DATA KNIGHTS 收购公司 如果您使用电子方式投票，请不要退还代理卡。 互联网/移动 — www.cstproxyvote.com 使用互联网为你的代理人投票。访问上述 网站时，请准备好您的 代理卡。按照提示对您的股票进行投票。 在会议上投票 — 如果您计划参加虚拟的在线特别会议 ，则需要您的 12 位数的控制 号码才能在特别的 会议上以电子方式投票。参加： https://www.cstproxy.com/dataknights/2023 MAIL — 在您的代理卡上标记、签名并注明日期，然后 将其装在提供的已付邮资的信封中退回。 您的互联网投票授权指定代理人 对您的股票进行投票，其方式与您 标记、签名并归还代理卡的方式相同。 通过互联网以电子方式提交的选票 必须在 2023 年 10 月 16 日美国东部时间晚上 11:59 之前收到。 你的投票很重要。请今天投票。 立即-每周 7 天、每天 24 小时或通过邮件投票 通过互联网投票-QUICK EASY 23115 Data knights Acq.Corp Proxy Card_rev8-Front 在这里折叠不要分开 • 插入信封中提供 DATA KNIGHTS Acq.Corp. FROME 商业园 G6 单元，MANOR ROAD，FROME，英国， FROME，BA11 4FN PROXY 此代理是代表董事会征求的 以下签署人撤销了先前与这些股票有关的代理人，特此确认收到了2023年9月22日的通知和2023年9月22日的委托书 特别会议将于美国东部时间2023年10月17日上午10点30分作为虚拟会议（ “特别会议”）举行，其唯一目的是对以下提案进行审议和表决，因此 任命巴里·安德森和菲尔道兹·埃德明·本·莫赫塔尔（拥有单独行动的全部权力）、下列签署人的律师和 代理人，每人都有完全的替代权，对以所提供的名义注册的 公司的所有普通股进行投票，下列签署人有权在特别会议和 的任何续会上投票，下列签署人如亲自出席，将拥有的所有权力。在 限制特此给予的一般授权的前提下，上述代理人被指示对随附的委托书中提出的提案进行投票或采取行动 ，并指示他们每个人都按以下方式进行表决或采取行动 。 此代理执行后，将按照此处指示的方式进行投票。如果没有提出 的指示，则该代理人将被投票给 “赞成” 提案 1 中提出的提案，“赞成” 提案 2 中提出的提案，“支持” 提案 3 中提出的提案 ，“支持” 提案 3A 中提出的提案，“支持” 提案 3B 中提出的 提案，“支持” 提案 4 中提出的提案， “对于提案 5 中提出的每位被提名人，以及 “支持” 提案 6 中提出的提案 （如果该提案是在特别会议上提出的）。 此代理将撤销您之前签署的所有代理。 （续，另一面有待标记、日期和签名）

Important Notice Regarding the Availability of Proxy Materials for the Special Meeting of Shareholders to be held on October 17, 2023 This notice of meeting and the accompany proxy statement are available at https://www.cstproxy.com/dataknights/2023 23115 Data knights Acq.Corp Proxy Card_REV8 - Back Signature_________________________________Signature, if held jointly_________________________________Date____________, 2023 Signature should agree with name printed hereon. If shares of the Class A common stock are held in the name of more than one person, EACH joint owner should sign. Executors, administrators, trustees, guardians, and attorneys should indicate the capacity in which they sign. Attorneys should submit powers of attorney. Please mark your votes like this X PROXY THE BOARD OF DIRECTORS RECOMMENDS A VOTE “FOR” ALL PROPOSALS. CONTROL NUMBER Proposal 1 — Business Combination Proposal. To adopt and approve an Agreement and Plan of Merger, by and among Data Knights, Data Knights Merger Sub, Inc., OneMedNet Corporation, Data Knights, LLC, as Purchaser Representative, and Paul Casey, as Seller Representative, as set forth in the proxy statement, whereby Merger Sub will merge with and into OneMedNet, with OneMedNet changing its name to OneMedNet Solutions Corp. and continuing as the “Surviving Corporation” and wholly-owned subsidiary of Data Knights (collectively, the “Business Combination”). Proposal 2 — Nasdaq Proposal. To approve, for purposes of complying with Nasdaq Listing Rules 5635(a) and (b), the issuance of more than 20% of the issued and outstanding Class A common stock and the resulting change in control in connection with the Business Combination. Proposal 3 — Charter Amendment Proposal. To adopt and approve the Third Amended and Restated Certificate of Incorporation, as set out in Annex C to the proxy statement/prospectus, which shall become effective upon the closing (the “Closing”) of the Business Combination ( the “Charter Amendment Proposal”) including (i) the addition of a super majority voting requirement to amend the Surviving Corporation’s Bylaws (the “Bylaw Amendment Requirement”), and (ii) the addition of a super majority voting requirement to amend Articles V (Board of Directors), VI (Stockholders), VII(Liability and Indemnification; Corporate Opportunity), VIII (Business Combinations), IX (Exclusive Forum), and Article X (Amendments) of the Third Amended and Restated Certificate of Incorporation (the “Article Amendment Requirement”). Proposal 3A — Bylaw Amendment Requirement. To adopt and approve the addition to Data Knights’ Certificate of Incorporation of a super majority voting requirement to amend the Surviving Corporation’s Bylaws, as contained in the Third Amended and Restated Certificate of Incorporation. Proposal 3B — Article Amendment Requirement. To adopt and approve the addition to Data Knights’ Certificate of Incorporation of a super majority voting requirement to amend Articles V (Board of Directors), VI (Stockholders), VII (Liability and Indemnification; Corporate Opportunity), VIII (Business Combinations), IX (Exclusive Forum), and Article X (Amendments) of the Third Amended and Restated Certificate of Incorporation, as contained in the Third Amended and Restated Certificate of Incorporation. Proposal 4 — Director Election Proposal. To vote for the election of the following individuals to serve on the Board of Directors of Data Knights following the Business Combination: Class 1 (to serve until 2023 annual meeting): Erkan Akyuz Eric Casaburi Robert Golden FOR WITHHOLD Class 2: (to serve until 2024 annual meeting) Paul Casey Dr. Julianne Huh Dr. Thomas Kosasa FOR WITHHOLD Class 3: (to serve until 2025 annual meeting) Dr. Jeffrey Yu Dr. Christoph Zindel FOR WITHHOLD Proposal 5 — Incentive Plan Proposal. To approve and adopt the 2022 Equity Incentive Plan (the “Equity Incentive Plan”), a copy of which is attached to the proxy statement/prospectus as Annex D (the “Incentive Plan Proposal”). Proposal 6 — Adjournment Proposal. To adopt and approve a proposal to adjourn the Special Meeting to a later date or dates if necessary to permit further solicitation and vote of proxies if it is determined by Data Knights that more time is necessary or appropriate to approve one or more Proposals at the Special Meeting. Proposal 7 - NTA Amendment Proposal. To consider and vote on an amendment to the Charter, which amendment shall be effective, if adopted and implemented by Data Knights, prior to the consummation of the proposed Business Combination, to remove from the Charter the Redemption Limitation contained under Section 9.2(a) preventing Data Knights from closing a business combination if it would have less than $5,000,0001 of net tangible assets. PLEASE SIGN, DATE AND RETURN THE PROXY IN THE ENVELOPE ENCLOSED TO CONTINENTAL STOCK TRANSFER & TRUST COMPANY.THIS PROXY WILL BE VOTED IN THE MANNER DIRECTED HEREIN BY THE UNDERSIGNED SHAREHOLDER. IF NO DIRECTION IS MADE, THIS PROXY WILL BE VOTED “FOR” THE PROPOSAL SET FORTH IN PROPOSAL 1, “FOR” THE PROPOSAL SET FORTH IN PROPOSAL 2, “FOR” THE PROPOSAL SET FORTH IN PROPOSAL 3, “FOR” THE PROPOSAL SET FORTH IN PROPOSAL 3A, “FOR” THE PROPOSAL SET FORTH IN PROPOSAL 3B, “FOR” EACH OF THE NOMINEES SET FORTH IN PROPOSAL 4, “FOR” THE PROPOSAL SET FORTH IN PROPOSAL 5, “FOR” PROPOSAL SET FORTH IN PROPOSAL 7 AND “FOR” THE PROPOSAL SET FORTH IN PROPOSAL 6, IF SUCH PROPOSAL IS PRESENTED AT THE SPECIAL MEETING. THIS PROXY WILL REVOKE ALL PRIOR PROXIES SIGNED BY YOU. FOR AGAINST ABSTAIN FOR AGAINST ABSTAIN FOR AGAINST ABSTAIN FOR AGAINST ABSTAIN FOR AGAINST ABSTAIN FOR AGAINST ABSTAIN FOR AGAINST ABSTAIN FOR AGAINST ABSTAIN