Exhibit 99.1

FORM OF PROXY CARD

ALCHEMY INVESTMENTS ACQUISITION CORP 1

PROXY FOR THE EXTRAORDINARY GENERAL MEETING OF SHAREHOLDERS THIS PROXY IS SOLICITED BY THE BOARD OF DIRECTORS

THE BOARD OF DIRECTORS RECOMMENDS A VOTE “FOR” EACH OF THE PROPOSALS BELOW.

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The undersigned hereby appoints [Mattia Tomba] [and [●]] (each, a “Proxy”), or failing him, the chairman of the Meeting, as proxy of the undersigned, with full power of substitution, to attend the extraordinary general meeting of shareholders (the “Meeting”) of Alchemy Investments Acquisition Corp 1, a Cayman Islands exempted company (the “Company”), to be held virtually via live webcast at [●] as described in the proxy statement/prospectus, and at [●] for purposes of Cayman Islands law and the Company’s amended and restated memorandum and articles of association, on [●], 2026 at [●] Eastern Time, and any postponement or adjournment thereof, and to vote all ordinary shares of the Company held of record by the undersigned at the close of business on [●], 2026 (the record date) as if the undersigned were then and there personally present on all matters set forth in the Notice of Extraordinary General Meeting, dated [●], 2026 (the “Notice”), a copy of which has been received by the undersigned, as follows:

1.Proposal No. 1 — The Business Combination Proposal — To consider and vote upon a proposal to approve by way of ordinary resolution and adopt the Business Combination Agreement, dated as of August 22, 2025 (as may be amended and/or restated from time to time, the “Business Combination Agreement”), by and among the Company, Alchemy Acquisition Holdings, Inc., a Delaware corporation and wholly-owned subsidiary of the Company (“Pubco”), Alchemy Merger Sub, LLC, a Delaware limited liability company and wholly-owned subsidiary of Pubco (“Newco”), Cartiga, LLC, a Delaware limited liability company (“Cartiga”), and Halle Benett, as the representative (the “Sellers’ Representative”) of holders of Cartiga’s securities, pursuant to which, among other things, following the Domestication (as defined below), Newco will be merged with and into Cartiga, with Cartiga surviving the merger and Pubco becoming its sole managing member.

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2.Proposal No. 2 — The Domestication Merger Proposal — To consider and vote upon a proposal to approve by way of special resolution that (a) the Company be authorized to merge with and into Pubco, with Pubco being the surviving company, pursuant to the Companies Act (Revised) of the Cayman Islands and the Delaware General Corporation Law, as amended (the “DGCL”) (the “Domestication”); (b) the plan of merger approved by resolution of the directors of the Company (the “Plan of Merger”) be authorized, approved and confirmed in all respects and the Company be authorized to enter into the Plan of Merger; (c) as of the effectiveness of the Domestication, the constitutional documents of Pubco will be the Proposed Organizational Documents (as defined below); and (d) the Plan of Merger be executed and submitted for registration, in each case as more fully described in the Notice.

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3.Proposal No. 3 — The Stock Issuance Proposal — To consider and vote upon a proposal to approve by way of ordinary resolution, for purposes of complying with the applicable provisions of Nasdaq Listing Rules 5635(a), (b) and (d), the issuance of shares of Pubco Class A Common Stock and securities convertible into or exchangeable for shares of Pubco Class A Common Stock to (i) the Cartiga equity holders pursuant to the Business Combination Agreement and (ii) any other persons pursuant to subscription, purchase or similar agreements the Company may enter into prior to Closing.

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4. Proposal No. 4 — The Organizational Documents Proposal — To consider and vote upon a proposal to approve by way of special resolution the proposed certificate of incorporation (the “Proposed Charter”) and proposed bylaws of Pubco (together with the Proposed Charter, the “Proposed Organizational Documents”), in the forms attached to the proxy statement/prospectus as Annex B-1 and Annex B-2, respectively, which will, among other things, change the name of Pubco to “Cartiga Holdings, Inc.”

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5. Proposal No. 5 — The Advisory Organizational Documents Proposals — To consider and vote upon the following four (4) separate proposals to approve on an advisory non-binding basis by way of ordinary resolution the following material differences between the Company’s current memorandum and articles of association and the Proposed Organizational Documents:

5A. Advisory Organizational Documents Proposal 5A (Authorized Shares) — to authorize the amendment and redesignation of the authorized share capital of the Company from 479,000,000 Class A ordinary shares, 20,000,000 Class B ordinary shares and 1,000,000 preference shares, par value $0.0001 per share, to 500,000,000 shares of Pubco Class A Common Stock, 100,000,000 shares of Pubco Class B Common Stock and 10,000,000 shares of Pubco preferred stock.

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5B. Advisory Organizational Documents Proposal 5B (Exclusive Forum Provision) — to authorize adopting Delaware as the exclusive forum for certain stockholder litigation and the federal district courts of the United States as the exclusive forum for resolving complaints asserting a cause of action under the Securities Act of 1933, as amended.

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5C. Advisory Organizational Documents Proposal 5C (Required Vote to Amend Charter) — to approve provisions providing that the affirmative vote of a majority of the voting power of all the then outstanding shares of capital stock of Pubco entitled to vote thereon, voting together as a single class, will be required to amend, alter, repeal or rescind any provision of the Proposed Charter; provided that, so long as any shares of Pubco Class A Common Stock remain outstanding, the prior affirmative vote of the holders of a majority of the outstanding shares of Pubco Class A Common Stock, voting as a separate class, will be required for any amendment that adversely alters or changes the powers, preferences or special rights of the Pubco Class A Common Stock.

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5D. Advisory Organizational Documents Proposal 5D (Additional Changes) — to authorize certain additional changes, including, among other things, (a) making Pubco’s corporate existence perpetual, and (b) removing certain provisions related to the Company’s status as a blank check company that will no longer be applicable upon Closing.

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6. Proposal No. 6 — The Equity Incentive Plan Proposal — To consider and vote upon a proposal to approve by way of ordinary resolution the Cartiga Holdings, Inc. 2026 Equity Incentive Plan, a copy of which is attached to the proxy statement/prospectus as Annex C.

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7. Proposal No. 7 — The Adjournment Proposal — To consider and vote upon a proposal to approve by way of ordinary resolution the adjournment of the extraordinary general meeting to a later date or dates, if necessary, to permit further solicitation and vote of proxies in the event that there are insufficient votes for the approval of one or more proposals at the extraordinary general meeting.

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NOTE: IN HIS DISCRETION, THE PROXY HOLDER IS AUTHORIZED TO VOTE UPON SUCH OTHER MATTER OR MATTERS THAT MAY PROPERLY COME BEFORE THE EXTRAORDINARY GENERAL MEETING AND ANY ADJOURNMENT(S) THEREOF.

THIS PROXY WILL BE VOTED IN ACCORDANCE WITH THE SPECIFIC INDICATION ABOVE. IN THE ABSENCE OF SUCH INDICATION, THIS PROXY WILL BE VOTED “FOR” EACH PROPOSAL AND, AT THE DISCRETION OF THE PROXY HOLDER, ON ANY OTHER MATTERS THAT MAY PROPERLY COME BEFORE THE EXTRAORDINARY GENERAL MEETING OR ANY POSTPONEMENT OR ADJOURNMENT THEREOF.

NOTWITHSTANDING THE ORDER IN WHICH PROPOSALS ARE SET OUT HEREIN, THE COMPANY MAY PUT THE PROPOSALS TO THE EXTRAORDINARY GENERAL MEETING IN SUCH ORDER AS IT MAY DETERMINE, AND THE ADJOURNMENT PROPOSAL MAY BE PRESENTED FIRST.

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Sign exactly as your name(s) appears on your share certificate(s). A corporation is requested to sign its name by its President or other authorized officer, with the office held designated. Executors, administrators, trustees, etc., are requested to so indicate when signing. If a share certificate is registered in two names or held as joint tenants or as community property, both interested persons should sign.

PLEASE COMPLETE THE FOLLOWING:

I plan to attend the Extraordinary General Meeting (Circle one): Yes            No

Number of attendees: ————

PLEASE NOTE:

SHAREHOLDER SHOULD SIGN THE PROXY PROMPTLY AND RETURN IT IN THE ENCLOSED ENVELOPE AS SOON AS POSSIBLE TO ENSURE THAT IT IS RECEIVED BEFORE THE EXTRAORDINARY GENERAL MEETING. SHAREHOLDERS MAY ALSO VOTE BY INTERNET AT [●] OR BY TELEPHONE AT [●], USING THE CONTROL NUMBER PRINTED ON THIS PROXY CARD: [CONTROL NUMBER] OR MAY VOTE DURING THE MEETING,. PLEASE INDICATE ANY ADDRESS OR TELEPHONE NUMBER CHANGES IN THE SPACE BELOW.