FORM OF LOCK-UP AGREEMENT]

Exhibit 6.16

[FORM OF LOCK-UP AGREEMENT]

Network 1 Financial Securities, Inc.

The Galleria, Penthouse

0 Xxxxxx Xxxxxx, Xxxxxxxx 0

Xxx Xxxx, XX 00000

Re: Prometheum, Inc. – Form 1-A (File No. 024-10960)

Ladies and Gentlemen:

The undersigned understands that Network 1 Financial Securities, Inc. (the “Representative”) proposes to enter into an Underwriting Agreement (the “Underwriting Agreement”) with Prometheum, Inc., a Delaware corporation (the “Company”), providing for the public offering (the “Public Offering”) of shares of common stock, par value $0.00001 per share (the “Common Stock”), of the Company. The shares of Common Stock sold in the Public Offering are hereinafter referred to as the “Securities”.

To induce the Representative to continue its efforts in connection with the Public Offering, the undersigned hereby agrees that, without the prior written consent of the Representative, the undersigned will not do any market transactions in the United States or its territories (subject to the delivery requirements below), during the period commencing on the date of the Underwriting Agreement and ending 180 days after such date (the “Lock-Up Period”), (1) offer, pledge, sell, contract to sell, grant, lend, or otherwise transfer or dispose of, directly or indirectly, any shares of Common Stock or any securities convertible into or exercisable or exchangeable for shares of Common Stock, whether now owned or hereafter acquired by the undersigned or with respect to which the undersigned has or hereafter acquires the power of disposition (collectively, the “Lock-Up Securities”); (2) enter into any swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of the Lock-Up Securities, whether any such transaction described in clause (1) or (2) above is to be settled by delivery of Lock-Up Securities, in cash or otherwise; (3) make any demand for or exercise any right with respect to the registration of any Lock-Up Securities; or (4) publicly disclose the intention to make any offer, sale, pledge or disposition, or to enter into any transaction, swap, hedge or other arrangement relating to any Lock-Up Securities. Notwithstanding the foregoing, and subject to the conditions below, the undersigned may transfer Lock-Up Securities without the prior written consent of the Representative in connection with (a) transactions relating to Lock-Up Securities acquired in open market transactions after the completion of the Public Offering; provided that no filing under Section 16(a) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), shall be required or shall be voluntarily made in connection with subsequent sales of Lock-Up Securities acquired in such open market transactions; (b) transfers of Lock-Up Securities (i) as a bona fide gift, by will or intestacy, (ii) by operation of law, such as pursuant to a qualified domestic order or as required by a divorce settlement, or (iii) to a family member or trust for the benefit of a family member (for purposes of this lock-up agreement, “family member” means any relationship by blood, marriage or adoption, not more remote than first cousin); (c) transfers of Lock-Up Securities to a charity or educational institution; or (d) if the undersigned, directly or indirectly, controls a corporation, partnership, limited liability company or other entity, any transfers of Lock-Up Securities to any shareholder, partner or member of, or owner of similar equity interests in, the undersigned, as the case may be; provided that in the case of any transfer of any Lock-Up Securities pursuant to the foregoing clauses (b), (c) or (d), (i) any such transfer shall not involve a disposition for value, (ii) each transferee shall sign and deliver to the Representative a lock-up agreement substantially in the form of this lock-up agreement and (ii) no filing under Section 16(a) of the Exchange Act shall be required or shall be voluntarily made. Notwithstanding anything contained herein to the contrary, the undersigned acknowledge and agrees that in the event the undersigned sells or transfer any Lock-up Securities in one or a series of non-market transactions outside of the United States and its territories, the transferee(s) or purchaser(s), as the case may be, shall sign and deliver to the Representative a lock-up agreement for the transferred or purchased Lock-Up Securities, substantially in the form of this lock-up agreement. The undersigned also agrees and consents to the entry of stop transfer instructions with the Company’s transfer agent and registrar against the transfer of the undersigned’s Lock-Up Securities except in compliance with this lock-up agreement.

If the undersigned is an officer or director of the Company, (i) the undersigned agrees that the foregoing restrictions shall be equally applicable to any Securities that the undersigned may purchase in the Public Offering; (ii) the Representative agrees that, at least three (3) business days before the effective date of any release or waiver of the foregoing restrictions in connection with a transfer of Lock-Up Securities, the Representative will notify the Company of the impending release or waiver; and (iii) the Company has agreed in the Underwriting Agreement to announce the impending release or waiver by press release through a major news service at least two (2) business days before the effective date of the release or waiver. Any release or waiver granted by the Representative hereunder to any such officer or director shall only be effective two (2) business days after the publication date of such press release. The provisions of this paragraph will not apply if (a) the release or waiver is effected solely to permit a transfer of Lock-Up Securities not for consideration and (b) the transferee has agreed in writing to be bound by the same terms described in this lock-up agreement to the extent and for the duration that such terms remain in effect at the time of such transfer.

No provision in this lock-up agreement shall be deemed to restrict or prohibit the exercise, exchange or conversion by the undersigned of any securities exercisable or exchangeable for or convertible into shares of Common Stock, as applicable; provided that the undersigned does not transfer the shares of Common Stock acquired on such exercise, exchange or conversion during the Lock-Up Period, unless otherwise permitted pursuant to the terms of this lock-up agreement. In addition, no provision herein shall be deemed to restrict or prohibit the entry into or modification of a so-called “10b5-1” plan at any time other than the entry into or modification of such a plan in such a manner as to prevent the sale of any Lock-Up Securities within the Lock-Up Period.

The undersigned understands that the Company and the Representative are relying upon this lock-up agreement in proceeding toward consummation of the Public Offering. The undersigned further understands that this lock-up agreement is irrevocable and shall be binding upon the undersigned’s heirs, legal representatives, successors and assigns.

The undersigned understands that, if the Underwriting Agreement is not executed by [________], 2021 or if the Underwriting Agreement (other than the provisions thereof which survive termination) shall terminate or be terminated prior to payment for and delivery of the Securities to be sold thereunder, then this lock-up agreement shall be void and of no further force or effect.

Whether or not the Public Offering actually occurs depends on a number of factors, including market conditions. The Public Offering pursuant to which this Lock-Up Agreement applies, will only be made pursuant to the Underwriting Agreement, the terms of which are subject to negotiation between the Company and the Representative.

[SIGNATURE PAGE FOLLOWS]

Very Truly Yours,

Name – Please Print

Signature

Name of Signatory, in the case of entities – Please Print

Title of Signatory, in case of entities – Please Print

Address:

Date Signed