As featured in
The numbers speak for themselves.
* Past performance is not an indicator of future results. The BTC figure is a live model-based estimate (not a metered value).
Co-Ownership instead of Cloud Mining.
You hold shares in a Swiss AG, with the same rights as the founders.
Co-Ownership
You hold shares in a Swiss AG, registered in the commercial register, with voting rights at the Annual General Meeting. Same share class as the founders. No preference rights, no special classes.
Structural Profitability
We currently produce Bitcoin for ~$56,478, the market price is …. Made possible by 100% hydropower at $0.057/kWh, roughly 40% cheaper than the global average.
Sustainability: ecological & economic
100% hydropower. The waste heat from our miners (70–80°C) is intended to dry tropical fruit and create a second revenue stream. The drying facility is currently under construction. Goal: reduce our energy costs by up to 25%. Ecologically clean. Economically more robust.
White Glove Service
We handle everything, site selection, setup, operations, maintenance, reporting. You receive Bitcoin. That's it. From CHF 50,000: a personal contact and direct access to Sascha.
Radical Transparency
Monthly reports. Real-time dashboard. Quarterly Annual General Meetings with voting rights. Open books. You always know where your capital is and what it's doing.
What GM3 Technologies AG operates.
Real infrastructure in Paraguay.
Land. Energy contracts. Data center. Hardware.
GM3, Paraguay
Bitcoin Mango, under construction
The waste heat from our miners (70–80°C) is intended to feed a drying facility currently under construction. Goal: reduce energy costs by 25%, from $0.057 to ~$0.043/kWh, and build a second revenue stream independent of the Bitcoin price.
What investors earned in 2025.
First full operating year. Without fruit drying. At 50% capacity.
With full expansion
With active fruit drying and 100% capacity: target ROI 10–20% for investors, depending on entry timing.
* Past performance is not an indicator of future results. Investments in digital assets involve risks.
Swiss precision. Bitcoin returns.
Not an app. A Swiss Aktiengesellschaft.
Swiss Holding + Subsidiaries
GM Data Centers AG is the Swiss holding company (CHE-200.150.787, Zug). Each facility has its own subsidiary, GM3 Technologies AG, GM4 Technologies AG.
Swiss AG + BaFin WIB
Swiss Aktiengesellschaft under the Swiss Code of Obligations. A WIB is available for the German market.
Same share class, no preference rights
GM Data Centers AG (holding) holds the same share class in each subsidiary as external investors. No preference rights, no special rights for the holding company. What you hold, the company holds too, without extra margins or preferential distributions.
Conservative capital management
No overleveraging. We use asset-backed loans exclusively for scaling, never to finance ongoing operations.
First tokenized company on Bitcoin
Our shares are tokenized and registered on Bitcoin. Not exchange-traded. Private transfer possible after the lock-up period.
Voting rights at the Annual General Meeting
Every investor votes, on expansion, dividend policy, key decisions. This is not a promise. It's written in the articles of association.
We lost money ourselves. Then we did it better!
Sascha has been investing in Bitcoin since 2012. Over the years he invested in various mining projects and learned what goes wrong: lack of structure, no alignment between provider and investor, zero transparency.
In 2022 he founded Green Mining with a clear thesis: a mining company where investors are true co-owners, with the same rights and the same share class as the founders.
Valentine brings 15 years of experience in communications and consulting. She lost capital herself in the Celsius collapse, and therefore knows the questions investors ask from personal experience.
She has personally spoken with over 250 of our investors. The result: NPS +50.
Our investors rate us 4.6 out of 5.
“The concept of intelligent, consistently cost-optimized use of sustainable energy sources and the compelling personalities of the two founders won me over.”
“I joined GM3 because Valentine and Sascha present a compelling mission of growth and sustainability. And in a world full of misinformation about Bitcoin, I know I'm part of correcting the story.”
“I think GMD is a great way to take part in the development of Bitcoin sustainably. Because I know Valentine as a trustworthy co-founder and also personally value several of my fellow investors, I was ultimately convinced.”
“It's fascinating to be part of this way in bitcoin mining.”
Personal views of individual investors; not investment advice.
Know someone who should be producing Bitcoin?
We reward referrals. reach out to us.
36 pages. No hype.
The honest guide to Bitcoin mining as an investment. From a founder who first lost CHF 250,000.
- ✓Why the power price decides profit or loss
- ✓Home mining, pools, hosted and cloud mining, compared honestly
- ✓Case study: a hydropower site in Paraguay
- ✓The due diligence checklist to check any provider
Don't take our word for it. Read first, decide then.
Frequently asked questions.
The exact opposite. With cloud mining you own nothing, no contracts with real rights, no ownership. With Green Mining you buy shares in a Swiss AG, registered in the commercial register. With voting rights. With quarterly reports. With the same rights as the founders.
We currently produce Bitcoin at ~$56,478 (as of July 2026). When the price falls, miners with higher energy costs shut down first. That reduces global hashrate, difficulty drops, and so does our production cost. With a low-cost energy contract, we're among the last to shut down. Once the drying plant is running, selling its heat to food companies is meant to add a second revenue stream. No overleveraging.
Portal access is free, you get access to live data, monthly updates, and the community without investing anything. Want to become a co-owner? In Switzerland and other countries, co-ownership starts from CHF 5,000. For residents of Germany it starts from CHF 1,000 (4,000 tokenised Swiss shares, as set out in the Wertpapier-Informationsblatt). For tickets from CHF 50,000, you speak directly with Sascha.
Every quarter we close the books. Based on the company's profit, distributions go directly to your own wallet. The financials are shared transparently. No intermediary. No platform holding your keys.
Co-Mining means you become a shareholder in the mining facility instead of running your own solo setup. Resources and expertise are pooled to increase efficiency, earnings are distributed proportionally to all shareholders, without you having to deal with hardware, maintenance, or market fluctuations.
Ready for Bitcoin mining that's yours?
Your entry. Your pace.
Get free portal accessSee GM3 live: uptime, production, reports and updates from Paraguay.
Learn first:E-bookHow it worksFrom CHF 50,000: talk to the founders