Exhibit 23.1

Independent Registered Public Accounting Firm’s Consent

We consent to the incorporation by reference in this Registration Statement on Forms S-3 of our report dated March 31, 2025 with respect to the financial statements of T Stamp Inc. for the year ended December 31, 2024 included in the Annual Report on Form 10-K. We also consent to the reference to us under the heading “Experts” in such Registration Statement.

/s/ Marcum LLP

Marcum LLP

Marlton, New Jersey

November 24, 2025