Exhibit 3.1

FRANCISCO V. AGUILAR Secretary of State 401 North Carson Street Carson City, Nevada 89701 - 4201 (775) 684 - 5708 Website: www.nvsos.gov Profit Corporation: Certificate of Amendment (PURSUANT TO NRS 78.380 & 78.385/78.390) Certificate to Accompany Restated Articles or Amended and Restated Articles (PURSUANT TO NRS 78.403) Officer's Statement (PURSUANT TO NRS 80.030) TYPE OR PRINT - USE DARK INK ONLY - DO NOT HIGHLIGHT Name of entity as on file with the Nevada Secretary of State: DatChat, Inc. Entity or Nevada Business Identification Number (NVID): NV20141741302 1. Entity information: Certificate to Accompany Restated Articles or Amended and Restated Articles Restated Articles - No amendments; articles are restated only and are signed by an officer of the corporation who has been authorized to execute the certificate by resolution of the board of directors adopted on: The certificate correctly sets forth the text of the articles or certificate as amended to the date of the certificate. Amended and Restated Articles * Restated or Amended and Restated Articles must be included with this filing type. 2. Restated or Amended and Restated Articles: (Select one) (lf amending and restating only , complete section 1,2 3, 5 and 6) Certificate of Amendment to Articles of lncorporation (Pursuant to NRS 78.380 - Before lssuance of Stock) The undersigned declare that they constitute at least two - thirds of the following: (Check only one box) incorporators board of directors The undersigned affirmatively declare that to the date of this certificate, no stock of the corporation has been issued 3. Type of Amendment Filing Being Completed: (Select only one box) (lf amending, complete section 1, 3, 5 and 6.) Certificate of Amendment to Articles of lncorporation (Pursuant to NRS 78.385 and 78.390 - After lssuance of Stock) The vote by which the stockholders holding shares in the corporation entitling them to exercise at least a majority of the voting power, or such greater proportion of the voting power as may be required in the case of a vote by classes or series, or as may be required by the provisions of the articles of incorporation* have voted in favor of the amendment is: Or No action by stockholders is required, name change only. Officer's Statement (foreign qualified entities only) - Name in home state, if using a modified name in Nevada: Jurisdiction of formation: Changes to takes the following effect: The entity name has been amended. Dissolution The purpose of the entity has been amended. Merger The authorized shares have been amended. Conversion Other: (specify changes) * Officer's Statement must be submitted with either a certified copy of or a certificate evidencing the filing of any document, amendatory or otherwise, relating to the original articles in the place of the corporations creation. This form must be accompanied by appropriate fees.

Page 1 of 2 Revised: 9/1/2023 NV011 - 11/1/2023 Wolters Kluwer Online FRANCISCO V. AGUILAR Secretary of State 401 North Carson Street Carson City, Nevada 89701 - 4201 (775) 684 - 5708 Website: www.nvsos.gov 4 T 5 C c 6 ( Profit Corporation: Certificate of Amendment (PURSUANT TO NRS 78.380 & 78.385/78.390) Certificate to Accompany Restated Articles or Amended and Restated Articles (PURSUANT TO NRS 78.403) Officer's Statement (PURSUANT TO NRS 80.030) Date: 08/07/2025 Time: (must not be later than 90 days after the certificate is filed) . Effective Date and ime: (Optional) Changes to takes the following effect: The entity name has been amended. The registered agent has been changed. (attach Certificate of Acceptance from new registered agent) The purpose of the entity has been amended. The authorized shares have been amended. The directors, managers or general partners have been amended. lRS tax language has been added. Articles have been added. Articles have been deleted. Other. The articles have been amended as follows: (provide article numbers, if available) ARTICLE I - NAME: The name of the corporation is Myseum, Inc. (attach additional page(s) if necessary) . Information Being hanged: (Domestic orporations only) X / s/ Darin Myman Chief Executive Officer Signature of Officer or Authorized Signer Title X Signature of Officer or Authorized Signer Title *lf any proposed amendment would alter or change any preference or any relative or other right given to any class or series of outstanding shares, then the amendment must be approved by the vote, in addition to the affirmative vote otherwise required, of the holders of shares representing a majority of the voting power of each class or series affected by the amendment regardless to limitations or restrictions on the voting power thereof. . Signature: Required) Please include any required or optional information in space below: (attach additional page(s) if necessary) This form must be accompanied by appropriate fees. Page 2 of 2 Revised: 9/1/2023 NV011 - 11/1/2023 Wolters Kluwer Online

Exhibit 99.1

DatChat Rebrands to Myseum, Inc. to Align with Primary Strategic Focus on Social Group Media Sharing and Content Preservation

Myseum, Inc.’s common stock and Series A warrants to begin trading on Nasdaq under the new trading symbols “MYSE” and “MYSEW”, respectively, effective August 11, 2025

Social group media sharing platform upgrade will make it easier to share and preserve photos and videos now and with future generations

NEW BRUNSWICK, N.J., August 8, 2025 / -- DatChat, Inc. (Nasdaq: DATS) (“DatChat” or the “Company”), a security- and privacy-first social media and technology company, today announced a rebranding to the new company name “Myseum, Inc.” The Company’s common stock and Series A warrants, currently listed on the Nasdaq Capital Market, will begin trading under the new stock symbols “MYSE” and “MYSEW”, respectively, effective before the stock market open on Monday, August 11, 2025.

The new corporate identity aligns with the Company’s primary strategic focus on its Myseum social media platform, a private and secure digital content management and storage solution for families, groups and individuals. The DatChat messaging platform will continue to operate as a privacy-first messaging platform featuring encryption, screenshot prevention and message control after sending. Its unique privacy technology is integrated into the Myseum platform.

Launched by DatChat in March 2025, Myseum is a multi-tiered social media platform designed for secure and private digital content sharing and storage. It empowers users to build and share their digital legacy—both now and for future generations—through a secure, private ecosystem. Powered by proprietary electronic content management and sharing technology, Myseum offers individuals, families and groups a multi-layered platform to store and share messages, photos, videos, and documents within a protected digital family library.

Following the corporate rebranding, an upcoming Myseum platform upgrade will deliver advanced features that will make it easier and more fun to share photos and videos.

“We are in a unique position to introduce to the world this fall a new form of social networking that should become an important part of daily life,” said Darin Myman, Chief Executive Officer of DatChat. “We are excited to bring to market a new technology that has the potential to be a viral success quickly. The new features on the Myseum platform will make it easier and more fun to share family and group photos, videos and posts. Additionally, our proprietary patented technology and AI will make saving and organizing private media much easier.”

About Myseum, Inc.

Myseum, Inc. (formerly DatChat Inc.) is a security- and privacy-first social media and technology company focused on innovative and creative user platforms. Its flagship platform is Myseum, your Free Timeless Digital Shoebox Social Network that makes it easier to share your photos and videos both today, and for generations to come. Myseum allows you to create amazing albums, create special encrypted galleries with limited access, personalize your newsfeed and create collections from other Myseum’s in your Galaxy. Your Free Myseum includes 50 GB of Free Timeless Storage, and many more features not mentioned. Additional storage is available for a one-time charge of $29.95 per 50 GB of Forever Storage. Myseum is currently available for both iOS and Android, with a desktop version planned for later this year.

Myseum’s innovative social media platform brings a fresh and needed approach to digital media and content management, allowing users to create a digital legacy that makes it easier to share both today, and with future generations. Backed by patented technology and proprietary software, the multi-tiered social media ecosystem enables individuals, families, and other groups to store and share digital content such as messages, photos, videos, and documents within a highly secure and private family library.

The Company also operates the DatChat Messenger & Private Social Network, which presents technology that allows users to change how long their messages can be viewed before or after users send them, prevents screenshots, and hides encrypted photos in plain sight on camera rolls. The patented technology offers users a traditional texting experience while providing control and security for their messages. With the DatChat Messenger, a user can decide how long their messages last on a recipient’s device while feeling secure that at any time, and delete individual messages or entire message threads, making it like the conversation never happened.

Notice Regarding Forward-Looking Statements

The information contained herein includes forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended, and Section 27A of the Securities Act of 1933, as amended. Forward-looking statements generally include statements that are predictive in nature and depend upon or refer to future events or conditions, and include words such as “may,” “will,” “should,” “would,” “expect,” “plan,” “believe,” “intend,” “look forward,” and other similar expressions among others. These statements relate to future events or to the Company’s future financial performance, and involve known and unknown risks, uncertainties and other factors that may cause the Company’s actual results to be materially different from any future results, levels of activity, performance or achievements expressed or implied by these forward-looking statements. You should not place undue reliance on forward-looking statements since they involve known and unknown risks, uncertainties and other factors which are, in some cases, beyond the Company’s control and which could, and likely will, materially affect actual results, levels of activity, performance or achievements. Any forward-looking statement reflects the Company’s current views with respect to future events and is subject to these and other risks, uncertainties and assumptions relating to the Company’s operations, results of operations, growth strategy and liquidity. More detailed information about the Company and the risk factors that may affect the realization of forward-looking statements is set forth in the Company’s most recent Annual Report on Form 10-K and other filings with the Securities and Exchange Commission. Investors and security holders are urged to read these documents free of charge on the SEC’s website at http://www.sec.gov. Except as may be required by applicable law, The Company assumes no obligation to publicly update or revise these forward-looking statements for any reason, or to update the reasons actual results could differ materially from those anticipated in these forward-looking statements, whether as a result of new information, future events or otherwise.

Investor Contact

ir@datchats.com

800-658-8081