About Printer
Bitcoiner from Austria.
Self-Custody, DIY Hardware, Solo Mining. He helps you build a setup that truly fits your life.
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30+
Training(s)
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500+
Contacts
"Bitcoin since 2015, Noderunner since 2020, Full-Time Bitcoiner since 2022."
I am Printer, from Austria. In 2021 (Block 698517) I founded Go Brrr, a small shop for Bitcoin hardware. No sponsors, no investors — simply because I missed what I would have needed myself. Today I sell SeedSigner, ColdQR Titanium Backup Plates, mining accessories, and PSU breakout boards for plebs who want to build their own mining rig.
In addition, I run Go Brrr Pool, a solo mining pool based on CKPool-Solo, organize "Bitcoin on the Farm" with friends in Austria, and work closely with the creator of SeedSigner. I wrote the German SeedSigner Independent Custody Guide and translated it into English.
What you will actually learn in my trainings
Self-Custody is not one-size-fits-all. What works for me may not work for you. My goal is to work with you to find out which setup fits your life so that you can store your coins both securely AND conveniently. If only one of these two factors is met, you don’t have the right setup. Security that you can’t maintain in everyday life is just as useless as a convenient setup that collapses at the first storm.
I don’t sell you anything I don’t use myself. Every piece of hardware I recommend, I have tested myself — often designed or built it myself. No marketing, no affiliate tricks, no buzzwords.
- ✅ Self-Custody and Hardware Signers – Focus on SeedSigner and other DIY open-source solutions. I can also cover ColdCard, BitBox, Trezor and others, but my passion is for devices that give you maximum sovereignty and where you understand what’s happening inside.
- ✅ Backup Strategies – Seed backups on steel and titanium, multisig, passphrase, SeedQR and Encrypted SeedQR. We build a setup that works even in the worst case without you.
- ✅ Own Node – From the first sync to a fully equipped setup. Umbrel, Start9, Raspiblitz or custom on Proxmox. Including Tor, I2P, Electrum Server (Fulcrum), BTCPay Server, Mempool and everything else you want to add.
- ✅ Solo Mining – Mining solo with Bitaxe, FutureBit Apollo or larger hardware is not just a hobby, it’s a statement. I’ll show you how to build your setup — from power connection through the PSU to pool configuration.
- ✅ Lightning – Your own Lightning node with LND or Core Lightning, BTCPay Server for your shop or club, Bolt Cards, Nostr Zaps. Here too: what you really need, not what sounds the hippest.
- ✅ Privacy – Self-Custody without privacy is only half the story. CoinJoin, Chain Hopping, your own mempool instance, no-KYC sourcing. We build a workflow that matches your threat model.
I speak plainly with you, no buzzwords, no FUD, no sales pressure. We start where you are — whether you’re a complete beginner or already have a few coins on an exchange. We go through exactly what you really need, and in the end you understand what you’re doing, you control your keys, and you sleep soundly again.
Technology Stack
The Coldcard is for me the most secure hardware wallet on the market. It works completely air-gapped and supports multisig as well as very strong passphrases. In my trainings we build real setups and learn how to protect your seed phrase to the maximum. In follow-up trainings we go deeper into advanced multisig, PSBT and integration with your own nodes.
The Bitaxe is a great entry into solo mining and shows how Bitcoin mining works. We build it together and connect it directly to your node. In advanced courses we optimize hashrate, cooling and look at profitability as well as custom firmware.
BITMAIN Antminers are the workhorses for serious mining. I show you how to run them efficiently and combine them with pools or solo mining. In follow-ups you learn overclocking, power optimization and how to build small mining farms.
BTCPay Server is my favorite solution for real Bitcoin payments without third parties. We install it on your own server and connect it with Lightning. In deeper trainings we build complex setups with webhooks, ERP integration and automatic invoices.
The Seedsigner is an affordable, open-source signing device that pairs perfectly with the Coldcard. We build it together and use it for secure transactions. In follow-up modules we cover air-gapped workflows, QR code security and multisig with multiple devices.
RaspiBlitz is my go-to full node. It is stable, Lightning-capable and perfect for getting started. In the courses we build it live. In advanced trainings we professionally configure Lightning channels, watchtowers and backups.
Mempool.space (self-hosted) is the best tool to understand the blockchain in real time. We install your own version. In deeper courses you learn fee optimization, RBF, CPFP and how to perfectly time your transactions.
Bitcoin is not just technology, it is real, hard money. We talk about sound money, stacking strategies and self-custody. In follow-ups we cover taxes, accounting with BTCPay and long-term wealth planning.
Prices
Printer will issue you a proper invoice for the trainings, courses and sessions. All prices include 20% VAT.
990,00 EUR incl. 20% VAT
instead of 1,237.50 EUR incl. 20% VAT
Group Course (English speaking)
- On-site in Kärnten & surrounding area
- 8 hours + break – intensive & practical
- 5–7 participants (lots of personal support)
- Extensive printed training materials
- Direct discounts on Bitcoin hardware at BitBuy
- Access to follow-up modules & community
- Hands-on: Real hardware building (SeedSigner, Bitcoin Nodes etc.) + live debugging
Perfect for networking and learning together. You go home with working hardware and new knowledge.
690,00 EUR incl. 20% VAT
instead of 862.50 EUR incl. 20% VAT
Intensive Training (English speaking)
- Personal on-site in Kärnten & surrounding area
- 1:1 intensive support – completely tailored to you
- 8 hours + break – maximum depth
- Extensive printed materials + video follow-up
- Exclusive hardware discounts + setup help
- Your own Lightning setup at the end of the day
- Pro Level: We dive deep into the subject and develop individual strategies
The best choice if you want to go really deep and implement everything immediately. I adapt the day 100% to your goals.
420,00 EUR incl. 20% VAT
instead of 525.00 EUR incl. 20% VAT
Intensive Training (English speaking)
- Live remote via Zoom / Teams
- 1:1 personal – full attention
- 3–4 hours focused on your topics
- Digital materials + recording
- Direct hardware discounts
- Follow-up support included
- Flexible: Exactly the topics that will move you forward
Ideal for quick, deep progress without travel. Perfect for specific problems or deepening knowledge.
Ready for your next Bitcoin level?
Dates available on request – weekend workshops also possible.
Create Account & Request Appointment NowOr book one of the courses above directly.
