LONDON BTC COMPANY LIMITED

Staking of the Huntington-Whitman Gold Project, Nevada

Initial US gold project staked; further Nevada and Arizona staking underway

London, New York, 09 June 2026 - London BTC Company Limited ("Company") (BTC: LSE, VINZF: OTCQB), the London Stock Exchange main market-listed Bitcoin mining and treasury company with bitcoin mining operations across North America, is pleased to announce that the Company has staked 111 mineral claims at the Huntington-Whitman Gold-Silver Project (the "Project") in Humboldt County, Nevada, USA, by its wholly-owned US subsidiary Tethered Gold LLC. The staking of this exciting gold project in the heart of Nevada's premier gold province marks the Company's first project under the Company's previously announced US gold hedging strategy and the first cornerstone of a planned gold portfolio expansion in the USA.

"This is an extraordinary project for us, that sits amongst some incredibly large gold mines in the heart of Nevada's gold production." said David Lenigas, the Company's Chairman. "I see this project as adding significant value towards our gold hedge in short order and I am hoping to have further updates in the coming weeks."

Key Points

·    Initial US gold project for the Company, staking 111 mineral claims covering 2,293 acres (9.3 km²) in the historically productive Humboldt County gold district of Nevada.

·    Nevada was ranked the #1 mining jurisdiction in the world in the Fraser Institute's 2025 Annual Survey of Mining Companies.

·    London BTC now joins major gold producers by being located near Barrick Gold and Newmont Corporation, who operate Twin Creeks and Turquoise Ridge Gold Mines within 35 miles (56 km) (see Figure 1).

·    The Project is strategically located 30 km north of Winnemucca, Nevada, within a region of world-class gold deposits, providing reliable access, a local workforce and mining services.

·    Huntington-Whitman sits 3 miles (5 km) from the Sleeper Mine (with endowment of 3.6 Moz gold & 23.5 Moz silver, Paramount Gold Nevada, NYSE: PZG), and 0.75 miles (1.2 km) from the historic Jumbo Deposit, which is recorded as the largest historical producer in the district.  

·    Huntington-Whitman is an underexplored extension to the proximal Jumbo Mine (active 1935 - 50s), with historic ore grades reported at 1.5 oz/t Au (~47 g/t Au) with bonanza veins reporting up to 26.4 oz/t Au (822 g/t Au).

·    Gold-silver mineralisation is hosted by low-sulphidation epithermal veins and breccias within Mesozoic sediments. The system exhibits significant surface expression, and a review of government databases, technical literature and historical company reports identified no record of modern exploration.

·    Historical workings include 13 shafts, 9 tunnels and 70 exploration prospect pits, providing immediate targets for follow-up exploration.

·    Surface sampling is underway with field teams prioritising historical shafts and tunnels across the project area, assays are expected by mid-June.  

·    Key next steps across the Huntington-Whitman project, include:

1.   Modern surface sampling across all historical workings in the project area.

2.   Compilation of geoscientific data to develop an understanding of local structural setting.

3.   Progressing permitting work to advance towards active drilling.

·    Further project staking in Nevada and Arizona are actively progressing through the Company's technical adviser, Schiehallion Consulting.

CEO Commentary

Hewie Rattray, CEO of the Company, stated:

"The staking of the Huntington-Whitman Project marks an important first step in delivering on the US gold hedging strategy we set out in April. We have moved quickly from strategy to execution, and we now hold a meaningful land position in one of the most productive gold districts in the world.

Northern Nevada offers a combination which we believe is very difficult to find elsewhere, with a tier-one regulatory regime, world-class deposits, established mining infrastructure around Winnemucca, an experienced local workforce, and access to development solutions. That combination materially de-risks both exploration and any future development scenarios.

Huntington-Whitman is the first; we have further projects actively progressing across Nevada and Arizona, and we intend to continue to build a portfolio of hard-asset gold exposure alongside our core Bitcoin treasury and mining operations which we continue to monitor and progress.

As we continue to execute and expand this strategy, we believe London BTC is building a differentiated hard-asset platform that will attract significant investor interest: Bitcoin as our digital reserve asset, active mining operations as our operating engine, and gold exposure as a complementary store-of-value opportunity in world-class mining jurisdictions."

Figure 1: Huntington-Whitman Project location, Humboldt County, Nevada

Project Location

The Huntington-Whitman Project is located approximately 30 km north of Winnemucca in Humboldt County, Nevada (Figure 1), the largest gold-producing state in the United States. The Project sits within an established gold mining area that has proven economic deposits of Au-Ag from the proximal Sleeper, Sandman and Jumbo deposits.

Sleeper Mine, has reported production (1986-1996) of 1.7 Moz Au and 2.3 Moz Ag with current measured and indicated resources consisting of a total of 163.2 Mt @ 0.361 g/t Au and 4.05 g/t Ag for 1.9 Moz Au and 21.2 Moz Ag, owned by Paramount Gold Nevada, NYSE: PZG

Sandman Project, measured and indicated resources consists of a total of 8 Mt @ 1.17 g/t for 272 koz Au, owned by Borealis Mining Company, TSXV: BOGO

Jumbo Mine, historic resource discovered in 1935 and operated until the 1950's, ore grade of around 1.5 oz/t (~47 g/t Au) reported and bonanza veins grading up to 26.4 oz/t (822 g/t Au) - no detailed production data currently available.

Regional Endowment - Northern Nevada

The Project sits within a global tier 1 gold producing region. Nevada accounts for the majority of United States gold output and consistently ranks among the top five gold producing jurisdictions globally. The district hosts a dense cluster of major, mid-tier and junior gold producers operating within trucking distance of Huntington-Whitman. This provides a strong foundation of mining services, contractors, drilling providers, laboratories and toll infrastructure.

Nevada Gold Mines (NGM), the Barrick (61.5%) / Newmont (38.5%) joint venture (NYSE: B; NYSE: NEM), is the dominant operator in the immediate region. NGM's Turquoise Ridge Complex, comprising the Turquoise Ridge Underground, Vista Underground and the combined Twin Creeks open-pit and underground operations, lie approximately 35 miles (56 km) east of Huntington-Whitman. NGM also operates the Phoenix, Cortez, Gold Quarry and Gold Strike assets within the broader region to the east and south-east of the Project. NGM produced 3.4 Moz of Au across the portfolio in 2025.

Kinross Gold Corporation (NYSE: KGC) holds a long-standing Nevada presence to the south of the Project. Kinross is optioned to the Goldbanks Project 31 miles (50 km) to the south of Winnemucca. Kinross also operates the Round Mountain Mine (Nye County). The mine represents a long-life, large-tonnage open-pit and heap-leach operation, and the Bald Mountain Mine (White Pine County), the mine represents a major disseminated gold system along the southern Carlin trend and holds approximately 3.6 Moz Au of measured and indicated resources (2021). Kinross's continued investment in its Nevada portfolio highlights the long-term attractiveness of the State to major gold producers.

Other proximal operators include Hecla Mining Company (NYSE: HL), operator of the high-grade epithermal Midas Mine to the east; i-80 Gold Corp (NYSE: IAUX), operator of the Granite Creek, Lone Tree, McCoy-Cove and Ruby Hill gold projects across northern Nevada; SSR Mining (NASDAQ: SSRM), operator of the long-running Marigold open-pit heap-leach mine in Humboldt County; and Coeur Mining (NYSE: CDE), operator of the Rochester silver-gold mine in Pershing County immediately south of Humboldt. Together with Paramount Gold Nevada (NYSE: PZG) and Borealis Mining (TSXV: BOGO), referenced above as the holders of the proximal Sleeper and Sandman deposits, this constellation of operators forms a highly concentrated cluster of active gold mining and development activity.

The board believe the combination of world-class regional endowment, the continued presence of major gold producers within close proximity, and decades of accumulated mining, processing and services infrastructure provides a significant strategic advantage to the Company as it advances Huntington-Whitman and progresses further projects across Nevada and Arizona.

The Huntington-Whitman Project

Figure 2: Huntington-Whitman Project Plan, Humboldt County, Nevada

The staked ground comprises three primary prospects and five targets, totalling 111 unpatented mineral claims over 2,293 acres (9.3 km²) (Figure 2). The blocks have been designed to cover the mapped vein corridors, identified historical workings and structurally favourable ground interpreted from regional datasets. The area holds of 9 km trend of historical workings, including 13 shafts, 9 adits (tunnels) and 70 exploration pits for immediate follow-up. Mineral claims have been staked by Convergent Mining and lodged with the Bureau of Land Management, allowing for a low-cost high-quality projects in a tier-1 jurisdiction.

Table 1: Summary of Huntington-Whitman historical workings separated by prospect

The Project covers a series of historically mined vein systems hosting low-sulphidation epithermal gold-silver mineralisation. The mineralisation is hosted within Mesozoic sediments, with gold primarily associated with adularia-bearing quartz veins and quartz breccia zones.  Historical production figures offer an average ore grade of 1.5 oz/t gold (47 g/t Au) with samples of bonanza veining hosting up to 26.4 oz/t gold (822 g/t Au) (Calkins, 1938). A style consistent with the Sleeper deposit 5 kilometres to the West. Volcanics are present in the local geology, from literature, volcanics have been historically overlooked, however, rhyolitic and basaltic units are of economic importance at the Sleeper deposit (Montgomery & Barr, 2004).

Additionally, at Jumbo and Huntington-Whitman, grade was determined visually, material that did not show obvious gold was left behind. Recent exploration into historical epithermal mines in the region, which were evaluated by-eye, intercepted up to 1 oz/t Au (31 g/t Au) in unmined veins (Montgomery and Barr, 2004), highlighting the potential of historical workings.

Exploration gaps exist within the local area due to selective sampling, geological bias, high historical cut-off grade and shallow non-systematic exploration. Mineralisation is visible at surface across numerous historical workings, these are marked by oxide zones, alteration, adularia and chaotic quartz vein networks. Considering the potential of overlooked Au mineralisation, gathering modern assay data for the historical workings which exist over the project is a high priority. This will allow the Company to rapidly develop drill-ready targets into any fertile/auriferous components of the system which are revealed through surface sampling.  The Company cautions that these historical grades have not been verified by the Company and should not be treated as indicative of any future resource at the Project. Compliant assays will be reported once available.

Figure 3: Huntington-Whitman Project, historical mine shaft from the Southern Prospect

Forward Work Programme

•   Reconnaissance rock-chip sampling of all identified historical workings across the North, Central and South blocks, with selected targets within the satellite claim groups.

•   Geological mapping to refine the structural setting of the principal vein corridors and to identify follow-up drill targets.

•   Compilation of geoscientific data to assist in the understanding of the local geology and structural setting.

•   Progression of further gold projects in Nevada and Arizona, in line with the Company's previously announced phased strategy.

Issue of ordinary shares

The Company has agreed to issue new ordinary shares with an aggregate value of £20,000 in satisfaction of contractor fees relating to the on-the-ground work undertaken in Nevada in connection with the claim staking and geological assessment of this tenement package.

A further announcement will be made upon the issue of these shares.

Further Projects and Portfolio Expansion

The Huntington-Whitman project is the first of a planned series of gold projects under the Company's US gold strategy. Schiehallion Consulting continues to actively advance the identification, evaluation and staking of additional prospective gold projects across Nevada and Arizona, with the intention of building a portfolio of high-quality assets that complement Huntington-Whitman.

The Company's objective is to use this initial project as a platform from which to grow a diversified Nevada and Arizona gold portfolio, with further updates as additional projects are secured.

Cautionary Statement

This announcement contains references to historical exploration results and historical production figures sourced from third-party reports, public databases, technical literature and government reports. These historical results have not been verified by the Company, are not reported in compliance with any current Mineral Resource or Ore Reserve code and should not be relied upon as indicative of the prospectivity of the Project or any future resource, reserve or production from the Project. Compliant assay and exploration results will be reported by the Company in due course.

Competent Persons Statement

The information in this report that relates to technical information is based on information compiled by Fionnlagh (Finn) Hunter, Principal Geological Consultant, who is a Member of the Australasian Institute of Mining and Metallurgy (AusIMM) and has sufficient experience of relevance to the styles of mineralisation and the types of deposits under consideration, and to the activities undertaken, to qualify as a Competent Person as defined in the 2012 Edition of the Joint Ore Reserves Committee (JORC) Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves. Mr Hunter consents to the inclusion in this report of the matters based on the information in the form and context in which it appears.

The directors of London BTC Company Limited accept responsibility for this announcement.

For further information please contact:

About London BTC Company Limited

The Company's primary listing is on the London Stock Exchange (United Kingdom) under the ticker "BTC.L" and it trades in the USA on the OTCQB under the ticker "VINZF". The Company is building up a strategic Bitcoin holding through acquiring Bitcoin as a treasury and currency management tool and through adding Bitcoin generated from its mining operations in North America. The Company currently operates Bitcoin miners hosted across multiple third-party facilities in Indiana, Iowa, Nebraska and Texas (USA) and Labrador (Canada).

References

•    Amax Gold Inc. Sleeper Gold Project, Humboldt County, Nevada: NI 43-101 Technical Report. Prepared by D. C. Noble and J. B. McKee. 1993.

•    Barrick Mining Corporation. Full Year and Fourth Quarter 2025 Results. February 5, 2026.

•    Borealis Mining Company Limited. NI 43-101 Technical Report, Sandman Gold Property, Nevada, USA. Effective date January 5, 2026; report date February 19, 2026.

•    Calkins, F. C. Gold Deposits of Slumbering Hills. University of Nevada Bulletin, vol. 32, no. 3, Geology and Mining Series no. 30A. Reno: University of Nevada, 1938.

•    Fulton, J. A. "The Austins' Gold Mine in the Slumbering Hills." Western Mining News, 1935-1937. Article on file at Nevada Bureau of Mines and Geology.

•    Kinross Gold Corporation. 2021 Annual Mineral Reserve and Resource Statement. Toronto: Kinross Gold Corporation, 2022.

•    Vanderburg, W. O. Information Circular, Humboldt County, Nevada. Washington, DC: U.S. Bureau of Mines, 1938.

•    Willden, Ronald. Geology and Mineral Deposits of Humboldt County, Nevada. Nevada Bureau of Mines Bulletin 59. Reno: Nevada Bureau of Mines, 1964.

•    York, Bernard. Unpublished report. NBMG District File 123, 1937.