Exhibit 23.3

Consent of Independent Registered Public Accounting Firm

We hereby consent to the use in the Prospectus constituting a part of this Registration Statement on Form F-4 of our report dated March 16, 2026, relating to the financial statements of Cantor Equity Partners III, Inc., as of December 31, 2025 and 2024 and for the years then ended, which is contained in that Prospectus. We also consent to the reference to our firm under the caption “Experts” in the Prospectus.

/s/ WithumSmith+Brown, PC

New York, New York

March 27, 2026