# EDGAR Filing Document

**Accession Number:** 0002070542
**File Stem:** 0001213900-26-032969
**Filing Date:** 2026-3
**Character Count:** 19362
**Document Hash:** fdb09027ca6e7f2991de8a499137ca5d
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-26-032969.hdr.sgml**: 20260323

**ACCESSION NUMBER**: 0001213900-26-032969

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20260323

**DATE AS OF CHANGE**: 20260323

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** BlockchAIn Digital Infrastructure, Inc.
- **CENTRAL INDEX KEY:** 0002070542
- **STANDARD INDUSTRIAL CLASSIFICATION:** [6221]
- **ORGANIZATION NAME:** 09 Crypto Assets
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-95576
- **FILM NUMBER:** 26782937

**BUSINESS ADDRESS:**
- **STREET 1:** 1540 BROADWAY, SUITE 1010
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10036
- **BUSINESS PHONE:** 917-558-3563

**MAIL ADDRESS:**
- **STREET 1:** 1540 BROADWAY, SUITE 1010
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10036
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Tiger Cloud LLC
- **CENTRAL INDEX KEY:** 0002116471

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D

**BUSINESS ADDRESS:**
- **STREET 1:** 1540 BROADWAY, STE 1010
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10036
- **BUSINESS PHONE:** (917) 558-3563

**MAIL ADDRESS:**
- **STREET 1:** 1540 BROADWAY, STE 1010
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10036

## Exhibit 99.1

**Exhibit 99.1**

**JOINT FILING AGREEMENT**

The undersigned hereby agree that they are filing this statement jointly pursuant to Rule 13d-1(k)(1). Each of them is responsible for the timely filing of such Schedule 13D and any amendments thereto, and for the completeness and accuracy of the information concerning such person contained therein; but none of them is responsible for the completeness or accuracy of the information concerning the other persons making the filing, unless such person knows or has reason to believe that such information is inaccurate.

In accordance with Rule 13d-1(k)(1) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with each other on behalf of each of them of such a statement on Schedule 13D with respect to the common shares of BlockchAIn Digital Infrastructure, Inc. beneficially owned by each of them. This Joint Filing Agreement shall be included as an exhibit to such Schedule 13D.

IN WITNESS WHEREOF, the undersigned hereby execute this Joint Filing Agreement as of the 23<sup>rd</sup> day of March, 2026.

---

| | |
|:---|:---|
| TIGER CLOUD LLC | TIGER CLOUD LLC |
| By: | /s/ Jerry Tang |
| Name: | Jerry Tang |
| Title: | Managing Member |
| VCV DIGITAL SOLUTIONS LLC | VCV DIGITAL SOLUTIONS LLC |
| By: | /s/ Jerry Tang |
| Name: | Jerry Tang |
| Title: | Managing Member |
| JERRY TANG | JERRY TANG |
| Signature: | /s/ Jerry Tang |
|  | (in personal capacity) |

---

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**BlockchAIn Digital Infrastructure, Inc.**

*(Name of Issuer)*

**Common Stock, par value $0.0001 per share**

*(Title of Class of Securities)*

**—**

*(CUSIP Number)*

**Tahra Wright, Esq.**<br>Loeb & Loeb LLP<br>345 Park Avenue<br>New York NY 10154<br>(212) 407-4000

*(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)*

**03/16/2026**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Tiger Cloud LLC** | Name of reporting person<br>**Tiger Cloud LLC** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**15100970.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**15100970.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**0.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**15100970.00** | Aggregate amount beneficially owned by each reporting person<br>**15100970.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**40.1%** | Percent of class represented by amount in Row (11)<br>**40.1%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** (1) In connection with the consummation of the transactions (the "Business Combination") contemplated by the Business Combination Agreement, dated as of May 27, 2025, (as amended, the "Business Combination Agreement"), by and among BlockchAIn Digital Infrastructure, Inc. (the "Issuer"), Signing Day Sports, Inc., BCDI Merger Sub I Inc., BCDI Merger Sub II LLC, and One Blockchain LLC ("One Blockchain"), the Issuer completed the Business Combination.

As a securityholder of One Blockchain, Tiger Cloud LLC was issued 15,100,970 shares of common stock, par value $0.0001 per share, of the Issuer ("Common Stock") upon the consummation of the Business Combination. Jerry Tang, as managing member of Tiger Cloud LLC, has voting and dispositive power over the securities owned by Tiger Cloud LLC. No additional cash consideration was paid by Tiger Cloud LLC for the shares reported herein.

(2) Percentage is calculated based on 37,629,068 shares of Common Stock outstanding upon consummation of the Business Combination on March 16, 2026.

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**VCV Digital Solutions LLC** | Name of reporting person<br>**VCV Digital Solutions LLC** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**11196244.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**11196244.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**0.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**11196244.00** | Aggregate amount beneficially owned by each reporting person<br>**11196244.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**29.8%** | Percent of class represented by amount in Row (11)<br>**29.8%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** (1) As a securityholder of One Blockchain, VCV Digital Solutions LLC was issued 11,196,244 shares of Common Stock upon the consummation of the Business Combination. Jerry Tang, as managing member of VCV Digital Solutions LLC, has voting and dispositive power over the securities owned by VCV Digital Solutions LLC. No additional cash consideration was paid by VCV Digital Solutions LLC for the shares reported herein.

(2) Percentage is calculated based on 37,629,068 shares of Common Stock outstanding upon consummation of the Business Combination on March 16, 2026.

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Jerry Tang** | Name of reporting person<br>**Jerry Tang** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**X1** | Citizenship or place of organization<br>**X1** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**26297214.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**26297214.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**0.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**26297214.00** | Aggregate amount beneficially owned by each reporting person<br>**26297214.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**69.9%** | Percent of class represented by amount in Row (11)<br>**69.9%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Comment for Reporting Person:** Mr. Tang serves as a Chief Executive Officer and Chairman of the Issuer. As managing member of Tiger Cloud LLC and VCV Digital Solutions LLC, Mr. Tang may be deemed to beneficially own the shares held by these entities.

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Common Stock, par value $0.0001 per share

**(b) Name of Issuer:**
BlockchAIn Digital Infrastructure, Inc.

**(c) Address of Issuer's Principal Executive Offices:**
1540 Broadway, Ste 1010, New York, NY, 10036

**Item 4. Purpose of Transaction**

On March 16, 2026, in connection with the consummation of the transactions (the "Business Combination") contemplated by the Business Combination Agreement, dated as of May 27, 2025, (as amended, the "Business Combination Agreement"), by and among BlockchAIn Digital Infrastructure, Inc. (the "Issuer"), Signing Day Sports, Inc., BCDI Merger Sub I Inc., BCDI Merger Sub II LLC, and One Blockchain LLC ("One Blockchain"), the Issuer completed the Business Combination and filed an amended and restated certificate of incorporation. Pursuant to the Business Combination Agreement, BCDI Merger Sub II LLC, a wholly-owned subsidiary of the Issuer, merged with and into One Blockchain, with One Blockchain surviving as a wholly-owned subsidiary of the Issuer (the "One Blockchain Merger"). The securityholders of One Blockchain received shares of Common Stock as part of the Business Combination.

In connection with the One Blockchain Merger, the membership interests of One Blockchain outstanding prior to the Business Combination were automatically cancelled in exchange for the right of the holders thereof to receive the number of the Issuer's common shares as described in the Business Combination Agreement. Immediately prior to the One Blockchain Merger, Tiger Cloud was the owner of approximately 33.7% of the One Blockchain membership interests and VCV Digital was the owner of approximately 45.4% of the One Blockchain membership interests. As a result, following the Business Combination, Tiger Cloud received 15,100,970 shares of Common Stock and VCV Digital received 11,196,244 shares of Common Stock.

The Reporting Persons continuously assess the Issuer's business, financial condition, results of operations and prospects, general economic conditions, other developments and additional investment opportunities. Depending on such assessments, and subject to any restrictions described herein, the Reporting Persons may acquire additional securities of the Issuer or new securities of the Issuer or may determine to purchase, sell or otherwise dispose of all or some of the Issuer's securities beneficially owned by the Reporting Persons in the open market, as applicable, in privately negotiated transactions, in transactions directly with the Issuer or otherwise. Such actions will depend upon a variety of factors, including, without limitation, current and anticipated future trading prices, the financial condition, results of operations and prospects of the Issuer, alternative investment opportunities, general economic, financial market and industry conditions and other factors that the Reporting Persons may deem material to their investment decision.

**Item 5. Interest in Securities of the Issuer**

**(a)**
As of March 16, 2026, Tiger Cloud directly owned 15,100,970 shares of Common Stock and VCV Digital directly owned 11,196,244 shares of Common Stock. Mr. Tang, as managing member of Tiger Cloud and VCV Digital, may be deemed to beneficially own the shares owned by Tiger Cloud and VCV Digital.

The shares owned by Tiger Cloud represent approximately 40.1% of the 37,629,068 shares of Common Stock outstanding upon consummation of the Business Combination. The shares owned by VCV Digital represent approximately 29.8% of the 37,629,068 shares of Common Stock outstanding upon consummation of the Business Combination. Mr. Tang, as the managing member of Tiger Cloud and VCV Digital, may be deemed to beneficially own an aggregate of 26,297,214 shares of Common Stock, representing approximately 69.9% of the 37,629,068 shares of Common Stock outstanding upon consummation of the Business Combination.

**(b)**
As of March 16, 2026, Tiger Cloud directly owned 15,100,970 shares of Common Stock and VCV Digital directly owned 11,196,244 shares of Common Stock. Mr. Tang, as managing member of Tiger Cloud and VCV Digital, has sole voting and dispositive power over the shares held by each of Tiger Cloud and VCV Digital and may be deemed to beneficially own the shares owned by Tiger Cloud and VCV Digital.

**(c)**
Information with respect to all transactions in the shares of Common Stock beneficially owned by the Reporting Persons that were effected during the past sixty days is set forth in Item 4 and 6 is incorporated herein by reference.

**Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.**

The responses to Items 3, 4 and 5 are incorporated by reference into Item 6.

Joint Filing Agreement

Pursuant to Rule 13d-1(k) promulgated under the Exchange Act, the Reporting Persons have entered into a Joint Filing Agreement, a copy of which is filed hereto as Exhibit 99.1, with respect to the joint filing of this Schedule 13D and any amendment or amendments thereto.

Business Combination Agreement

On March 16, 2026, the Issuer consummated the Business Combination contemplated by the Business Combination Agreement, dated as of May 27, 2025, (as amended and as may be amended, supplemented or otherwise modified from time to time, the "Business Combination Agreement"), by and among BlockchAIn Digital Infrastructure, Inc. (the "Issuer"), Signing Day Sports, Inc., BCDI Merger Sub I Inc., BCDI Merger Sub II LLC, and One Blockchain LLC ("One BlockChain"). Pursuant to the Business Combination Agreement, the securityholders of One Blockchain received shares of the Issuer's Common Stock as part of the Business Combination. The description of the Business Combination Agreement is qualified in its entirety by reference to the full text of such agreement, a copy of which is filed as Exhibit 99.2 hereto.

Lock-Up/Leak-Out Agreements

In connection with the consummation of the Business Combination, certain stockholders of Signing Day Sports and certain equity holders of One Blockchain (collectively, the "Lock-Up Parties") entered into Lock-Up/Leakout Agreements (the "Lock-Up Agreements") with the Issuer.

Pursuant to the Lock-Up agreements, subject to certain exceptions, the Lock-Up Parties, owning approximately 70.1% of the Issuer's common shares after the Closing, agreed not to sell, transfer, pledge or otherwise dispose the Issuer's common shares received in connection with the Business Combination for a period of 6 months following the Closing Date. Despite the transfer restrictions, a holder may transfer up to 25% of their restricted securities without restriction if, after the Closing Date, the Issuer's common shares on NYSE American trade at or above $9.375 per share (subject to adjustment for stock splits and similar events) for at least 20 out of any 30 consecutive trading days.

The description of the Lock-Up Agreement is qualified in its entirety by reference to the full text of such agreement, a form of which is filed as Exhibit 99.3 hereto.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Tiger Cloud LLC

**Signature:** /s/ Jerry Tang

**Name/Title:** Jerry Tang/Managing Member

**Date:** 03/23/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** VCV Digital Solutions LLC

**Signature:** /s/ Jerry Tang

**Name/Title:** Jerry Tang/Managing Member

**Date:** 03/23/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Jerry Tang

**Signature:** /s/ Jerry Tang

**Name/Title:** Jerry Tang

**Date:** 03/23/2026