Mr. Isaac Maresky reports

GOLD HART COPPER ANNOUNCES RESULTS OF GEOPHYSICAL SURVEY AT TOLITA GOLD-COPPER-MOLYBDENUM-SILVER ASSET IN VICUNA CHILE INCLUDING 50% INCREASE IN LENGTH AND 76% INCREASE IN AREA OF CHARGEABLE ANOMALY

Gold Hart Copper Corp. has released positive results from a new geophysical survey conducted at the company's flagship Tolita gold-copper-molybdenum-silver asset in the emerging Vicuna copper-gold district of Chile. Importantly, the survey confirmed a nearly 50-per-cent increase in the length of its main chargeability anomaly, from an initial 1.6-kilometre known anomaly to a final 2.4-kilometre length. In terms of area, the chargeable anomaly expanded from approximately 2.5 square kilometres to approximately 4.5 square kilometres, representing an increase of nearly 76 per cent. The geophysical survey also confirmed extension and expansion at depth, consistent with gold-copper or copper-gold porphyry systems of the Vicuna district. The company also completed a geochemical survey and construction of new roads at its Nessa gold and copper properties along the Domeyko fault, just west of Kinross's La Coipa gold mine.

New geophysical survey at flagship Tolita gold-copper-molybdenum-silver asset in Vicuna district

Gold Hart elected to proceed with a new (second) geophysical survey at the company's flagship Tolita asset in order to explore potential extensions to the north of the existing anomaly and at depth. The company is very pleased to announce a significant extension was confirmed in both directions.

Specifically, to the north, Gold Hart saw the initial 1.6-kilometre chargeable anomaly expand in size to 2.4 kilometres, an increase of approximately 50 per cent. Notably, Gold Hart also confirmed that the conductive anomaly both continues -- and in fact expands -- as it gets deeper. In terms of area, the target anomaly expanded from a known size of approximately 2.5 square kilometres to a new expanded size of approximately 4.5 square kilometres, representing an increase of 76 per cent. The company and its consulting geologists and geophysicists believe the size of the anomaly is consistent with other gold-copper or copper-gold systems of the Vicuna district.

The geophysical survey was conducted by a highly experienced geophysics firm, Argali Geofisica EIRL, having completed hundreds of successful geophysical surveys in Chile, including Caserones (Lundin), Escondida (BHP and Rio Tinto), El Morro (Teck and Newmont), Cerro Casale (Barrick and Newmont), Chuquicamata (Codelco), Maricunga (Kinross), Volcan (Hochschild and Tiernan), La Coipa (Kinross), Esperanza and Valeriano (Atex). Regarding this new geophysical survey at Tolita, Joseph Jordan, chief geophysicist at Argali Geofisica, commented: "The chargeability anomaly extends another 800 metres north and also extends to greater depths, together with a strong and well-defined conductive feature.

"The vertical extent of the steeply dipping conductor that is likely related to a fault is better defined on the two new deep lines (2600N and 452200E). This surprised me, as I had expected resolution similar to the first lines. This would indicate to me that the probable structure extends very deeply and has a strong contrast in resistivity with the host rock. Because it is conductive, it should act as good conduit for hydrothermal water flow, which should be good news for mineralization. There is confirmation that the alteration system extends to greater depth and may increase in intensity at depth as it is more conductive. Hopefully, the copper and gold grades would increase correspondingly as well."

Completion of geochemical survey and new roads at Nessa properties west of Kinross's La Coipa on Domeyko fault

Gold Hart also announces completion of a geochemical survey at the Nessa gold and copper properties, which are located just west of Kinross's La Copia gold mine. This geochemical survey was just completed immediately after Gold Hart completed construction of new roads into the properties. The samples are being sent to the lab this week, and the company hopes to be in a position to report on these results as soon as practicable. While constructing the new roads at the Nessa assets (Nessa, Pingo and Manto Carolina), Gold Hart discovered additional historic mining pits with visible copper minerals on surface, including malachite and chrysocolla. These pits and copper showings were not known to the company, nor were they included in any prior documentation regarding the assets.

Tolita driling update

As previously announced, the company is currently drilling a deeper diamond drill hole at its Tolita gold-copper-molybdenum-silver asset in the Vicuna district of Chile. Gold Hart hopes to complete this high-priority DDHTOL01 hole -- currently projected to reach a depth of 700 metres to 1.1 kilometres -- before the end of this month. This priority drill hole was designed to test the highest chargeability portion of the geophysical anomaly at Tolita.

Most recently (April to May, 2025), the company completed two holes of approximately 600 metres each, confirming that Tolita indeed hosts a fertile porphyry system. Gold Hart geologists observed early-stage veining near surface, providing the first clear evidence of a porphyry-related system within zones of moderate chargeability. The mineral intercepts occur within a multigeneration stockwork vein system hosted by a series of multiphase porphyry intrusions. Multiple alteration types have been identified, overprinting the original potassic alteration of the porphyry system. At greater depth, the potassic alteration becomes increasingly dominant, accompanied by more intense and continuous veining across locally moderate to stronger chargeability amplitudes. The newly acquired geophysical data indicate that the system may even extend several hundred metres further at depth. Effectively, the company and various visiting geologists have all concluded the presence of a porphyry, and Gold Hart is now focused on exploration to find the richer grades and potential limits of the system.

About Gold Hart Copper Corp.

Gold Hart is one of the largest independent land owners surrounding major miners where the famous Maricunga gold belt meets the emerging Vicuna copper belt in Chile. Gold Hart is actively acquiring, exploring and developing its portfolio of gold, copper and silver properties adjacent to the largest gold and copper assets on the continent.

Gold Hart has rolled up a portfolio of historically significant assets surrounding majors, in some cases personally staked by the very same geologists who made the adjacent megadiscoveries, since the early 1990s. Some of the Gold Hart properties have already undergone a first phase of drilling, with highly encouraging results of gold, copper, silver and molybdenum. Gold Hart's properties are controlled 100 per cent and not subject to any royalties whatsoever.

Gold Hart believes it may be sitting on one of the only fully preserved untested large-scale gold-copper-silver porphyry targets in the Vicuna district -- an asset that was first recognized for its uniquely high grades of gold and copper on surface and staked by one of the Maricunga-Vicuna district's pioneering geologists in 1993. Gold Hart is fully financed for its planned drill campaign.

Gold Hart's team of geologists were personally involved in pioneering exploration in the region, leading to some of its greatest gold, copper and silver deposits, and include the country's former Geological Survey national deputy manager, Dr. Professor Jose Frutos. Specifically, senior Gold Hart geologists were personally involved in the Escondida copper discovery, now the largest copper mine in the world, controlled by Rio Tinto and BHP, as well as Cerro Casale, the largest gold-copper discovery in Chile, acquired by Barrick and Newmont (GoldCorp) with 59 million ounces of gold and 12.5 billion pounds of copper.

In addition to its large land position in the Vicuna district, Gold Hart recently acquired the Nessa properties just northwest on Chile's Paleocene-Eocene belt on the famous Domeyko fault system, which is home to some of Chile's largest gold, copper and silver assets, including Escondida, Chuquicamata and Collahuasi. The Nessa properties host several historic gold and copper artisanal mines with high grades of gold, copper and silver on surface, with a large alteration and magnetic anomaly extending approximately six kilometres. Kinross's La Coipa gold mine sits just east of Nessa.

About Gold Hart Copper's Tolita gold-copper-molybdenum-silver target

The Tolita property is a historically significant gold-copper asset that was first recognized and staked in 1993 -- by one of the pioneering geologists of the Maricunga-Vicuna district -- for its uniquely high grades of gold and copper on surface. Geochemical surveys revealed gold, copper, silver and molybdenum anomalies, which led to trenching. Tolita has had significant trenching (5,600 metres/5.6 kilometres) with the highest-grade trench returning grades up to 52 grams per tonne gold equivalent, including 4 per cent copper. Tolita has undergone helicopter mag surveys, which identified four unique anomalies as well.

In 1996, a third party company optioned the property and drilled three short 200-metre RC (reverse circulation) holes, without any geophysics, and yet still hit gold and copper in all three holes, including long intercepts of gold and copper (150 metres and 164 metres, respectively) close to surface in two of the three holes. At the time, gold was approximately $300 per ounce and copper traded below $1 per pound, and large-scale sulphide porphyry deposits with both gold and copper were often considered less favourable than smaller scale gold-only oxide deposits. As a result and due to general market sentiment for junior exploration companies in 1997 to 1998, Tolita was only drilled to a depth of 200 metres with three short RC holes (out of a planned eight-hole campaign).

When Gold Hart acquired the property, a full geophysical survey was conducted by a recognized geophysics firm, and a large high-chargeability and conductive anomaly was discovered, which is near surface and almost 2.5 square kilometres in size and interpreted as a copper-gold or gold-copper porphyry system that certainly warrants additional exploration and drilling. Gold Hart has therefore launched diamond drilling and is fully financed for this planned campaign.

About Gold Hart Copper's Nessa gold-copper-silver assets

Gold Hart's Nessa properties sit on the renowned Domeyko fault of Chile, most famous for hosting the Escondida copper mine -- now the largest copper mine in the world -- which was first staked by Gold Hart co-founder Dr. Jose Frutos in the 1970s. Dr. Frutos recognized and personally staked some of the Nessa claims nearly two decades ago, due to the unique surface alteration -- visible from satellite imagery -- with high grades on surface and several historic mines that exploited gold, copper and silver at or near surface through pits and shallow tunnels. The historic mines coincide with a pervasive yet intense hydrothermal alteration (silicic-argillic to quartz-sericitic with abundant kaolin in the central part) with a halo of propilitic alteration in the periphery, with disseminated gold-copper-silver mineralization throughout.

The Nessa properties were known to host 13 historic artisanal high-grade gold and copper pits, which were mined using mules due to lack of access. Additionally, historic geochemical surveys discovered high grades on surface for gold, copper and silver, with samples up to 25 grams per tonne gold, 3.25 per cent copper and 958 grams per tonne silver. However, the company has now discovered additional copper showings on surface and historic mining pits and now believes there may be other unknown targets on these assets.

Qualified person

The technical information contained in this news release related has been reviewed by Jonathan A. Warner, executive vice-president of Gold Hart Copper and a qualified person within the meaning of National Instrument 43-101.

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