Exhibit 4.2





 


	NUMBER C-	 	 
	 	 	 
	 	 	
    _________ SHARES

    SEE REVERSE FOR CERTAIN DEFINITIONS

     

    CUSIP



 


BLOCKCHAIN MOON ACQUISITION CORP.

INCORPORATED UNDER THE LAWS OF STATE OF DELAWARE

COMMON STOCK


 


This Certifies that is the owner of


 


FULLY PAID AND NON-ASSESSABLE SHARES OF COMMON
STOCK OF THE PAR VALUE OF US$0.0001 EACH OF


 


BLOCKCHAIN MOON ACQUISITION CORP.


(THE “COMPANY”)


 


subject to the Company’s amended and restated
certificate of incorporation, as the same may be amended from time to time, and transferable on the books of the Company in person or
by duly authorized attorney upon surrender of this certificate properly endorsed.


 


The Company will be forced to redeem all of its
shares of common stock if it is unable to complete a business combination by            ,
2022 all as more fully described in the Company’s final prospectus dated          ,
2021.


 


This certificate is not valid unless countersigned
by the Transfer Agent and registered by the Registrar.


 


Witness the facsimile signatures of its duly authorized
officers.


 


	Chief Executive Officer	 	Secretary
	 	 	 
	 	 	 


 


	CONTINENTAL STOCK TRANSFER

 & TRUST COMPANY	 	 
	 	 	 
	 	 	 
	Name:	 	 
	Title:	 	 


 


 






     


     


    

 


BLOCKCHAIN MOON ACQUISITION CORP.


 


The Company will furnish without charge to each
stockholder who so requests the powers, designations, preferences and relative, participating, optional or other special rights of each
class of stock or series thereof of the Company and the qualifications, limitations, or restrictions of such preferences and/or rights.
This certificate and the shares of common stock represented thereby are issued and shall be held subject to all the provisions of the
amended and restated certificate of incorporation as the same may be amended from time to time, and resolutions of the Board of Directors
providing for the issue of securities (copies of which may be obtained from the secretary of the Company), to all of which the holder
of this certificate by acceptance hereof assents. The following abbreviations, when used in the inscription on the face of this certificate,
shall be construed as though they were written out in full according to applicable laws or regulations:


 


	TEN COM	—	as tenants in common	 	UNIF GIFT MIN ACT	—	 	Custodian	 
	 	 	 	 	 	 	(Cust)	 	(Minor)
	TEN ENT	—	as tenants by the entireties	 	 	 	 	 	 
	 	 	 	 	 	 	 	 	 
	JT TEN	—	as joint tenants with right of survivorship and not as tenants in common	 	 	under Uniform Gifts to Minors Act
	 	 	 	 	 	 
	 	 	 	 	(State)


 


Additional abbreviations may also be used though
not in the above list.


 


For value received, _______________ hereby
sells, assigns and transfers unto ______________________________


 


	 	 
	(PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER(S) OF ASSIGNEE(S))	 
	 	 
	 	 
	(PLEASE PRINT OR TYPEWRITE NAME(S) AND ADDRESS(ES), INCLUDING ZIP CODE, OF ASSIGNEE(S))	 
	 	 
	Shares represented by the within Certificate, and hereby irrevocably constitutes and appoints___________________	 
	 	 
	Attorney to transfer the said shares on the books of the within named Company with full power of substitution in the premises.	 
	 	 	 
	Dated:	 	 
	 	 	 	 


 


	NOTICE: THE SIGNATURE(S) TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME AS WRITTEN UPON THE FACE OF THE CERTIFICATE IN EVERY PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATEVER.
	 
	Signature(s) Guaranteed:

By


 


 


THE SIGNATURE(S) MUST BE GUARANTEED BY AN
ELIGIBLE GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE
GUARANTEE MEDALLION PROGRAM, PURSUANT TO S.E.C. RULE 17Ad-15 UNDER THE SECURITIES ACT OF 1933, AS AMENDED).


 


In each case, as more fully described in the Company’s
final prospectus dated           , 2021, the holder(s) of this certificate shall
be entitled to receive a pro-rata portion of certain funds held in the trust account established in connection with its initial public
offering only in the event that (i) the Company redeems the shares of common stock sold in its initial public offering because it
does not consummate an initial business combination by            , 2022, (ii) the
Corporation redeems the shares of common stock sold in its initial public offering in connection with a stockholder vote to amend the
Company’s amended and restated certificate of incorporation (as the same may be amended from time to time) to modify the substance
and timing of the Company’s obligation to redeem 100% of the shares of common stock if it does not consummate and initial business
combination by            , 2022, or (iii) if the holder(s) seek(s) to
redeem for cash his, her or its respective shares of common stock in connection with a tender offer (or proxy solicitation, solely in
the event the Company seeks stockholder approval of the proposed initial business combination) setting forth the details of a proposed
initial business combination. In no other circumstances shall the holder(s) have any right or interest of any kind in or to the trust
account.


 






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