Mr. Andrew Pollard reports

BLACKROCK SILVER ANNOUNCES FILING OF TONOPAH WEST UPDATED PRELIMINARY ECONOMIC ASSESSMENT TECHNICAL REPORT

Blackrock Silver Corp. has filed on SEDAR+ an independent technical report titled "Updated Preliminary Economic Assessment of Mineral Resource Estimate - Tonopah West Silver-Gold Project, Nye and Esmeralda Counties, Nevada, USA" effective March 25, 2026, and dated May 12, 2026, for the company's 100-per-cent-owned Tonopah West silver-gold project. The technical report was prepared in accordance with the Canadian Institute of Mining, Metallurgy and Petroleum Definition Standards for Mineral Resources and Mineral Reserves adopted May 19, 2014, and in accordance with National Instrument 43-101 -- Standards of Disclosure for Mineral Projects and supports the disclosure made by the company in its March 31, 2026, news release announcing the results of a preliminary economic assessment for Tonopah West. There are no material differences in the technical report from the information disclosed in the March 31, 2026, news release.

The technical report is available under the company's profile on SEDAR+. A copy of the technical report is also located on the company's website.

About Blackrock Silver Corp.

Blackrock Silver is an American-focused emerging primary silver developer systematically advancing the high-grade Tonopah West project, situated in the historic Queen of the Silver camps in a jurisdiction consistently ranked as one of the top mining regions globally. The company is backstopped by a veteran board and technical team with a proven record of discovering, financing, and building major precious metal mines in Nevada and globally. Blackrock is committed to establishing a secure, high-margin, domestic supply of silver and gold.