BlockchAIn Digital Infrastructure, Inc.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

Check the appropriate box:

(Name of Registrant As Specified In Charter)

Payment of Filing Fee (Check the appropriate box):

NOTICE OF ANNUAL MEETING OF STOCKHOLDERS

TO BE HELD ON JUNE 16, 2026

April 29, 2026

To Our Stockholders:

You are cordially invited to attend our 2026 Annual Meeting of Stockholders of BlockchAIn Digital Infrastructure, Inc., which will be held at 2 p.m. (Eastern Daylight time) on June 16, 2026. The Annual Meeting will be a completely virtual meeting and will be conducted via live webcast on the Internet, providing a consistent experience for all stockholders regardless of location.

You will be able to register to attend the meeting, starting on April 17, 2026 (the “Record Date”), and attend the meeting, by logging in to the following webcast and following the instructions at: https://stctransfer.zoom.us/webinar/register/WN_6P10Hp-dQYu4-GKFgiDODQ

If you are a stockholder of record, you will be able to vote your shares electronically during the Annual Meeting by logging into and following the instructions athttps://onlineproxyvote.com/AIB/2026. If your shares are held in a brokerage account, by a bank, by a trustee, or by another nominee, please follow the voting instructions provided by your broker or other nominee. Most brokers or other nominees permit their customers to vote by telephone or by Internet, in addition to voting by signing, dating, and returning the voting instruction form in the postage-paid envelope provided.

The Annual Meeting will be held for the purpose of considering and voting on the following proposals:

1. To elect two directors to serve as Class I directors on our Board of Directors for a term of three years or until their successors are duly elected and qualified, for which the following are nominees: Daniel Nelson and Hongfei Zhang;

2. To ratify the appointment of Carr, Riggs & Ingram, L.L.C. as our independent registered public accounting firm for the fiscal years ending December 31, 2025 and 2026; and

3. To consider and transact such other business as may properly come before the meeting or any postponement or adjournment thereof.

Only stockholders of record at the close of business on April 17, 2026 are entitled to notice of, and to vote at, the Annual Meeting.

Please read the Proxy Statement and vote your shares as soon as possible. Your vote is very important. Please complete, sign, date and return the accompanying proxy card, or follow the instructions on the card for voting by the Internet.

By Order of the Board of Directors,

/s/ Jerry Tang

Jerry Tang

Chairman, Chief Executive Officer and President

IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS FOR THE

STOCKHOLDER MEETING TO BE HELD ON JUNE 16, 2026

This Notice, the accompanying Proxy Statement for the 2026 Annual Meeting of Stockholders and the Company’s Annual Report on Form 10-K for the year ended December 31, 2025 are first being mailed and made available onhttps://onlineproxyvote.com/AIB/2026, on or about May 5, 2026.