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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 MicAuKOD9HyW7Iq1qMdmuqhBEnU9KGcCjd8A6SAHQXa02ktsB3MDDJUpb93f3Iz+
 IBjiBbeBZNwQtrBaPzzeaA==

<SEC-DOCUMENT>0001125282-05-004660.txt : 20050902
<SEC-HEADER>0001125282-05-004660.hdr.sgml : 20050902
<ACCEPTANCE-DATETIME>20050902164720
ACCESSION NUMBER:		0001125282-05-004660
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20050901
FILED AS OF DATE:		20050902
DATE AS OF CHANGE:		20050902

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AUTHENTIDATE HOLDING CORP
		CENTRAL INDEX KEY:			0000885074
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER INTEGRATED SYSTEMS DESIGN [7373]
		IRS NUMBER:				141673067
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		2165 TECHNOLOGY DRIVE
		CITY:			SCHENECTADY
		STATE:			NY
		ZIP:			12308
		BUSINESS PHONE:		5183467799

	MAIL ADDRESS:	
		STREET 1:		2165 TECHNOLOGY DRIVE
		CITY:			SCHENECTADY
		STATE:			NY
		ZIP:			12308

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BITWISE DESIGNS INC
		DATE OF NAME CHANGE:	19930328

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Goldman Roger
		CENTRAL INDEX KEY:			0001314391

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-20190
		FILM NUMBER:		051068383

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		(518) 346-7799

	MAIL ADDRESS:	
		STREET 1:		AUTHENTIDATE HOLDING CORP.
		STREET 2:		2165 TECHNOLOGY DRIVE
		CITY:			SCHENECTADY
		STATE:			NY
		ZIP:			12308
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2005-09-01</periodOfReport>

    <issuer>
        <issuerCik>0000885074</issuerCik>
        <issuerName>AUTHENTIDATE HOLDING CORP</issuerName>
        <issuerTradingSymbol>ADAT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001314391</rptOwnerCik>
            <rptOwnerName>Goldman Roger</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>AUTHENTIDATE HOLDING CORP.</rptOwnerStreet1>
            <rptOwnerStreet2>2165 TECHNOLOGY DRIVE</rptOwnerStreet2>
            <rptOwnerCity>SCHENECTADY</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>12308</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Director Stock Options</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>3.00</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2005-09-01</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>7500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2005-09-01</value>
            </exerciseDate>
            <expirationDate>
                <value>2010-09-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>7500</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7500</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <ownerSignature>
        <signatureName>/s/ Roger O. Goldman</signatureName>
        <signatureDate>2005-09-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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