall be substituted for  the  land
  map  theretofore  in use for the county of Richmond, and reference shall
  be had to such tax map and to the block numbers designated  thereon  for
  the  purpose of indexing instruments required to be indexed in the block
  index of notice of lis pendens or in the block index of liens. Such  tax
  map shall be conclusive as to the location of block boundaries and block
  number designations. Such tax map may be referred to as the land map for
  the county of Richmond.
    d. Unless existing land and tax blocks are presently identical, on and
  after July first, nineteen hundred eighty-one, the indices of all blocks
  theretofore  existing in the block index of notice of lis pendens and in
  the block index of liens shall be  closed  except  for  the  purpose  of
  completing  the  indexing  of  instruments filed prior to such date. New
  block indices shall thereupon be opened for the block index of notice of
  lis pendens and for the block index of liens, which new indices shall be
  numbered to conform with the block numbers designated on the tax map  of
  the  borough  of  Staten  Island  and  shall thenceforth be used for all
  entries relating to land in such blocks. The date of  closing  shall  be
  entered  at  the end of each block index so closed and a reference shall
  be made to the block number of the corresponding block in the new  block
  index.  All  such  new  block  indices  shall  be endorsed on the covers
  thereof so as to show the date of the opening thereof.
    e. Whenever  the  boundaries  of  any  block  on  the  tax  map  shall
  thereafter  be  changed  or altered and renumbered according to law, the
  block indices of notice of lis  pendens  and  of  liens  of  such  block
  theretofore existing comprising the land in the changed or altered block
  so  renumbered  as aforesaid shall, except for the purpose of completing
  the indexing of instruments filed prior to such change or alteration and
  renumbering be closed and discontinued and new block indices  of  notice
  of  lis  pendens  and of liens shall be opened for every such renumbered
  block, which new  index  shall  thenceforth  be  used  for  all  entries
  relating  to land in such block. The date of closing shall be entered at
  the end of each block index so closed and a reference shall be  made  to
  the  number  of  every new, changed or altered block to be used in place
  thereof. The date of opening shall be entered at the beginning of  every

  new block index, with a reference to the number of every block before in
  use for the land contained in such new block.
    f.  Every  instrument  presented  to the county clerk of the county of
  Richmond for filing and required to be indexed in  the  block  index  of
  notice of lis pendens or in the block index of liens in order to entitle
  the  same  to  be  filed shall have endorsed thereon the number of every
  block on the current  tax  map  in  which  the  land  affected  by  such
  instrument is situate.
    g.  Such  county  clerk, so long as he deems it expedient, may prepare
  alphabetical indices of the parties to the instruments mentioned in this
  section, or to any of them, filed in his office, and of  the  owners  of
  land  against  which liens have been filed and of judgment debtors whose
  names appear on record. The particular form of such alphabetical indices
  shall be as such county clerk shall  determine,  and  shall  cover  such
  periods  and be brought down to such dates as he shall direct in respect
  to his own office.
    h. Whenever any instrument entitled to be filed and indexed under  the
  provisions  of  this  section shall be presented for record, there shall
  forthwith be endorsed thereon the date, hour and minute of  its  receipt
  and the same shall be entered in the proper index under the proper block
  number  thereof  in accordance with the items set forth in subdivision a
  or b of this section.
    i. The entries made in the block indices of notice of lis pendens  and
  of  liens  in conformity with the requirements of this section shall for
  the purpose of notice be deemed and taken to be a part of the record  of
  the  instrument  to  which such entries respectively refer, and shall be
  notice to subsequent purchasers or incumbrancers to the same extent  and
  with like effect as the filing of such instruments in the office of such
  county clerk now is or may be notice.
    j.  In  cases  where  any  instrument  shall  have  been filed with an
  erroneous designation, such county clerk on presentation of proper proof
  thereof shall enter such instrument in the proper index under the proper
  block number of every block, the designation of which  shall  have  been
  erroneously  stated. He shall at the same time make a note of such entry
  and of the date thereof in every place in which such instrument may have
  been erroneously indexed, opposite the entry thereof, and also upon  the
  instrument  itself,  if the same be in his possession or produced to him
  for the purpose, and the record of such instrument shall be constructive
  notice as to the property in any block not duly designated at  the  time
  of  such  filing  only  from  the  time  when the same shall be properly
  indexed.