Exhibit 3.1

                        AMENDED AND RESTATED CERTIFICATE
                                       OF
                                  INCORPORATION
                                       OF
                             DATAMARK HOLDING, INC.

                   (Originally incorporated as Exchequer, Inc.
          To be known hereafter as Digital Courier Technologies, Inc.)


The following  Amended and Restated  Certificate  of  Incorporation  of DataMark
Holding,  Inc.  amends  and  restates  the  provisions  of  and  supersedes  the
Certificate of  Incorporation  filed with the Secretary of State of the State of
Delaware  on May 16,  1985 in its  entirety  and  any  and all  certificates  of
amendment  filed with the  Secretary of State of the State of Delaware  prior to
September 16, 1998.

                                    ARTICLE I

                                      NAME
                                      ----

         The name of the  corporation  hereby  created shall be Digital  Courier
Technologies, Inc.

                                   ARTICLE II

                                    DURATION
                                    --------

         The Corporation shall continue in existence  perpetually  unless sooner
dissolved according to law.

                                   ARTICLE III

                                    PURPOSES
                                    --------

         The  purpose  of the  Corporation  is to  engage in any  lawful  act or
activity for which  corporations may be organized under the General  Corporation
Law of Delaware.

                                   ARTICLE IV

                                 CAPITALIZATION
                                 --------------

         The  total  number  of  shares  of  stock  of  all  classes  which  the
Corporation  shall have  authority  to issue is Twenty Two Million  Five Hundred
Thousand  (22,500,000),  of which Twenty Million  (20,000,000) shares shall have
the par value of One  Hundredth of One Cent ($.0001) each and shall be shares of
common  stock (the  "Common  Stock"),  and Two  Million  Five  Hundred  Thousand
(2,500,000)  shares  shall  have  the par  value  of One  Hundredth  of One Cent
($.0001) each and shall be shares of preferred stock (the "Preferred Stock").

                                    ARTICLE V

                                CLASSES OF STOCK
                                ----------------

         A  statement  of the  designations  and the  powers,  preferences,  and
rights, and the  qualifications,  limitations,  or restrictions  thereof, of the
shares of stock of each  class  which the  Corporation  shall be  authorized  to
issue, is as follows:

         (a) Preferred Stock.  Shares of preferred stock may be issued from time



to time in one or more  series  as may from  time to time be  determined  by the
Board of Directors.  Each series shall be distinctly  designated.  All shares of
any one series of the preferred stock shall be alike in every particular, except
that there may be different dates from which dividends thereon, if any, shall be
cumulative, if made cumulative. The powers, preferences, participating, optional
and other rights of each such series qualifications, limitations or restrictions
thereof,  if any,  may differ from those of any and all other series at any time
outstanding.  Subject to the provisions of subparagraph  (i) of Paragraph (c) of
this Article V, the Board of Directors of this  Corporation is hereby  expressly
granted  authority to fix by  resolution  or  resolutions  adopted  prior to the
issuance  of any  shares of each  particular  series  of  preferred  stock,  the
designation, powers, preferences and relative, participating, optional and other
rights and the qualifications,  limitations and restrictions thereof, if any, of
such series,  including,  without  limiting the  generality of the foregoing the
following:

               (i) The distinctive  designation of , and the number of shares of
preferred  stock  which  shall  constitute,  the  series,  which  number  may be
increased  (except as otherwise  fixed by the Board of  Directors)  or decreased
(but not below the number of shares  thereof  outstanding)  from time to time by
action of the Board of Directors;

               (ii) The rate and  times at which,  and the terms and  conditions
upon which, dividends, if any, on shares of the series shall be paid, the extent
of preferences or relation,  if any, of such dividends to the dividends  payable
on any other class or classes of stock of this Corporation,  or on any series of
preferred   stock,   and  whether  such   dividends   shall  be   cumulative  or
noncumulative;

               (iii)The right, if any, of the holders of shares of the series to
convert the same into, or exchange the same for any other  series,  or any other
class or classes of stock of this  Corporation,  and the terms and conditions of
such conversion or exchange;
          
               (iv) Whether shares of the series shall be subject to redemption,
and the redemption price or prices, including,  without limitation, a redemption
price or prices  payable in shares of the Common Stock,  cash or other  property
and the time or times at which, and the terms and conditions upon which,  shares
of the series may be redeemed;

               (v) The  rights,  if any,  of the holders of shares of the series
upon voluntary or involuntary liquidation merger, consolidation, distribution or
sale of assets, dissolution or winding up of this Corporation;

               (vi) The terms of the  sinking  fund or  redemption  or  purchase
account, if any, to be provided for shares of the series; and

               (vii)The  voting powers,  if any, of the holders of shares of the
series which may, without limiting the generality of the foregoing,  include (A)
the right to more or less than one vote per  share on any or all  matters  voted
upon by the  shareholders  and (B) the  right to vote as a series  by  itself or
together  without  preferred  stock as a class,  upon such  matters,  under such
circumstances  and upon  such  conditions  as the  Board of  Directors  may fix,
including,  without  limitation,  the  right,  voting  as a series  by itself or
together with other series of preferred or together with all series of preferred
stock as a class,  to elect one or more  directors  of this  Corporation  in the
event there shall have been a default in the payment of  dividends on any one or
more series of preferred stock or under such other  circumstances  and upon such
conditions as the Board may determine.

         (b) Common Stock.  The Common Stock shall be  non-assessable  and shall
not have cumulative voting rights or pre-emptive rights. In addition, the Common
Stock shall have the  following  powers,  preferences,  rights,  qualifications,
limitations and restrictions. -------------

               (i) After the requirements with respect to preferential dividends
of preferred  stock (fixed in accordance with the provisions of Paragraph (a) of
this Article V), if any,  shall have been met and after this  Corporation  shall
comply with all the  requirements,  if any, with respect to the setting aside of
funds as sinking funds or redemption or purchase  accounts  (fixed in accordance
with  provisions of Paragraph (a) of this Article V) and subject  further to any
other  conditions  which  may be fixed in  accordance  with  the  provisions  of
paragraph (a) of this Article V, but not otherwise,  the holders of Common Stock
shall be entitled to receive  such  dividends,  if any, as may be declared  from
time to time by the Board of Directors.

               (ii) After distribution in full of the preferential amount (fixed
in accordance  with the  provisions of Paragraph (a) of this Article V), if any,
to be distributed to the holders of preferred  stock in the event of a voluntary
or  involuntary  liquidation,  distribution  or sale of assets,  dissolution  or
winding  up of this  Corporation,  the  holders  of the  Common  Stock  shall be



entitled to receive all of the remaining  assets of this  Corporation,  tangible
and intangible,  of whatever kind available for  distribution  to  stockholders,
ratably in proportion to the number of shares of the Common Stock held by each;

               (iii)  Shares of the Common Stock may be issued from time to time
as the  Board  of  Directors  shall  determine  and on such  terms  and for such
consideration as shall be fixed by the Board of Directors;

               (iv) No  holder  of any of the  shares  of any class or series of
stock or of options, warrants or other rights to purchase shares of any class or
series  of  stock or of  other  securities  of the  Corporation  shall  have any
pre-emptive  right to purchase or subscribe for any unissued  stock of any class
or series of any additional shares of any class or series to be issued by reason
of any increase of the authorized  capital stock of the Corporation of any class
or series, or bonds, certificate of indebtedness, debentures or other securities
convertible  into or  exchangeable  for stock of the Corporation of any class or
series, or carrying any rights to purchase stock of any class or series, but any
such  unissued  stock,  additional  authorized  issue of  shares of any class or
series of stock or securities  convertible  into or  exchangeable  for stock, or
carrying any right to purchase stock,  may be issued and disposed of pursuant to
resolution  of the Board of  Directors  to such person,  firms,  corporation  or
associations,  whether  such  holders or  others,  and upon such terms as may be
deemed  advisable  by the  Board  of  Directors  in  the  exercise  of its  sole
discretion.

         (c) Other  Provisions.  The relative powers,  preferences and rights of
each series of preferred stock in relation to the powers, preferences and rights
of each other series of preferred  stock shall,  in each case,  be as fixed from
time to time by the Board of Directors in the resolution or resolutions  adopted
pursuant  to  authority  granted  in  Paragraph  (a) of this  Article V, and the
consent by class or series vote or  otherwise,  of the holders of the  preferred
stock  of such  of the  series  of  preferred  stock  as are  from  time to time
outstanding  shall not be required for the issuance by the Board of Directors of
any other series of preferred  stock whether the powers,  preferences and rights
of such other  series  shall be fixed by the Board of Directors as senior to, or
on a parity with the powers,  preferences and rights of such outstanding series,
or any of them:  provided,  however,  that the Board of Directors may provide in
such  resolution or resolutions  adopted with respect to any series of preferred
stock that the consent of the holders of a majority (or such greater  proportion
as shall be  therein  fixed) of the  outstanding  shares of such  series  voting
thereon  shall be  required  for the  issuance  of any or all  other  series  of
preferred stock.

               (ii)  Subject  to the  provisions  of  subparagraph  (i) of  this
Paragraph,  shares of any series of  preferred  stock may be issued from time to
time as the Board of Directors  shall  determine  and on such terms and for such
consideration as shall be fixed by the Board of Directors.

               (iii)  Shares of the Common Stock may be issued from time to time
as the  Board  of  Directors  shall  determine  and on such  terms  and for such
consideration as shall be fixed by the Board of Directors.

               (iv) No  holder  of any of the  shares  of any class or series of
stock or of options, warrants or other rights to purchase shares of any class or
series  of  stock or of  other  securities  of the  Corporation  shall  have any
pre-emptive  right to purchase or subscribe for any unissued  stock of any class
or series or any additional shares of any class or series to be issued by reason
of any increase of the authorized  capital stock of the Corporation of any class
or series, or bonds, certificate of indebtedness, debentures or other securities
convertible  into or  exchangeable  for stock of the Corporation of any class or
series, or carrying any rights to purchase stock of any class or series, but any
such  unissued  stock,  additional  authorized  issue of  shares of any class or
series of stock or securities  convertible  into or  exchangeable  for stock, or
carrying any right to purchase stock,  may be issued and disposed of pursuant to
resolution of the Board of Directors to such  persons,  firms,  corporations  or
associations,  whether  such  holders or  others,  and upon such terms as may be
deemed  advisable  by the  Board  of  Directors  in  the  exercise  of its  sole
discretion.

                                   ARTICLE VI

                                     BYLAWS
                                     ------

         In  furtherance  and not in limitation  of the powers  conferred by the



statute, the Board of Directors is expressly authorized to make, alter or repeal
the Bylaws of the Corporation.

                                  ARTICLE VII

                              MEETINGS AND RECORDS
                              --------------------

         Meetings  of  stockholders  may be held  within or without the State of
Delaware,  as the Bylaws may provide.  The books of the  Corporation may be kept
(subject  to any  provision  contained  in the  statutes)  outside  the State of
Delaware at such place or places as may be  designated  from time to time by the
Board of Directors or in the Bylaws of the  Corporation.  Elections of directors
need not be by written ballot unless the Bylaws of the Corporation so provide.

                                  ARTICLE VIII

                          REGISTERED OFFICE AND AGENT
                          ---------------------------

         The name of the  Corporation's  registered  agent  and  address  of its
registered office in the State of Delaware are:

                         The Corporation Trust Company
                              County of New Castle
                               1209 Orange Street
                           Wilmington, Delaware 19801

                                   ARTICLE IX

                              REMOVAL OF DIRECTORS
                              --------------------

         Any director of the  Corporation may be removed for cause at any annual
or special  meeting of the  shareholders  by the same vote as that  required  to
elect a director provided, that such director prior to his removal shall receive
a copy of the charges against him, delivered to him personally or by mail at his
address  appearing on the records of the Corporation,  at least thirty (30) days
prior to the  meeting  at  which  such  removal  is to be  considered,  and such
director  has an  opportunity  to be heard on such  charges  at the  meeting  of
shareholders  of the  Corporation  at which the question of his removal is to be
considered.

                                   ARTICLE X

                   INDEMNIFICATION OF OFFICERS AND DIRECTORS
                   -----------------------------------------

         The  Corporation  shall  indemnify any and all persons who may serve or
who have served at any time as director or  officers,  or who, at the request of
the Board of Directors of the Corporation, may serve, or at any time have served
as directors or officers of another corporation in which the Corporation at such
time owned or may own shares of stock, or which it was or may be a creditor,  or
may  own  shares  of  stock,  or  which  it was or may be a  creditor,  and  the
respective heirs,  administrators,  successors, and assigns, against any and all
expenses,  including amounts paid upon judgment,  counsel fees, and amounts paid
in settlement  (before or after suit is  commenced),  actually or necessarily by
such persons in connection with the defense or settlement of any claim,  action,
suit, or proceeding in which they, or any of them, are made parties, or a party,
or which  may be  assessed  against  them or any of them,  by reason of being or
having been directors or officers of the Corporation, or such other corporation,
except in  relation  to matters as to which any such  director or officer of the
Corporation, or such other corporations,  or former director or officer shall be
adjudged in any action,  suit or proceeding to be liable for his own  negligence
of misconduct in performance  of his duties.  Such  indemnification  shall be in
addition to any other rights to which those  indemnified  may be entitled  under
any Law, by-law, agreement, vote of stockholders or otherwise.

                                   ARTICLE XI

                                   AMENDMENT
                                   ---------


         Except as set forth  herein and in the General  Corporation  Law of the
State of Delaware, the Corporation reserves the right to amend, alter, change or
repeal any provision  contained in this  Certificate  of  Incorporation,  in the
manner now or hereafter  prescribed by statute,  and all rights  conferred  upon
stockholders are granted subject to this reservation.

                                  ARTICLE XII

                       OFFICERS' AND DIRECTORS' CONTRACTS
                       ----------------------------------

         No contract or other  transactions  between  this  Corporation  and any
other firm or  corporation  shall be  affected  by the fact that a  director  or
officer of this  Corporation  has an interest in, or is a director or officer of
such firm or other  corporation.  Any officer or director,  individually or with
others,  may be a party to , or may have an interest in, any transaction of this
Corporation or any  transaction  in which this  Corporation is a party or has an
interest.  Each  person who is now or may become an officer or  director of this
Corporation is hereby relieved from liability that he might otherwise  obtain in
the event such  officer or  director  contracts  with this  Corporation  for the
benefit  of himself  or any other  firm or  corporation  in which he may have an
interest, provided such officer or director acts in good faith.

         This  Amended  and  Restated   Certificate  of   Incorporation  of  the
Corporation  was duly adopted in accordance  with the provisions of Sections 242
and 245 to the General Corporation law of the State of Delaware.

         IN WITNESS  WHEREOF,  THE  CORPORATION  HAS  CAUSED  THIS  AMENDED  AND
RESTATED  CERTIFICATE OF  INCORPORATION TO BE SIGNED BY MITCHELL  EDWARDS,  ITS'
SECRETARY, THIS DAY OF SEPTEMBER,  1998.

                                                -------------------------
                                                DataMark Holdings, Inc.  


                                                -------------------------
                                                By:  Mitchell Edwards    
                                                Its:  Secretary