OCA Acquisition Corp.
PROMISSORY NOTE, DATED JULY 20, 2022
<DOCUMENT>
<TYPE>EX-10.1
<SEQUENCE>3
<FILENAME>ea163299ex10-1_ocaacquicorp.htm
<DESCRIPTION>PROMISSORY NOTE, DATED JULY 20, 2022
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: right; background-color: white"><B>Exhibit
10.1</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white"><FONT STYLE="background-color: white">THIS
PROMISSORY NOTE (&ldquo;NOTE&rdquo;) HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE &ldquo;SECURITIES ACT&rdquo;).
THIS NOTE HAS BEEN ACQUIRED FOR INVESTMENT ONLY AND MAY NOT BE SOLD, TRANSFERRED OR ASSIGNED IN THE ABSENCE OF REGISTRATION OF THE RESALE
THEREOF UNDER THE SECURITIES ACT OR AN OPINION OF COUNSEL REASONABLY SATISFACTORY IN FORM, SCOPE AND SUBSTANCE TO THE COMPANY THAT SUCH
REGISTRATION IS NOT REQUIRED. &nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; background-color: white"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; background-color: white"><B>PROMISSORY NOTE</B></P>

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<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
  <TR>
    <TD STYLE="width: 49%; font-size: 10pt"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Principal Amount:&nbsp;Up to $747,500</FONT></TD>
    <TD STYLE="width: 51%">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right; text-indent: 0.5in">Dated as of July 20, 2022</P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">New York, New York</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0.5in; background-color: white">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in; background-color: white">OCA
Acquisition Corp.,&nbsp;a Delaware corporation (the &ldquo;<B>Maker</B>&rdquo;), promises to pay to the order of OCA Acquisition Holdings
LLC, or its registered assigns or successors in interest<FONT STYLE="font-variant: small-caps">&nbsp;</FONT>(the &ldquo;<B>Payee</B>&rdquo;),
or order, the principal sum of up to Seven Hundred Forty-Seven Thousand Five Hundred Dollars ($747,500) in lawful money of the United
States of America, on the terms and conditions described below.&nbsp;&nbsp;All payments on this Note (unless the full principal is converted
pursuant to Section 15 below) shall be made by check or wire transfer of immediately available funds or as otherwise determined by the
Maker to such account as the Payee may from time to time designate by written notice in accordance with the provisions of this Note.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white"><B>1. Principal.&nbsp;</B>The
principal balance of this Note shall be payable by the Maker on the earlier to occur of: (i) the date on which Maker consummates its initial
business combination (the &ldquo;<B>Business Combination</B>&rdquo;) and (ii) the date that the winding up of Maker is effective (such
date, the &ldquo;<B>Maturity Date</B>&rdquo;).&nbsp;The principal balance may be prepaid at any time, at the election of the Maker, without
premium or penalty. Under no circumstances shall any individual, including but not limited to any officer, director, employee or shareholder
of the Maker, be obligated personally for any obligations or liabilities of the Maker hereunder.</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white"><B>2. Interest.</B>&nbsp;No
interest shall accrue on the unpaid principal balance of this Note.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white"><B>3. Funding.&nbsp;</B>
Payee shall fund the principal of this Note in full no later than July 20, 2022.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white"><B>4. Application
of Payments.</B>&nbsp;All payments shall be applied first to payment in full of any costs incurred in the collection of any sum due under
this Note, including (without limitation) reasonable attorney&rsquo;s fees, then to the payment in full of any late charges and finally
to the reduction of the unpaid principal balance of this Note.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white"><B>5. Events
of Default.</B>&nbsp;The following shall constitute an event of default (&ldquo;<B>Event of Default</B>&rdquo;):</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in; background-color: white">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in; background-color: white">(a) <U>Failure
to Make Required Payments</U>. Failure by Maker to pay the principal amount due pursuant to this Note within five (5) business days of
the Maturity Date.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in; background-color: white">(b)
Voluntary Bankruptcy, Etc. The commencement by Maker of a voluntary case under any applicable bankruptcy, insolvency,
reorganization, rehabilitation or other similar law, or the consent by it to the appointment of or taking possession by a receiver,
liquidator, assignee, trustee, custodian, sequestrator (or other similar official) of Maker or for any substantial part of its
property, or the making by it of any assignment for the benefit of creditors, or the failure of Maker generally to pay its debts as
such debts become due, or the taking of corporate action by Maker in furtherance of any of the foregoing.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in; background-color: white">(c) <U>Involuntary
Bankruptcy, Etc</U>. The entry of a decree or order for relief by a court having jurisdiction in the premises in respect of Maker in an
involuntary case under any applicable bankruptcy, insolvency or other similar law, or appointing a receiver, liquidator, assignee, custodian,
trustee, sequestrator (or similar official) of Maker or for any substantial part of its property, or ordering the winding-up or liquidation
of its affairs, and the continuance of any such decree or order unstayed and in effect for a period of sixty (60) consecutive days.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in; background-color: white">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in; background-color: white"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white"><B>6. Remedies.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in; background-color: white">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in; background-color: white">(a) Upon
the occurrence of an Event of Default specified in Section 5(a) hereof, Payee may, by written notice to Maker, declare this Note to be
due immediately and payable, whereupon the unpaid principal amount of this Note, and all other amounts payable hereunder, shall become
immediately due and payable without presentment, demand, protest or other notice of any kind, all of which are hereby expressly waived,
anything contained herein or in the documents evidencing the same to the contrary notwithstanding.&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in; background-color: white">(b) Upon
the occurrence of an Event of Default specified in Sections 5(b) and 5(c), the unpaid principal balance of this Note, and all other sums
payable with regard to this Note, shall automatically and immediately become due and payable, in all cases without any action on the part
of Payee.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white"><B>7. Waivers.</B>&nbsp;Maker
and all endorsers and guarantors of, and sureties for, this Note waive presentment for payment, demand, notice of dishonor, protest, and
notice of protest with regard to the Note, all errors, defects and imperfections in any proceedings instituted by Payee under the terms
of this Note, and all benefits that might accrue to Maker by virtue of any present or future laws exempting any property, real or personal,
or any part of the proceeds arising from any sale of any such property, from attachment, levy or sale under execution, or providing for
any stay of execution, exemption from civil process, or extension of time for payment; and Maker agrees that any real estate that may
be levied upon pursuant to a judgment obtained by virtue hereof or any writ of execution issued hereon, may be sold upon any such writ
in whole or in part in any order desired by Payee.</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white"><B>8. Unconditional
Liability.</B>&nbsp;Maker hereby waives all notices in connection with the delivery, acceptance, performance, default, or enforcement
of the payment of this Note, and agrees that its liability shall be unconditional, without regard to the liability of any other party,
and shall not be affected in any manner by any indulgence, extension of time, renewal, waiver or modification granted or consented to
by Payee, and consents to any and all extensions of time, renewals, waivers, or modifications that may be granted by Payee with respect
to the payment or other provisions of this Note, and agrees that additional makers, endorsers, guarantors, or sureties may become parties
hereto without notice to Maker or affecting Maker&rsquo;s liability hereunder.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in; background-color: white">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white"><B>9. Notices.</B>&nbsp;All
notices, statements or other documents which are required or contemplated by this Note shall be made in writing and delivered: (i) personally
or sent by first class registered or certified mail, overnight courier service or facsimile or electronic transmission to the address
designated in writing, (ii) by facsimile to the number most recently provided to such party or such other address or fax number as may
be designated in writing by such party or (iii) by electronic mail, to the electronic mail address most recently provided to such party
or such other electronic mail address as may be designated in writing by such party. Any notice or other communication so transmitted
shall be deemed to have been given on the day of delivery, if delivered personally, on the business day following receipt of written confirmation,
if sent by facsimile or electronic transmission, one (1) business day after delivery to an overnight courier service or five (5) days
after mailing if sent by mail.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white"><B>10.&nbsp;Construction.</B>&nbsp;THIS
NOTE SHALL BE CONSTRUED AND ENFORCED IN ACCORDANCE WITH THE LAWS OF DELAWARE, WITHOUT REGARD TO CONFLICT OF LAW PROVISIONS THEREOF.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white"><B>11. Severability.</B>&nbsp;Any
provision contained in this Note which is prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective
to the extent of such prohibition or unenforceability without invalidating the remaining provisions hereof, and any such prohibition or
unenforceability in any jurisdiction shall not invalidate or render unenforceable such provision in any other jurisdiction.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white"><B>12. Trust
Waiver</B>.&nbsp;&nbsp;Notwithstanding anything herein to the contrary, the Payee hereby waives any and all right, title, interest or
claim of any kind (&ldquo;<B>Claim</B>&rdquo;) in or to any distribution of or from the trust account established in connection with the
Maker&rsquo;s initial public offering (the &ldquo;<B>IPO</B>&rdquo;), and hereby agrees not to seek recourse, reimbursement, payment or
satisfaction for any Claim against the trust account for any reason whatsoever; provided, however, that upon the consummation of the Business
Combination, Maker shall repay the principal balance of this Note out of the proceeds released to Maker from the trust account after payment
to holders of the Public Shares in accordance with Section 4 hereof. The foregoing shall bind any permitted assignee or transferee of
this Note.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in; background-color: white">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white"><B>13</B>.<B> Amendment;
Waiver</B>.&nbsp;&nbsp;Any amendment hereto or waiver of any provision hereof may be made with, and only with, the written consent of
the Maker and the Payee.</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: white"><B>14</B>.<B> Assignment</B>.
No assignment or transfer of this Note or any rights or obligations hereunder may be made by any party hereto (by operation of law or
otherwise) without the prior written consent of the other party hereto and any attempted assignment without the required consent shall
be void.</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0in; text-align: justify"><B>15.
Conversion</B>.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(a) Notwithstanding anything
contained in this Note to the contrary, at Payee&rsquo;s option, at any time prior to payment in full of the principal balance of this
Note, Payee may elect to convert up to Seven Hundred Forty-Seven Thousand Five Hundred Dollars ($747,500) of the unpaid principal balance
of this Note into that number of warrants, each whole warrant exercisable for one share of Class A common stock of the Maker upon the
consummation of an initial business combination (the &ldquo;<B>Conversion</B>&nbsp;<B>Warrants</B>&rdquo;), equal to: (x) the portion
of the principal amount of this Note being converted pursuant to this Section 15, divided by (y) $1.00, rounded up to the nearest whole
number of warrants. The Conversion Warrants shall be identical to the warrants issued by the Maker to the Payee in a private placement
upon consummation of the IPO. The Conversion Warrants and their underlying securities, and any other equity security of Maker issued or
issuable with respect to the foregoing by way of a stock dividend or stock split or in connection with a combination of shares, recapitalization,
amalgamation, consolidation or reorganization, shall be entitled to the registration rights set forth in Section 16 hereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(b) Upon any complete or partial
conversion of the principal amount of this Note, (i) such principal amount shall be so converted and such converted portion of this Note
shall become fully paid and satisfied, (ii) Payee shall surrender and deliver this Note, duly endorsed, to Maker or such other address
which Maker shall designate against delivery of the Conversion Warrants, (iii) Maker shall promptly deliver a new duly executed Note to
Payee in the principal amount that remains outstanding, if any, after any such conversion and (iv) in exchange for all or any portion
of the surrendered Note, Maker shall, at the direction of Payee, deliver to Payee (or its members or their respective affiliates) (Payee
or such other persons, the &ldquo;<B>Holders</B>&rdquo;) the Conversion Warrants, which shall bear such legends as are required, in the
opinion of counsel to Maker or by any other agreement between Maker and Payee and applicable state and federal securities laws.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(c) The Holders shall pay
any and all issue and other taxes that may be payable with respect to any issue or delivery of the Conversion Warrants upon conversion
of this Note pursuant hereto; provided, however, that the Holders shall not be obligated to pay any transfer taxes resulting from any
transfer requested by the Holders in connection with any such conversion.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(d) The Conversion Warrants
shall not be issued upon conversion of this Note unless such issuance and such conversion comply with all applicable provisions of law.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0in; text-align: justify"><B>16.
Registration Rights</B>.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(a) Reference is made to that
certain Registration Rights Agreement between Maker and the parties thereto, dated as of January 14, 2021 (the &ldquo;<B>Registration
Rights Agreement</B>&rdquo;). All capitalized terms used in this Section 16 shall have the same meanings ascribed to them in the Registration
Rights Agreement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(b) The Holders shall be entitled
to one Demand Registration with respect to the Conversion Warrants, which shall be subject to the same provisions as set forth in Section
2.1 of the Registration Rights Agreement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(c) The Holders shall also
be entitled to include the Conversion Warrants and their underlying securities in Piggyback Registrations, which shall be subject to the
same provisions as set forth in Section 2.2 of the Registration Rights Agreement; provided, however, that in the event that an underwriter
advises Maker that the Maximum Number of Securities has been exceeded with respect to a Piggyback Registration, the Holders shall not
have any priority for inclusion in such Piggyback Registration.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(d) Except as set forth above,
the Holders and Maker, as applicable, shall have all of the same rights, duties and obligations set forth in the Registration Rights Agreement.</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; background-color: white">[Signature page follows]</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in; background-color: white"><B>IN WITNESS WHEREOF</B>,
Maker, intending to be legally bound hereby, has caused this Note to be duly executed by the undersigned as of the day and year first
above written.</P>

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<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
  <TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD COLSPAN="3"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>OCA ACQUISITION CORP.</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD COLSPAN="2">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">By:</FONT></TD>
    <TD COLSPAN="2" STYLE="border-bottom: black 1.5pt solid"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><I>/s/ Jeffrey Glat</I></FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; width: 60%">&nbsp;</TD>
    <TD STYLE="vertical-align: top; width: 4%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; width: 5%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Name:&nbsp;</FONT></TD>
    <TD STYLE="vertical-align: bottom; width: 31%"> <FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Jeffrey Glat </FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Title: </FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Chief Financial Officer </FONT></TD></TR>
  </TABLE>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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