8-K

                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                            ------------------------


                                    FORM 8-K

                                 CURRENT REPORT


                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934


Date of Report (Date of earliest event reported)   July 8, 2004
                                                --------------------------------

                           AUTHENTIDATE HOLDING CORP.
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               (Exact name of Registrant as specified in charter)


       Delaware                          0-20190                 14-1673067
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(State or other jurisdic-              (Commission             (IRS Employer
 tion of incorporation)                File Number)          Identification No.)


       2165 Technology Drive, Schenectady, New York                  12308
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         (Address of principal executive offices)                  (Zip Code)


Registrant's telephone number, including area code  (518) 346-7799
                                                   -----------------------------



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         (Former name or former address, if changed since last report.)


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ITEM 5: OTHER EVENTS.

         On July 12, 2004, Authentidate Holding Corp. ("Authentidate") announced
that Mr. John Waters had joined its Board of Directors on July 8, 2004. A press
release disclosing the events was released on July 12, 2004 and is filed as
Exhibit 99.1 to this Current Report on Form 8-K (the "Current Report").

ITEM 7: FINANCIAL STATEMENTS AND EXHIBITS.

(c) Exhibits.


      The following exhibits are filed herewith:

EXHIBIT NO.                         DESCRIPTION

99.1                                Press release issued by Authentidate Holding
                                    Corp. dated July 12, 2004.


                                    SIGNATURE

         Pursuant to the requirements of the Securities Exchange Act of 1934,
the Registrant has duly caused this report on Form 8-K to be signed on its
behalf by the undersigned hereunto duly authorized.

Dated: July 12, 2004                            AUTHENTIDATE HOLDING CORP.
                                                (Registrant)

                                                By       /s/John T. Botti
                                                  -------------------------
                                                John T. Botti
                                                Chief Executive Officer


                                       2

EX-99.1

EXHIBIT 99.1

FOR IMMEDIATE RELEASE              Contact:  John A. Stiles
                                             John A. Stiles & Associates, L.L.C.
                                             314-994-0560

AUTHENTIDATE HOLDING CORP. ANNOUNCES ADDITION OF JOHN J. WATERS, CPA TO ITS
BOARD

SCHENECTADY, NY--JULY 12, 2004--AUTHENTIDATE HOLDING CORP. (NASDAQ: ADAT)
ANNOUNCED TODAY THAT IT HAS ADDED JOHN J. WATERS, CPA, TO ITS BOARD OF
DIRECTORS.

MR. WATERS SPENT HIS ENTIRE PROFESSIONAL CAREER, FROM 1967-2001, WITH ARTHUR
ANDERSEN, LLP. DURING HIS TENURE, HE HELD THE POSITIONS OF: PARTNER IN
CHARGE-ENTERTAINMENT INDUSTRY PROGRAM; PARTNER IN CHARGE-MANUFACTURING INDUSTRY
PROGRAM; AND PARTNER IN CHARGE (AUDIT) - TRANSACTION ADVISORY INDUSTRY PROGRAM.
SINCE RETIRING FROM ARTHUR ANDERSEN, HE HAS CONSULTED AND INVESTED WITH SEVERAL
PRIVATE EQUITY FIRMS AND HAS CONSIDERABLE EXPERIENCE IN THE FIELD OF MERGERS AND
ACQUISITIONS.

HE HOLDS A BACHELOR'S DEGREE IN BUSINESS ADMINISTRATION FROM IONA COLLEGE AND IS
A CERTIFIED PUBLIC ACCOUNTANT IN THE STATE OF NEW YORK, AS WELL AS A MEMBER OF
AICPA AND NEW YORK STATE SOCIETY OF CPA'S.

"I AM EXCITED ABOUT THE OPPORTUNITY TO SERVE ON THE AUTHENTIDATE BOARD," SAID
MR. WATERS. "THE OPPORTUNITIES AHEAD ARE NUMEROUS AND THE COMPANY SEEMS TO BE
STRATEGICALLY POSITIONED AND WELL CAPITALIZED TO EXECUTE ON ITS BUSINESS PLAN."

ABOUT AUTHENTIDATE HOLDING CORP.

AUTHENTIDATE HOLDING CORP. (AHC) IS THE HOLDING COMPANY OF FIVE BUSINESS UNITS;
DOCSTAR, AUTHENTIDATE INTERNATIONAL AG, AUTHENTIDATE, INC., DJS MARKETING
GROUP/COMPUTER PROFESSIONALS INTERNATIONAL AND TRAC MEDICAL SOLUTIONS, INC.
DOCSTAR SELLS PROPRIETARY DOCUMENT IMAGING SOFTWARE THAT INCLUDES THE
AUTHENTIDATE TECHNOLOGY. AUTHENTIDATE AND AUTHENTIDATE AG PROVIDE THE
AUTHENTICATION OF DIGITAL DATA THROUGH ITS PROPRIETARY AND PATENT PENDING
TECHNOLOGY. AUTHENTIDATE INTENDS TO ESTABLISH ITSELF AS THE AUTHORITY ON
"CONTENT SECURITY" AS IT IS A GROWING SECTOR OF THE ELECTRONIC NETWORK SECURITY
INFRASTRUCTURE MARKET. DJS DELIVERS PROFESSIONAL SERVICES CENTERED AROUND
TECHNOLOGY SYSTEMS INTEGRATION PROJECTS, STAFF AUGMENTATION, OUT-TASKING,
OUTSOURCING SERVICES AND RESELLS COMPUTER RELATED PRODUCTS. TRAC MEDICAL OFFERS
AN ELECTRONIC FORM PROCESSING SOLUTION AND UTILIZES THE AUTHENTIDATE TECHNOLOGY
TO PROVE THE AUTHENTICITY OF THE CONTENT REPRESENTED IN COMPLETED HEALTHCARE
FORMS.



THIS PRESS RELEASE CONTAINS FORWARD-LOOKING STATEMENTS WITHIN THE MEANING OF
SECTION 27A OF THE SECURITIES ACT OF 1933 AND SECTION 21E OF THE SECURITIES ACT
OF 1934. WHEN USED IN THIS RELEASE, THE WORDS "BELIEVE," "ANTICIPATE," "THINK,"
"INTEND," "PLAN," "WILL BE," "EXPECT," AND SIMILAR EXPRESSIONS IDENTIFY SUCH
FORWARD-LOOKING STATEMENTS. SUCH STATEMENTS REGARDING FUTURE EVENTS AND/OR THE
FUTURE FINANCIAL PERFORMANCE OF THE COMPANY ARE SUBJECT TO CERTAIN RISKS AND
UNCERTAINTIES, WHICH COULD CAUSE ACTUAL EVENTS OR THE ACTUAL FUTURE RESULTS OF
THE COMPANY TO DIFFER MATERIALLY FROM ANY FORWARD-LOOKING STATEMENT. SUCH RISKS
AND UNCERTAINTIES INCLUDE, AMONG OTHER THINGS, THE AVAILABILITY OF ANY NEEDED
FINANCING, THE COMPANY'S ABILITY TO IMPLEMENT ITS BUSINESS PLAN FOR VARIOUS
APPLICATIONS OF ITS TECHNOLOGIES, THE IMPACT OF COMPETITION, THE MANAGEMENT OF
GROWTH, AND THE OTHER RISKS AND UNCERTAINTIES THAT MAY BE DETAILED FROM TIME TO
TIME IN THE COMPANY'S REPORTS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION.
IN LIGHT OF THE SIGNIFICANT RISKS AND UNCERTAINTIES INHERENT IN THE
FORWARD-LOOKING STATEMENTS INCLUDED HEREIN, THE INCLUSION OF SUCH STATEMENTS
SHOULD NOT BE REGARDED AS A REPRESENTATION BY THE COMPANY OR ANY OTHER PERSON
THAT THE OBJECTIVES AND PLANS OF THE COMPANY WILL BE ACHIEVED.