Document:

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                                                                    EXHIBIT 4.12

                         CHEQUEMATE INTERNATIONAL, INC.
                                d/b/a C3D Digital
                         330 Washington Blvd. Suite 507
                         Marina del Rey, Ca. 90292-5146
                                 (310) 306-6666
                               (310) 305-1455 fax
Bill Massey, CEO
Cinema Internet Networks, Inc.
320-1333 Johnston Street
Vancouver, BC V6H 3R9

Re:   Exclusive Agent Agreement for the Canadian PPV Assets      August 3, 2000

Dear Bill:

This is an Exclusive Agent Agreement between our two companies, and we have
agreed that:

     1.   CinemaWorks (CWK) has the exclusive right to sell the Canadian PPV
          assets specified in the PPV Asset Purchase Agreement signed by the
          Parties on or about March 1, 2000.
     2.   Because CWK has title to the Canadian PPV assets, it is CWK's
          responsibility to provide clear title to the assets to the buyer.
     3.   The term of this Exclusive Agent Agreement is one year.
     4.   CWK shall retain all costs and stock proceeds from the sale of these
          assets, and the sale price and terms will be the sole responsibility
          and decision of CWK. If the proceeds from the sale are in the form of
          publicly traded stock, it shall be valued at the average market price
          for the previous five working days. If not publicly traded, Chequemate
          and CWK must agree on its value prior to the sale.

     5.   CWK will use its best efforts to maximize the sale price of the PPV
          assets on behalf of CWK and Chequemate.

Very truly yours,

  /s/ Alan Hunter
----------------------------
Alan Hunter
General Counsel
Chequemate International, Inc.

Cinema Internet Networks, Inc. agrees to the above provisions.

  /s/ William Massey                                 August 3, 2000
----------------------------           ----------------------------------

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William Massey, CEO                              Dated

Chequemate International Inc.                                    August 3, 2000
330 Washington Ste. 330
Marina Del Rey, Ca. 90292

Attn:  Michael Heil CEO
          cc:  Alan Hunter and Paul LaBarre

This letter is to confirm our phone conversation today between myself, Paul
LaBarre and Bill Massey. We have agreed on the following in order to close the
purchase of the CinemaWorks ("CWK") assets by Chequemate ("C-3D"). The following
amendments were agreed to by the parties. All dollars are US$ unless otherwise
noted.

     1.  a) The new agreed net purchase price of the PPV assets is $251,000. At
         this price, CWK still retains the Integra lease obligation until the
         lease is paid by CWK or assigned to a purchaser of the Canadian PPV
         assets.

         b) To purchase the PPV assets, Chequemate will immediately deliver to
         the escrow agent a certificate for 55,000 restricted shares and
         immediately file a registration statement (S-3) with respect to those
         shares to be released when shareholder approval is obtained by
         CinemaWorks.

         c) In addition, Chequemate will immediately place 40,000 restricted
         C-3D Shares (144 stock) in escrow with Paige Fraser. The holding period
         for these shares will begin on the date of this Agreement between the
         parties.

     2.  Cinema Works will immediately (within 1 working day of Paige Fraser
         receiving the Shares in #1 in escrow) call an extraordinary shareholder
         meeting to approve the disposition of the PPV assets, a fait accompli.
         This step is anticipated to be completed in approximately 30 days.

     3.  CWK and Chequemate will sign a separate "Exclusive Agent Agreement"
         allowing CinemaWorks exclusive right to sell the Canadian PPV assets
         for an amount solely determined by CinemaWorks. However, CWK will use
         its best efforts to maximize the sale price of the assets.

     4.  Title to the PPV assets in Canada will remain with CWK until such time
         as the assets are sold by CWK and title is transferred to a new buyer.
         All cash and/or stock proceeds from the purchase will be retained by
         CWK.

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     5.  Until, the PPV assets in Canada are sold or until the restricted Shares
         are released from escrow as per #7 below, Chequemate and its
         subsidiary, Hotel Movie Network (HMN), will provide monthly new movies
         and perform service calls for the Canadian hotel PPV systems in the
         same professional manner as they do for the USA-based PPV assets. At
         the same time, all monthly PPV movie revenues collected from the
         Canadian PPV assets will continue to be sent to CWK. CinamaWorks will
         also continue to invoice the Canadian PPV assets until the assets are
         sold or until the 144 Shares are saleable under Rule 144 and released
         from escrow as per #7 below.

     6.  CinemaWorks will continue to be liable for-and pay the Integra lease
         payment each month from revenues collected in #5. And, the balance of
         collected revenues will be sent to Chequemate on a quarterly basis
         until such time as the Canadian PPV assets are sold to another company.

     7.  a) If CWK for any reason is unable to sell the Canadian PPV assets,
         then the restricted stock will be transferred to CWK from escrow after
         one (1) year and the Shares become saleable under Rule 144.

              a)   However, simultaneous with those Shares being released from
                   escrow to CWK, CinemaWorks will assign free and clear title
                   of the Canadian PPV assets to Chequemate.

              b)   If there is money still owed on the Integra lease by CWK at
                   this time, then it will be CWK's sole obligation to pay the
                   remainder of the Integra lease.

     8.  CWK will see shareholder approval for the disposition of its PPV
         assets, with the understanding that the lease obligation to Scott
         Applegate must be removed from Bill Massey and CinemaWorks either
         directly by Applegate or by Chequemate after taking assignment of this
         obligation from Applegate. This may be accomplished by any documents
         suitable to protect Bill Massey and CWK from any and all legal actions
         related to what is now the Applegate lease obligation.

     9.  Should CWK successfully sell the Canadian PPV assets before the
         Chequemate restricted Shares become saleable under Rule 144, then the
         total proceeds amount shall be credited to Chequemate in the form of
         restricted Shares to be released to CWK and Chequemate from escrow. The
         value per restricted Share credited to Chequemate will be $3.00. For
         example: if the total proceeds from the sale of the Canadian PPV assets
         are $75,000, then Chequemate will receive 25,000 shares from escrow
         with the remaining 15,000 shares going to CWK.

Signed:                                Signed:

    /s/ Bob Hahn                       /s/ J. Michael Heil
------------------------------         ----------------------------
Bob Hahn                               Michael J. Heil
CFO, Cinema Internet Networks, Inc.    CEO, Chequemate International Inc.<PAGE>

                                                                    EXHIBIT 4.13

                           PLEDGE AND ESCROW AGREEMENT

THIS AGREEMENT dated as of the 23rd day of August, 2000.

BETWEEN:

                  CINEMA INTERNET NETWORKS INC. of Pier 32, Granville Island,
                  Suite 320, 1333 Johnston Street, Vancouver, British Columbia,
                  V6H 3R9

                  (hereinafter referred to as the "Shareholder")

                                                              OF THE FIRST PART
AND:

                  CHEQUEMATE INTERNATIONAL INC., a company incorporated pursuant
                  to the laws of the State of Utah and having an office located
                  at 330 Washington Blvd., Suite 597 Marina del Ray, California
                  90292

                  (hereinafter referred to as "Chequemate")

                                                              OF THE SECOND PART
AND:

                  LINDA J. HOGG, Barrister & Solicitor, of Suite 1700, 1185 West
                  Georgia Street, Vancouver, British Columbia, V6E 4E6

                  (hereinafter referred to as the "Escrow Agent")

                                                               OF THE THIRD PART

WHEREAS:

A. The Shareholder is the registered owner of ninety five thousand (95,000)
fully paid and non-assessable common shares (the "Shares") in the capital of
Chequemate;

B. The Shareholder as vendor and Chequemate as purchaser have entered into an
asset purchase agreement dated May 25, 2000 and modified by Agreement dated
August 3, 2000 (jointly the "Asset Purchase Agreement") regarding the purchase
by Chequemate of certain assets of the Shareholder and in accordance with the
Asset Purchase Agreement have entered into a Bill of Sale;

C. Chequemate and the Vendor have agreed to deposit in escrow the 95,000 shares
and the Bill of Sale with the Escrow Agent on the terms and conditions set out
herein;

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         NOW THEREFORE THIS AGREEMENT WITNESSES that, in consideration of the
mutual covenants and conditions herein set out the parties agree as follows:

1. The Shareholder and Chequemate hereby deposit the Bill of Sale and the Shares
(collectively the "Escrow Documents") and all income from any of the Shares into
escrow with the Escrow Agent, and the Escrow Agent is to hold the Escrow
Documents in accordance with the terms of this Agreement.

2. The escrow hereunder will be discharged and released on September 30, 2000
whereupon the Shares shall be returned to Chequemate and the Bill of Sale to the
Shareholder, or if, prior to September 30, 2000, Chequemate and the Shareholder
jointly give notice in writing to the Escrow Agent that the respective
conditions precedent to the Asset Purchase Agreement have been satisfied then
the Shares may be released to the Shareholder and the Bill of Sale released to
Chequemate.

3. The Escrow Agent agrees to comply with any directions as to delivery of the
Escrow Documents upon receipt of either:

         (a)      a notice in writing signed by both the Shareholder and
                  Chequemate; or

         (b)      a Court order served on the Escrow Agent.

4. The Escrow Agent shall be entitled to employ such legal counsel and other
experts as the Escrow Agent may deem necessary to properly advise the Escrow
Agent in connection with the Escrow Agent's duties hereunder, and may rely upon
the advice of such counsel, and may pay such counsel reasonable compensation
therefor. The Escrow Agent has acted as legal counsel for the Shareholder, from
time to time, notwithstanding its duties as the Escrow Agent hereunder.
Chequemate consents to the Escrow Agent acting in such capacity as legal counsel
for the Shareholder and waives any claim that such representation represents a
conflict of interest on the part of the Escrow Agent.

5. The Escrow Agent's responsibilities as escrow agent hereunder shall terminate
if the Escrow Agent shall resign by written notice to Chequemate and the
Shareholder. In the event of any such resignation, the Shareholder and
Chequemate shall appoint a successor Escrow Agent.

6. If the Escrow Agent reasonably requires other or further instruments in
connection with the Joint Escrow Instructions or obligations in respect hereto,
the necessary parties hereto shall jointly furnish such instruments.

7. It is understood and agreed that should any dispute arise with respect to
the delivery and/or ownership or right of possession of the Escrow Property
held by the Escrow Agent hereunder, the Escrow Agent is authorized and
directed in the Escrow Agent's sole discretion (1) to retain in the Escrow
Agent's possession without liability to anyone, all or any part of the Escrow
Property until such disputes shall have been settled either by mutual written
agreement of the parties concerned or by a final order, decree or judgment of
a court of competent jurisdiction

<PAGE>

after the time for appeal has expired and no appeal has been perfected, but
the Escrow Agent shall be under no duty whatsoever to institute or defend any
such proceedings or (2) to deliver the Escrow Property held by the Escrow
Agent hereunder to a court having competent subject matter jurisdiction in
accordance with the applicable procedure therefor.

8. The Escrow Agent will have no duties or obligations other than those
specifically set forth in this Agreement.

9. The Escrow Agent will not be obliged to take any action hereunder which
might, in the Escrow Agent's judgement, involve any expense or liability unless
the Escrow Agent has been furnished with reasonable indemnity by the Shareholder
or Chequemate or both.

10. The Escrow Agent is not bound in any way by any other contract or agreement
between the parties hereto whether or not the Escrow Agent has knowledge thereof
or of its terms and conditions and the Escrow Agent's only duty, liability and
responsibility will be to hold and deal with the Escrow Documents as herein
directed.

11. The Escrow Agent will be entitled to assume that any notice and evidence
received by them pursuant to this Agreement from either of the Shareholder or
Chequemate has been duly executed by the party by whom it purports to have been
signed and the Escrow Agent will not be obliged to enquire into the sufficiency
or authority of any signatures appearing on such notice or evidence.

12. The Shareholder and Chequemate jointly and severally covenant and agree to
indemnify the Escrow Agent and to hold the Escrow Agent harmless against loss,
liability or expense incurred without negligence or bad faith on the Escrow
Agents part arising out of or in connection with the administration of their
duties hereunder, including the costs and expenses of defending themselves
against any claim or liability arising therefrom.

13. The Shareholder agrees to pay the Escrow Agent reasonable fees plus
disbursements and applicable taxes for the Escrow Agent services as Escrow Agent
hereunder.

14. This Agreement will be binding upon and enure to the benefit of the parties
hereto and their respective heirs, administrators, successors and permitted
assigns.

15. The rights and obligations of any party hereto are not assignable without
the written consent of the other parties hereto.

16. This Agreement constitutes the entire agreement amongst the parties with
respect to the subject matter hereof.

17. This agreement shall be governed by the laws of the Province of British
Columbia.

         IN WITNESS WHEREOF the parties have duly executed this Agreement as of
the day and year first above written.

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THE CORPORATE SEAL OF CINEMA
INTERNET NETWORKS INC. was
affixed in the presence of;

/s/ Bill Massey                                              c/s
-------------------------
Authorized Signatory

/s/ Robert Hahn
-------------------------
Authorized Signatory

THE CORPORATE SEAL OF
CHEQUEMATE INTERNATIONAL,
INC. was hereto affixed in the presence
of:

/s/ J. Michael Heil                                          c/s
--------------------------
Authorized Signatory

--------------------------
Authorized Signatory

SIGNED, SEALED AND DELIVERED
by LINDA J. HOGG, the Escrow Agent,
in the presence of:

--------------------------                  ------------------------
Witness                                     LINDA J. HOGG

--------------------------
Witness

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