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: Myseum, 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: 04/15/2026 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.AI, 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

Myseum Rebrands as Myseum.AI to Align with Full Suite of Technology and Social Media Platforms

Company developing privacy-first agentic platform for social media

NEW BRUNSWICK, N.J., April 15, 2026 -- Myseum, Inc. (Nasdaq: MYSE) (“Myseum” or the “Company”), a privacy-first social media and technology innovator, today announced that it will operate under the new name Myseum.AI, Inc. effective April 15, 2026. The rebrand illuminates the Company’s core technology platform that will integrate proprietary privacy-first artificial intelligence (AI) into its secure messaging and social media platforms. The Company is developing privacy-first agentic localized AI agents that assist in managing personal media such as photos, videos and messages, while maintaining privacy. The technology adapts to individual patterns and preferences to better assist the user while maintaining data integrity and encryption to ensure that user information is never shared with any other social platforms. Essentially, the personalized AI assistant learns from the user’s individual actions and never shares that information with traditional AI models.

In conjunction with the name change, Myseum.AI stock will continue to trade on Nasdaq under the ticker symbol “MYSE.”

“As a privacy-first AI and social media technology company, we continue to deliver on our commitment to innovation in the secure digital media space through our development of popular privacy-first user platforms. Our new name, Myseum.AI, identifies our core AI-based technology that secures our multi-tiered social media ecosystem,” said Darin Myman, CEO of Myseum.

About Myseum, Inc.

Myseum, Inc. (formerly DatChat Inc.) is a privacy-focused AI and social media technology company developing innovative platforms for secure digital sharing and storage. Its flagship platform, Picture Party, is a next-generation patented instant social networking experience designed to make it easier, more fun and private to share. The platform enables users to create curated albums, build encrypted galleries with controlled access, personalize their content feeds, and organize collections within a broader digital ecosystem. Picture Party by Myseum is currently available at the iOS app store and Google Play store, with a desktop version expected later this year.

Built on patented technology and proprietary software, Picture Party by Myseum’s platform is an instant private social network for any occasion designed to make it easier, more fun and private to share. The platform enables individuals, families and groups to securely store and share messages, photos, videos within a private, multi-layered digital library, with a focus on privacy, control and long-term accessibility. The Company also operates DatChat Messenger & Private Social Network, which extends this focus on privacy by giving users greater control over their communications, including the ability to determine how long messages can be viewed, delete messages or entire conversations after sending, prevent screenshots and protect encrypted content stored on devices, all while maintaining a familiar messaging experience. For more information, visit myseum.com.

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 https://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.

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