law: Indian Christian Marriage Act,1872 
  33. Entries of such marriages to be
  
  signed and attested
  The entry of such
  
  marriage in both the certificate and marriage-register-book shall be signed by
  
  the person solemnizing the marriage, and also by the persons married, and shall
  
  be attested by two credible witnesses, other than the person solemnizing the
  
  marriage, present at its solemnization.
  Every such entry shall
  
  be made in order from the beginning to the end of the book, and the number of
  
  the certificate shall correspond with that of the entry in the
  
  marriage-register-book.