CryptoStar Corp. — Capital/Financing Update 2026

Feb 14, 2026

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Dentons Canada LLP 77 King Street West, Suite 400 Toronto-Dominion Centre Toronto, ON, Canada M5K 0A1

dentons.com

May 12, 2021

VIA SEDAR

Ontario Securities Commission, as principal regulator British Columbia Securities Commission Alberta Securities Commission Financial and Consumer Affairs Authority of Saskatchewan The Manitoba Securities Commission Autorité des marchés financiers Nova Scotia Securities Commission Financial and Consumer Services Commission (New Brunswick) Superintendent of Securities, Prince Edward Island Office of the Superintendent of Securities, Service Newfoundland and Labrador

Dear Sirs/Mesdames:

Re: Tetra Bio-Pharma Inc.

Prospectus Supplement dated May 12, 2021 to the Final Short Form Base Shelf Prospectus dated April 1, 2020 (the "Prospectus Supplement")

In connection with the Prospectus Supplement, we consent to the use of our name, Dentons Canada LLP, on page (iv) and under the heading "Legal Matters" in the Prospectus Supplement, and to the use of our name and legal opinion under the heading "Eligibility for Investment" in the Prospectus Supplement.

We confirm that we have read the Prospectus Supplement and have no reason to believe that there are any misrepresentations in the information contained therein that is derived from our opinions or that is within our knowledge as a result of the services we performed in connection with such opinions.

Yours truly,

"Dentons Canada LLP"