0001213900-26-067320 Sample Contracts

REPRESENTATIVE COMMON STOCK PURCHASE WARRANT BLOCKCHAIN DIGITAL INFRASTRUCTURE, INC.
Representative Common Stock Purchase Warrant • June 10th, 2026 • BlockchAIn Digital Infrastructure, Inc. • Commodity contracts brokers & dealers • New York

THIS REPRESENTATIVE COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, [___________] or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any time on or after the date hereof (the “Initial Exercise Date”) and on or prior to 5:00 p.m. (New York City time) on June 5, 2031 (the “Termination Date”) but not thereafter, to subscribe for and purchase from BlockchAIn Digital Infrastructure, Inc., a Delaware corporation (the “Company”), up to [______] shares (as subject to adjustment hereunder, the “Warrant Shares”) of Common Stock. The purchase price of one share of Common Stock under this Warrant shall be equal to the Exercise Price, as defined in Section 2(b). This Warrant is being issued pursuant to the Underwriting Agreement.

UNDERWRITING AGREEMENT
Underwriting Agreement • June 10th, 2026 • BlockchAIn Digital Infrastructure, Inc. • Commodity contracts brokers & dealers • New York

The undersigned, BlockchAIn Digital Infrastructure, Inc., a company incorporated under the laws of Delaware (collectively with its subsidiaries and affiliates, including, without limitation, all entities disclosed or described in the Registration Statement as being subsidiaries or affiliates of BlockchAIn Digital Infrastructure, Inc., the “Company”), hereby confirms its agreement (this “Agreement”) with the several underwriters (such underwriters, including the Representative (as defined below), the “Underwriters” and each an “Underwriter”) named in Schedule I hereto for which Lucid Capital Markets, LLC is acting as representative to the several Underwriters (the “Representative” and if there are no Underwriters other than the Representative, references to multiple Underwriters shall be disregarded and the term Representative as used herein shall have the same meaning as Underwriter) on the terms and conditions set forth herein.

LOCK-UP AGREEMENT
Lock-Up Agreement • June 10th, 2026 • BlockchAIn Digital Infrastructure, Inc. • Commodity contracts brokers & dealers

Re: Underwriting Agreement, dated June 5, 2026 (the “Underwriting Agreement”), by and between BlockchAIn Digital Infrastructure, Inc. (the “Company”) and Lucid Capital Markets, LLC, (the “Representative”) acting as representative to the several underwriters (collectively, the “Underwriters”).