Mr. Isaac Maresky reports

GOLD HART COPPER PROVIDES UPDATES ON DRILLING AT FLAGSHIP TOLITA ASSET IN VICUNA DISTRICT, GEOCHEMICAL SURVEY AT NESSA PROPERTIES IN DOMEYKO FAULT SYSTEM, AND NEW PROPERTY APPLICATION FOR HISTORIC GOLD COPPER SILVER ASSET & FORMER MINE

Gold Hart Copper Corp. has provided an update with respect to the drilling campaigns at its flagship Tolita asset. The company eagerly awaits assays from the diamond drill holes and has separately just completed seven shallower RC (reverse circulation) drill holes at Tolita's highest-grade trench. Gold Hart also provides an update on the comprehensive geochemical survey currently under way at the Nessa complex properties and announces that it has filed an application (pedimento) for an exploration mining concession on a historic gold-copper-silver asset and former mine to expand its portfolio of prime properties in Chile.

Update on diamond drilling at Tolita in Vicuna district

As prior announced, the company completed two diamond drill holes at the Tolita gold-copper-silver-molybdenum asset in the Vicuna district of Chile. Specifically, DDHTOL01 was drilled down to 1,053 metres and DDHTOL04 drilled down to 551 metres. Drill core from this diamond drilling campaign is at the laboratory in Copiapo and the company expects results over the coming weeks.

Completion of seven RC drill holes at Tolita targeting high-grade trench up to 52 grams per tonne gold equivalent with 3.99 per cent copper

As previously announced, in addition to Gold Hart's primary diamond drilling at its Tolita project, the company added an RC drill rig in order to target certain higher-grade opportunities closer to surface at Tolita. Specifically, Gold Hart is targeting its highest-grade trench, which grades 8.61 grams per tonne gold equivalent over 10 metres, including two metres at 10.40 g/t gold, 20 g/t silver and 2.88 per cent copper, and including grabs of 45.75 g/t gold, 28 g/t silver and 3.99 per cent copper (approximately 52 g/t gold equivalent).

Gold Hart recently opened up this high-grade trench with a bulldozer and exposed visible green and turquoise staining typical of copper minerals malachite and chrysocolla. Interestingly, the larger geophysical anomaly at Tolita appears to reach surface at or near this high-grade trench.

Gold Hart's vice-president, Rodrigo Diaz Tilleria, commented: "Our focus remains the large-scale porphyry potential of Tolita. But Tolita also offers the rare opportunity to target and hopefully prove a high-grade shallower component of the asset. In the Vicuna district, where one g/t gold on surface is rare, we have 52 g/t gold, and, simply put, we need to test it. RC drilling is significantly faster and cheaper, does not require water to operate, and is well suited to the characteristics of this target. Our current geological model assumes that this high-grade trench at Tolita may only be a fraction of the size of the larger system, but we do believe it hosts potential for generating higher-grade intercepts close to surface and therefore potential to add high-grade ounces, thereby demonstrating another facet to the Tolita asset." To that end, Gold Hart is excited to announce that the company has now completed seven RC drill holes at this high-grade trench. The company has today published a video from a recent site visit explaining the potential significance of this high-grade trench and associated rationale for the RC drilling.

Nessa copper-gold-silver complex -- comprehensive geochemical survey follows prior preliminary survey's high-grade results (copper up to 4.7 per cent and gold up to 9.7 g/t)

Gold Hart is also pleased to announce that the company has completed the collection of approximately 650 samples as apart of its first comprehensive geochemical survey at the Nessa complex just west of Kinross's La Coipa gold mine. This survey followed upon the success of the prior-announced preliminary geochemical survey, wherein several samples returned high grades of gold and copper. Specifically, seven samples graded 1.25 per cent to 4.73 per cent copper, including four samples exceeding 2.40 per cent copper. Twelve samples graded above one g/t gold, with six samples grading between 4.10 g/t and 9.74 g/t gold.

Gold Hart has had a team of eight geologists and assistants leading this geochemical survey at Nessa, and the company wishes to thank this team for their excellent work. This comprehensive geochemical survey initially targeted 500 to 1,000 samples, primarily within the Ringo claims of the Nessa complex. The campaign remains under way and the company hopes to be in a position to announce its completion in the coming weeks.

Gold Hart files application (pedimento) to expand its portfolio of properties in Chile

Gold Hart is also pleased to announce that the company filed an application (pedimento) for an exploration mining concession to expand its portfolio of prime properties in Chile. The application covers an area of interest in a historic mining district, which was mined intermittently in the past, and certain historical technical records reviewed by the company reference multiple legacy mineral inventory interpretations prepared by prior operator(s) (each referred to as a historic mineral resource), which are non-compliant within the standards of National Instrument 43-101, Standards of Disclosure for Mineral Projects. The property was mined more than a decade ago, and Gold Hart is aware of the presence of multiple historical underground workings, including adits/tunnels. Gold Hart has reviewed certain historical records that appear to have been prepared contemporaneously with or shortly following the period of mining activity, which suggest that the historic mineral resource estimates may have been derived from grades observed and/or sampled within these mined areas. Gold Hart has not yet obtained all historical documentation relating to the property and will continue efforts to identify, compile and review additional available information as it becomes accessible. Accordingly, any disclosure herein is based on the partial information reviewed to date and should be considered incomplete and is therefore not to be relied upon.

A pedimento is the initial filing in a court-supervised process that, if completed successfully, results in the constitution of an exploration mining concession. Under the Chilean mining code, a pedimento that is duly filed and prosecuted in compliance with applicable legal requirements generally affords its holder priority to pursue the constitution of an exploration mining concession over the area covered, subject to no overlapping prior filings and successful completion of the judicial constitution process before the competent Chilean mining court. One historic mineral resource estimated between 40 million and 50 million tonnes at 1.0 per cent to 1.2 per cent copper and gold grades between 0.5 and 1.0 g/t. Another historic mineral resource estimated approximately double the tonnage at similar gold and copper grades, in addition to silver of approximately 10 g/t. Utilizing current metal prices, the breakdown of the larger historic mineral resource on the property would be approximately 44 per cent gold, 43 per cent copper and 12 per cent silver, totalling over four million ounces of gold equivalent or over 1.5 million tonnes of copper equivalent, assuming broadly comparable metallurgical recoveries. Importantly, a qualified person has not done sufficient work to classify the historical mineral resource as current mineral resources or mineral reserves, and the company has thus far been unable to verify the reliability of either historic mineral resource. The company is not treating either historical mineral resource as a current mineral resource or mineral reserve, and the historical mineral resources are non-verified historical estimates prepared prior to the company's interest in the property. Gold Hart has not conducted its own analysis and intends to allocate a team of geologists in order to undertake a thorough review of the area covered by the application. The disclosure is provided solely as an indication of the property's exploration potential and to provide context for the company's acquisition rationale.

The application, once published in Chile's Boletin Oficial de Mineria, becomes part of the public record. However, the company must refrain from providing further specifics regarding the property and the area covered until the judicial constitution process is sufficiently advanced. There can be no guarantee that there are not any potential risks to completion of said process, and therefore no assurance that the company will be granted the property. In order to upgrade or verify the historic mineral resources as current mineral resources or mineral reserves, the company would have to review all project data, validate data quality, create a new geological model and then make an updated resource estimate. The historical mineral resources utilized categories materially different from current standards of mineral resources and mineral reserves.

The company's priorities have not changed as a result of the company's application for this property. The company's Tolita property remains the company's flagship asset. The company will promptly allocate a team of geologists and a modest capital budget in order to undertake a comprehensive review of the area covered by the property application from a geological perspective. The focus of Gold Hart remains the Vicuna district and its flagship Tolita asset, with the Nessa properties west of Kinross's La Coipa mine as a strong secondary complex. To that end, the company today announces that it has completed seven RC drill holes at the high-grade trench of the Tolita property in the emerging Vicuna district of Chile, north of Lundin's Caserones. Additionally, the company is in the process of completing the first comprehensive geochemical survey at the Nessa complex of properties in the Domeyko fault system of Chile, made famous for hosting Escondida, Chuquicamata and Collahuasi mega-assets.

Tolita flagship gold-copper-molybdenum-silver porphyry target in Vicuna district -- diamond drilling program

Gold Hart geologists -- including senior geologists Dr. Jose Frutos, Enrique Viteri, Jonathan Warner and Mr. Diaz -- carefully designed a 10-hole drill plan in order to optimally test Tolita as a potential gold-copper-molybdenum-silver porphyry target. As prior announced, Gold Hart first attempted to drill target No. 1 (known as DDHTOL01) in March, 2025, but, after difficulties were encountered under tight time constraints, the team instead elected to drill DDHTOL02 and DDHTOL05. These holes were approximately 600 metres each and encountered approximately 360 m and 230 m of gold, copper and molybdenum porphyry mineralization, respectively. Recently, Gold Hart returned to target No. 1 DDHTOL01 with a more powerful drill rig and completed a 1.053-kilometre drill hole. Interestingly, the core continued to display encouraging characteristics, with multiple intervals showing strong hydrothermal alterations and mineralization consistent with a fertile porphyry-style environment. Gold Hart's geologists observed multiple generations of veinlets and stockworks with varying intensities over intervals up to several hundred metres, banded veinlets with thicknesses of several centimetres, and, locally, chalcopyrite and bornite mineralization has been recognized in several of these veinlets. Gold Hart's geologists do not believe the drill intercepted the same fault that caused a sterile zone in the middle of the initial two diamond holes. More recently, Gold Hart completed a follow-on diamond drill hole (DDHTOL04), which reached 551 m. In addition to the diamond drill campaign, Gold Hart launched a campaign of RC drilling at its high-grade trench -- with up to 52 g/t gold equivalent, including 3.99 per cent copper on surface. The objective of the RC campaign is to demonstrate higher-grade pockets close to surface, beyond the larger porphyry target. Gold Hart has already completed three RC drill holes.

Consequently, there await at least another six or seven highly attractive diamond drill targets identified across the asset area. These targets are supported by a combination of geophysical characteristics, including chargeability and conductivity, strong geological and structural controls, as well as coincident geochemical anomalies.

Tolita is a very large target, with an original 2.5-square-kilometre geophysical anomaly recently expanded by 76 per cent to 4.5 square kilometres. The Tolita gold soil sample geochemical surface halo (an approximation of gold on surface above 0.1 g/t) alone is nearly 28 hectares and the Tolita property is 3,476 hectares equal to approximately 34.8 square kilometres.

Furthermore, as recently confirmed in a follow-up geophysical survey, the Tolita geophysical anomaly expands in both size and intensity at depth, which could translate into an enlarging system at depth. Per the third party geophysicist who conducted the survey: "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."

Porphyry systems in Chile and in the Vicuna district specifically can prove larger and richer as they progress deeper. For example, in Chile, Atex Resources announced one of its most significant drill holes ever (ATXD25C), which graded 2.72 per cent copper equivalent, beginning at 1,558 m and ending at a depth of 1,722 m. In the Vicuna district, NGEx published "DPDH028, the best hole drilled to date as Lunahuasi, which was drilled deeper and to the west of all previous holes," which included multiple highly compelling intercepts, including the deepest measuring 53.5 m (1,219.5 m to 1,273.0 m) grading 7.79 per cent copper equivalent.

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.

Gold Hart recently expanded the Nessa property by 330 per cent (3.3 times) from an initial property size of 4,100 hectares up to a current land position of 13,500 hectares (135 square kilometres). The Nessa complex is just south of the massive Codelco El Salvador-Portrerillos copper mining and smelting complex, one of the oldest copper smelting facilities in the country. Nessa is also surrounded by major miners Newmont, Solaris, JX Nippon and Anglo American and sits just northwest of Rio2's Fenix gold deposit and just west of Kinross's La Coipa gold mine.

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 g/t gold, 3.25 per cent copper and 958 g/t 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. Gold Hart recently completed a preliminary geochemical survey and obtained additional high-grade samples, including up to 9.7 g/t gold, 968 g/t silver and 4.7 per cent copper on surface.

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 m/5.6 km) with the highest-grade trench returning grades up to 52 g/t gold equivalent, including 4 per cent copper. Tolita has undergone helicopter magnetic surveys, which identified four unique anomalies as well.

In 1996, a third party company optioned the property and drilled three short 200-metre RC holes, without any geophysics, and yet still hit gold and copper in all three holes, including long intercepts of gold and copper (150 m and 164 m, 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 m 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 that is near surface and almost 2.5 square kilometres in size (recently expanded to 4.5 square kilometres) and "interpreted as a copper-gold or gold-copper porphyry system that certainly warrants additional exploration and drilling." Gold Hart Copper has therefore launched diamond drilling and is fully financed for this planned campaign.

In the spring of 2025, the company completed two holes of approximately 600 m 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.

Gold Hart recently hosted a site visit, which included tours of the Tolita and Nessa assets. Gold Hart's board and advisory board members, including John R. Baird, Mark Kucher and Aleta Shiff, were also in attendance.

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 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 Copper is fully financed for its planned drill campaign.

Gold Hart's team of geologists was personally involved in pioneering exploration in the region, leading to some of its greatest gold, copper and silver deposits and includes the country's former Geological Survey national deputy manager, Dr. 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 Norte Abierto/Cerro Casale, the largest gold-copper discovery in Chile, acquired by Barrick and Newmont (Goldcorp) with reserves and resources of 50.6 million ounces of gold (0.53 g/t), 13.4 billion pounds of copper (0.20 per cent) and 218 million ounces of silver (2.3 g/t).

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 km. Kinross's La Coipa gold mine sits just east of Nessa.

Qualified person

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

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