Document:

EX-10.3

 Exhibit 10.3 

PRIVATE PLACEMENT UNITS PURCHASE AGREEMENT 

THIS PRIVATE PLACEMENT UNITS PURCHASE AGREEMENT (as it may from time to time be amended and including all exhibits referenced herein, this
“Agreement”), dated as of November 9, 2021, is entered into by and between Blockchain Coinvestors Acquisition Corp. I, a Cayman Islands exempted company (the “Company”), and Blockchain Coinvestors
Acquisition Sponsors I LLC, a Delaware limited liability company (the “Purchaser”). 
 WHEREAS, the Company is a
blank check company formed for the purpose of acquiring one or more businesses or entities (a “Business Combination”); 

WHEREAS, the Company intends to consummate an initial public offering of the Company’s units (the “Public
Offering”), with each unit (each, a “Unit”) consisting of one Class A ordinary share of the Company, par value $0.0001 per share (each, a “Share”), and
one-half of one redeemable warrant, each whole warrant (each, a “Warrant”) entitling the holder to purchase one Share at an exercise price of $11.50 per Share, as set forth in the
Company’s Registration Statement on Form S-1, filed with the U.S. Securities and Exchange Commission (the “SEC”), File Number 333-259091
under the Securities Act of 1933, as amended (the “Securities Act”). 
 WHEREAS, the Purchaser has agreed to
purchase, at a price of $10.00 per Unit, an aggregate of 1,244,000 Units (or 1,322,300 Units if the underwriters exercise their over-allotment option in full) (the “Private Placement Units”), with each Private Placement Unit
consisting of one Share and one-half of one Warrant. 
 NOW THEREFORE, in consideration of the
mutual promises contained in this Agreement and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties to this Agreement hereby, intending legally to be bound, agree as follows: 

AGREEMENT 

Section 1. Authorization, Purchase and Sale; Terms of the Private Placement Units. 

A. Authorization of the Private Placement Units. The Company has duly authorized the issuance and sale of the Private Placement Units
(and the underlying securities) to the Purchaser. 
 B. Purchase and Sale of the Private Placement Units. On the date of the
consummation of the Public Offering (the “Closing Date”) or on such earlier date as may be mutually agreed by the Purchaser and the Company, the Company shall issue and sell to the Purchaser, and the Purchaser shall purchase
from the Company, an aggregate of 1,244,000 Private Placement Units (or 1,322,300 Private Placement Units if the underwriters exercise their over-allotment option in full) at a price of $10.00 per Unit for an aggregate purchase price of $12,440,000
(or $13,223,000 if the underwriters exercise their over-allotment option in full (the “Purchase Price”). The Purchaser shall pay the Purchase Price by wire transfer of immediately available funds in the following amounts: (i)
$2,000,000 to the Company at a financial institution to be chosen by the Company, and (ii) $10,440,000 to the trust account maintained by Continental Stock Transfer & Trust Company, acting as trustee (the “Trust
Account”), in each case in accordance with the Company’s wiring instructions, at least one (1) business day prior to the Closing Date. On the Closing Date, subject to the receipt of funds pursuant to the immediately prior
sentence, the Company, at its option, shall deliver a certificate evidencing the Private Placement Units purchased on such date duly registered in the Purchaser’s name to the Purchaser or effect such delivery in book-entry form. 

C. Terms of the Private Placement Units. Each Private Placement Unit shall be identical to the Units to be sold by the Company in the
Public Offering, except that: 
 (i) The undersigned agrees not to seek conversion or seek to sell in any tender offer, in connection with
any proposed Business Combination any Class A ordinary shares included in the Private Placement Units; 

 (ii) The Warrants underlying the Private Placement Units (a) will not be redeemable by
the Company, (b) may be exercised for cash or on a cashless basis, as described in the registration statement relating to the Public Offering (the “Registration Statement”), and (c) may not be exercised after five
years from the effective date of the Registration Statement so long as the Private Placement Warrants included in the Private Placement Units are held by the undersigned or its designees or affiliates; 

(iii) The Private Placement Units (and underlying securities) will not be transferable by the undersigned until 30 days after the consummation
of a Business Combination (subject to certain exceptions as described in the Registration Statement and set forth in the warrant agreement governing the Warrants); 

(iv) On the Closing Date, the Company and the Purchaser shall enter into a registration rights agreement (the “Registration Rights
Agreement”) pursuant to which the Company will grant certain registration rights to the Purchaser relating to the Private Placement Units and the underlying securities; 

(v) The undersigned will not participate in any liquidation distribution with respect to the Private Placement Units or the underlying
securities if the Company fails to consummate a Business Combination; 
 (vi) The Private Placement Units (and the underlying securities)
will include any additional terms or restrictions as is customary in other similarly structured blank check company offerings or as may be reasonably required by the underwriters in order to consummate the Public Offering, which terms or
restrictions will be described in the Registration Statement; and 
 (vii) The Warrants underlying the Private Placement Units shall be
terminated upon the dissolution of the Company or in the event that the Company does not consummate an initial Business Combination within the time period set forth in the Company’s memorandum and articles of association, as the same may be
amended from time to time. 
 D. The undersigned further acknowledges and agrees that the Private Placement Units and their component parts
and the related registration rights will be deemed compensation by the Financial Industry Regulatory Authority (“FINRA”) and will therefore, pursuant to Rule 5110(g) of the FINRA Manual, be subject to lock-up for a period of 180 days immediately following the date of effectiveness or commencement of sales in the Public Offering, subject to FINRA Rule 5110(g)(2). Additionally, the Private Placement Units and their
component parts and the related registration rights may not be sold, transferred, assigned, pledged or hypothecated or be the subject of any hedging, short sale, derivative, put or call transaction that would result in the economic disposition of
such securities by any person during the foregoing 180 day period following the effective date of the Registration Statement except to any underwriter or selected dealer participating in the IPO and the bona fide officers or partners of the
undersigned. 
 Section 2. Representations and Warranties of the Company. As a material inducement to the
Purchaser to enter into this Agreement and purchase the Private Placement Units, the Company hereby represents and warrants to the Purchaser (which representations and warranties shall survive each Closing Date) that: 

A. Incorporation and Corporate Power. The Company is an exempted company duly incorporated, validly existing and in good standing under
the laws of the Cayman Islands and is qualified to do business in every jurisdiction in which the failure to so qualify would reasonably be expected to have a material adverse effect on the financial condition, operating results or assets of the
Company. The Company possesses all requisite corporate power and authority necessary to carry out the transactions contemplated by this Agreement. 

B. Authorization; No Breach. 

(i) The execution, delivery and performance of this Agreement and the Private Placement Units (and the underlying securities) have been duly
authorized by the Company as of the Closing Date. This Agreement constitutes the valid and binding obligation of the Company, enforceable in accordance with its terms, subject to bankruptcy, insolvency, fraudulent conveyance, reorganization,
moratorium and other laws of general applicability relating to or affecting creditors’ rights and to general equitable principles (whether considered in a proceeding in equity or law). Upon issuance in accordance with, and payment pursuant to,
the terms of this Agreement, the Private Placement Units will constitute valid and binding obligations of the Company, enforceable in accordance with their terms as of each Closing Date. 

 

 (ii) The execution and delivery by the Company of this Agreement and the Private Placement
Units (and the underlying securities), the issuance and sale of the Private Placement Units (and the underlying securities), and the fulfillment of and compliance with the respective terms hereof and thereof by the Company, do not and will not as of
the Closing Date (a) conflict with or result in a breach of the terms, conditions or provisions of, (b) constitute a default under, (c) result in the creation of any lien, security interest, charge or encumbrance upon the
Company’s share capital or assets under, (d) result in a violation of, or (e) require any authorization, consent, approval, exemption or other action by or notice or declaration to, or filing with, any court or administrative or
governmental body or agency pursuant to the memorandum and articles of association of the Company (in effect on the date hereof or as may be amended prior to completion of the Public Offering) or any material law, statute, rule or regulation to
which the Company is subject, or any agreement, order, judgment or decree to which the Company is subject, except for any filings required after the date hereof under federal or state securities laws. 

C. Title to Securities. Upon issuance in accordance with, and payment pursuant to, the terms hereof and the amended and restated
memorandum and articles of association of the Company, and upon registration in the Company’s register of members, the Private Placement Units (and the underlying securities) will be duly and validly issued, fully paid and nonassessable. On the
date of issuance of the Private Placement Units, the underlying securities shall have been reserved for issuance. Upon issuance in accordance with, and payment pursuant to, the terms hereof, and upon registration in the Company’s register of
members, the Purchaser will have good title to the Private Placement Units (and the underlying securities) purchased by it, free and clear of all liens, claims and encumbrances of any kind, other than (i) transfer restrictions hereunder and
under the other agreements contemplated hereby, (ii) transfer restrictions under federal and state securities laws, and (iii) liens, claims or encumbrances imposed due to the actions of the Purchaser. 

D. Governmental Consents. No permit, consent, approval or authorization of, or declaration to or filing with, any governmental
authority is required in connection with the execution, delivery and performance by the Company of this Agreement or the consummation by the Company of any other transactions contemplated hereby. 

E. Regulation D Qualification. Neither the Company nor, to its actual knowledge, any of its affiliates, members, officers, directors or
beneficial shareholders of 20% or more of its outstanding securities, has experienced a disqualifying event as enumerated pursuant to Rule 506(d) of Regulation D under the Securities Act. 

Section 3. Representations and Warranties of the Purchaser. As a material inducement to the Company to enter into
this Agreement and issue and sell the Private Placement Units to the Purchaser, the Purchaser hereby represents and warrants to the Company (which representations and warranties shall survive each Closing Date) that: 

A. Organization and Requisite Authority. The Purchaser possesses all requisite power and authority necessary to carry out the
transactions contemplated by this Agreement. 
 B. Authorization; No Breach. 

(i) This Agreement constitutes a valid and binding obligation of the Purchaser, enforceable in accordance with its terms, subject to
bankruptcy, insolvency, fraudulent conveyance, reorganization, moratorium and other laws of general applicability relating to or affecting creditors’ rights and to general equitable principles (whether considered in a proceeding in equity or
law). 
 (ii) The execution and delivery by the Purchaser of this Agreement and the fulfillment of and compliance with the terms hereof by
the Purchaser does not and shall not as of each Closing Date (a) conflict with or result in a breach by the Purchaser of the terms, conditions or provisions of, (b) constitute a default under, (c) result in the creation of any lien,
security interest, charge or encumbrance upon the Purchaser’s equity or assets under, (d) result in a violation of, or (e) require authorization, consent, approval, exemption or other action by or notice or declaration to, or filing
with, any court or administrative or governmental body or agency pursuant to the Purchaser’s organizational documents in effect on the date hereof or as may be amended prior to completion of the contemplated Public Offering, or any material
law, statute, rule or regulation to which the Purchaser is subject, or any agreement, instrument, order, judgment or decree to which the Purchaser is subject, except for any filings required after the date hereof under federal or state securities
laws. 

 C. Investment Representations. 

(i) The Purchaser is acquiring the Private Placement Units (and the underlying securities) (collectively, the
“Securities”) for its own account, for investment purposes only and not with a view towards, or for resale in connection with, any public sale or distribution thereof. 

(ii) The Purchaser is an “accredited investor” as such term is defined in Rule 501(a)(3) of Regulation D, and the
Purchaser has not experienced a disqualifying event as enumerated pursuant to Rule 506(d) of Regulation D under the Securities Act. 
 (iii)
The Purchaser understands that the Securities are being offered and will be sold to it in reliance on specific exemptions from the registration requirements of the United States federal and state securities laws and that the Company is relying upon
the truth and accuracy of, and the Purchaser’s compliance with, the representations and warranties of the Purchaser set forth herein in order to determine the availability of such exemptions and the eligibility of the Purchaser to acquire such
Securities. 
 (iv) The Purchaser did not decide to enter into this Agreement as a result of any general solicitation or general advertising
within the meaning of Rule 502(c) of Regulation D under the Securities Act. 
 (v) The Purchaser has been furnished with all materials
relating to the business, finances and operations of the Company and materials relating to the offer and sale of the Securities which have been requested by the Purchaser. The Purchaser has been afforded the opportunity to ask questions of the
executive officers and directors of the Company. The Purchaser understands that its investment in the Securities involves a high degree of risk and it has sought such accounting, legal and tax advice as it has considered necessary to make an
informed investment decision with respect to the acquisition of the Securities. 
 (vi) The Purchaser understands that no United States
federal or state agency or any other government or governmental agency has passed on or made any recommendation or endorsement of the Securities or the fairness or suitability of the investment in the Securities by the Purchaser nor have such
authorities passed upon or endorsed the merits of the offering of the Securities. 
 (vii) The Purchaser understands that: (a) the
Securities have not been and are not being registered under the Securities Act or any state securities laws, and may not be offered for sale, sold, assigned or transferred unless (1) subsequently registered thereunder or (2) sold in
reliance on an exemption therefrom; and (b) except as specifically set forth in the Registration Rights Agreement, neither the Company nor any other person is under any obligation to register the Securities under the Securities Act or any state
securities laws or to comply with the terms and conditions of any exemption thereunder. In this regard, the Purchaser understands that the SEC has taken the position that promoters or affiliates of a blank check company and their transferees, both
before and after an initial Business Combination, are deemed to be “underwriters” under the Securities Act when reselling the securities of a blank check company. Based on that position, Rule 144 adopted pursuant to the
Securities Act would not be available for resale transactions of the Securities despite technical compliance with the requirements of such Rule, and the Securities can be resold only through a registered offering or in reliance upon another
exemption from the registration requirements of the Securities Act. The Securities will bear a legend and appropriate “stop transfer” instructions (or an appropriate notation if securities are issued in book entry form) relating to the
foregoing. The Purchaser further understands that the SEC has taken the position that promoters or affiliates of a blank check company and their transferees, both before and after an initial Business Combination, are deemed to be
“underwriters” under the Securities Act when reselling the securities of a blank check company. Based on that position, Rule 144 adopted pursuant to the Securities Act would not be available for resale transactions of the Private Placement
Units (and the underlying securities) until the 1-year anniversary following consummation of an Business Combination despite technical compliance with the requirements of Rule 144. 

 (viii) The Purchaser has such knowledge and experience in financial and business matters,
knowledge of the high degree of risk associated with investments in the securities of companies in the development stage such as the Company, is capable of evaluating the merits and risks of an investment in the Securities and is able to bear the
economic risk of an investment in the Securities in the amount contemplated hereunder for an indefinite period of time. The Purchaser has adequate means of providing for its current financial needs and contingencies and will have no current or
anticipated future needs for liquidity which would be jeopardized by the investment in the Securities. The Purchaser can afford a complete loss of its investments in the Securities. 

Section 4. Conditions of the Purchaser’s Obligations. The obligations of the Purchaser to purchase and pay for
the Private Placement Units are subject to the fulfillment, on or before each Closing Date, of each of the following conditions: 
 A.
Representations and Warranties. The representations and warranties of the Company contained in Section 2 shall be true and correct at and as of such Closing Date as though then made. 

B. Performance. The Company shall have performed and complied with all agreements, obligations and conditions contained in this
Agreement that are required to be performed or complied with by it on or before such Closing Date. 
 C. No Injunction. No
litigation, statute, rule, regulation, executive order, decree, ruling or injunction shall have been enacted, entered, promulgated or endorsed by or in any court or governmental authority of competent jurisdiction or any self-regulatory organization
having authority over the matters contemplated hereby, which prohibits the consummation of any of the transactions contemplated by this Agreement. 

D. Registration Rights Agreement. The Company shall have entered into the Registration Rights Agreement, in the form of Exhibit A
hereto, on terms satisfactory to the Purchaser. 
 Section 5. Conditions of the Company’s Obligations. The
obligations of the Company to the Purchaser under this Agreement are subject to the fulfillment, on or before each Closing Date, of each of the following conditions: 

A. Representations and Warranties. The representations and warranties of the Purchaser contained in Section 3 shall be true and
correct at and as of such Closing Date as though then made. 
 B. Performance. The Purchaser shall have performed and complied with
all agreements, obligations and conditions contained in this Agreement that are required to be performed or complied with by the Purchaser on or before such Closing Date. 

C. Corporate Consents. The Company shall have obtained the consent of its Board of Directors authorizing the execution, delivery and
performance of this Agreement and the issuance and sale of the Private Placement Units hereunder. 
 D. No Injunction. No litigation,
statute, rule, regulation, executive order, decree, ruling or injunction shall have been enacted, entered, promulgated or endorsed by or in any court or governmental authority of competent jurisdiction or any self-regulatory organization having
authority over the matters contemplated hereby, which prohibits the consummation of any of the transactions contemplated by this Agreement. 

E. Registration Rights Agreement. The Company shall have entered into the Registration Rights Agreement, in the form of Exhibit A
hereto, on terms satisfactory to the Company. 
 Section 6. Termination. This Agreement may be terminated at any
time after November 15, 2021 upon the election by either the Company or the Purchaser upon written notice to the other party if the closing of the Public Offering does not occur prior to such date. 

Section 7. Survival of Representations and Warranties. All of the representations and warranties contained herein
shall survive each Closing Date 

 Section 8. Definitions. Terms used but not otherwise defined in
this Agreement shall have the meaning assigned to such terms in the Registration Statement on Form S-1 that the Company has filed with the SEC, under the Securities Act. 

Section 9. Miscellaneous. 

A. Successors and Assigns. Except as otherwise expressly provided herein, all covenants and agreements contained in this Agreement by
or on behalf of any of the parties hereto shall bind and inure to the benefit of the respective successors of the parties hereto whether so expressed or not. Notwithstanding the foregoing or anything to the contrary herein, the parties may not
assign this Agreement, other than assignments by the Purchaser to affiliates thereof (including, without limitation one or more of its members). 

B. Severability. Whenever possible, each provision of this Agreement shall be interpreted in such manner as to be effective and valid
under applicable law, but if any provision of this Agreement is held to be prohibited by or invalid under applicable law, such provision shall be ineffective only to the extent of such prohibition or invalidity, without invalidating the remainder of
this Agreement. 
 C. Counterparts. This Agreement may be executed simultaneously in two or more counterparts, none of which need
contain the signatures of more than one party, but all such counterparts taken together shall constitute one and the same agreement. Signatures to this Agreement transmitted via facsimile or e-mail shall be
valid and effective to bind the party so signing. 
 D. Descriptive Headings; Interpretation. The descriptive headings of this
Agreement are inserted for convenience only and do not constitute a substantive part of this Agreement. The use of the word “including” in this Agreement shall be by way of example rather than by limitation. 

E. Governing Law. This Agreement shall be deemed to be a contract made under the laws of the State of New York and for all purposes
shall be construed in accordance with the internal laws of the State of New York, without giving effect to conflicts of law principles that would result in the application of the laws of another jurisdiction. 

F. Amendments. This Agreement may not be amended, modified or waived as to any particular provision, except by a written instrument
executed by the parties hereto. 
 [Signature page follows] 

 IN WITNESS WHEREOF, the parties hereto have executed this Agreement to be effective as of
the date first set forth above. 
  

			
	COMPANY:
	
	BLOCKCHAIN COINVESTORS ACQUISITION CORP. I
		
	 By:
	 	/s/ Lou Kerner
		 	Name: Lou Kerner
		 	Title: Chief Executive Officer

  

			
	PURCHASER:
	
	BLOCKCHAIN COINVESTORS ACQUISITION SPONSORS I LLC
		
	 By:
	 	/s/ Matthew C. Le Merle
		 	Name: Matthew C. Le Merle
		 	Title: Manager

  
 SIGNATURE PAGE TO PRIVATE
PLACEMENT UNITS PURCHASE AGREEMENT 

 EXHIBIT A 

Registration Rights AgreementEX-10.4

 Exhibit 10.4 

BLOCKCHAIN COINVESTORS ACQUISITION CORP. I 

November 9, 2021 
 Blockchain Coinvestors
Acquisition Sponsors I LLC 
 Ladies and Gentlemen: 

This letter will confirm our agreement that, commencing on the date the securities of Blockchain Coinvestors Acquisition Corp. I (the
“Company”) are first listed on Nasdaq (the “Listing Date”) and continuing until the earlier of (i) the consummation by the Company of an initial business combination and (ii) the
Company’s liquidation (in each case as described in the registration statement for the initial public offering of the Company’s securities (the “IPO”) (such earlier date hereinafter referred to as the
“Termination Date”), Blockchain Coinvestors Acquisition Sponsors I LLC (the “Provider”) shall take steps directly or indirectly to make available to the Company certain office space, secretarial and
administrative services as may be required by the Company from time to time, situated at PO Box 1093, Boundary Hall, Cricket Square, Grand Cayman, KY1-1102, Cayman Islands (or any successor location). In
exchange therefore, the Company shall pay the Provider a sum of $15,000 per month commencing on the Effective Date and continuing monthly thereafter until the Termination Date. The Provider hereby agrees that it does not have any right, title,
interest or claim of any kind (a “Claim”) in or to any monies that may be set aside in a trust account (the “Trust Account”) that may be established in connection with and upon the consummation of the
IPO and hereby irrevocably waives any Claim it may have in the future as a result of, or arising out of, any negotiations, contracts or agreements with the Company and will not seek recourse, reimbursement, payment or satisfaction of any Claim
against the Trust Account or any monies or other assets in the Trust Account for any reason whatsoever. 
 This letter agreement constitutes
the entire agreement and understanding of the parties hereto in respect of its subject matter and supersedes all prior understandings, agreements, or representations by or among the parties hereto, written or oral, to the extent they relate in any
way to the subject matter hereof or the transactions contemplated hereby. 
 This letter agreement may not be amended, modified or waived as
to any particular provision, except by a written instrument executed by the parties hereto. 
 The parties may not assign this letter
agreement and any of their rights, interests, or obligations hereunder without the consent of the other party. Any purported assignment in violation of this paragraph shall be void and ineffectual and shall not operate to transfer or assign any
interest or title to the purported assignee. 
 This letter agreement shall be governed by, construed in accordance with, and interpreted
pursuant to the laws of the State of New York, without giving effect to its choice of laws principles that will apply the laws of another jurisdiction. 

This letter agreement may be executed in one or more counterparts, each of which shall for all purposes be deemed to be an original but all of
which together shall constitute one and the same agreement. Only one such counterpart signed by the party against whom enforceability is sought needs to be produced to evidence the existence of this letter agreement. 

[Signature Page Follows] 

 
			
	Very truly yours,
	
	BLOCKCHAIN COINVESTORS ACQUISITION CORP. I
		
	 By:
	 	/s/ Lou Kerner
	 Name:
	 	Lou Kerner
	 Title:
	 	Chief Executive Officer

  

			
	AGREED TO AND ACCEPTED BY:
	
	BLOCKCHAIN COINVESTORS ACQUISITION SPONSORS I LLC
		
	 By:
	 	/s/ Matthew C. Le Merle
	 Name:
	 	Matthew C. Le Merle
	 Title:
	 	Authorized Signatory

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