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Get Hands-On with the Future of Freedom Tech

dev/hack/day

June 18, 2025
Hotel DUO, Prague
Are you ready to stay at the forefront of Bitcoin innovation?

Dev/Hack/Day is a dedicated one-day, in-person-only conference happening right before BTC Prague 2025—designed for Bitcoin devs, hackers, tech enthusiasts, and curious minds who want to dive deep into breakthrough ideas and cutting-edge technology.

💡 What to expect?
🚀 Tech talks unveiling the latest developments
🔒 No recordings—privacy first
🤝 High-signal networking with top builders & experts using Brella app
🍽️ Great food, great company, great afterparty

If you're serious about Bitcoin development, hacking, and experimentation, this is where you need to be.

See you in Prague. No FOMO, just hardcore Bitcoin tech.
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On-Chain – The Heart of Bitcoin

Dive deep into Bitcoin’s core. This track unpacks the magic of consensus, security, smart contracts, and the decentralized ledger that powers the entire ecosystem. Get ready to unravel the secrets of on‑chain technology that started it all.

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Layer 2 – Scaling the Future

Discover how Bitcoin is breaking through its limits of scalability and efficiency. From the Lightning Network to innovative solutions like Ark, this track is all about building on Bitcoin to boost speed, reduce costs and unlock new capabilities.

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Ecash – Redefining Digital Money

Explore the next evolution of cash – bridging the gap between traditional money and a decentralized future. Focusing on protocols like Cashu and Fediminit, this track explores how digital cash systems are transforming micropayments, privacy and everyday transactions.

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Users – Bitcoin Made Beautiful
It’s not just about the tech! It’s also about making Bitcoin accessible for everyone. This track shines a spotlight on usability and intuitive design by exploring innovations that simplify interactions and enhance user experience.

How did people like dev/hack/day?

DHD is easily one of my fav events of the year. 🤩 I was amazed by the abundance of excellent content and building that took place during the dev/hack/day. Getting all these legendary hackers and builders in one meatspace to exchange ideas, learn and hang is gods work. 🙏

Ben Arc
FOSS advocate
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The dev/hack/day was the most insanely dense pre-event to a conference ever. The quantity and quality of attendees were outstanding, and I cannot wait for this year's edition.

Max Hillebrand
Wasabi
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You can go to BTC Prague and listen to what you want to hear. Or you can spend one extra day to go to the dev/hack/day and actually learn something about the tech. Doesn't matter if you think you're a "newb" or you're not technical. Challenge yourself! I didn't let my fine arts degree stop me.

Peter Todd
Cryptochronomancer
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I was honored to curate this amazing day of 60 high-profile talks and workshops by bitcoin hackers from around the world. I look forward to this year's edition!

Pavol Stick Rusnák
SatoshiLabs
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The dev/hack/day in Prague is the perfect place to connect with the bitcoin open source community. It feels like home. Highly recommended.

RaspiBlitz
Full Node Dev Team
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The dev/hack/day was the best part of last year's conference: highly technical, low noise, great location. 10/10 would go again!

Alekos Filini
Bitcoin Dev Kit
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The dev/hack/day was a high signal event for builders in the bitcoin ecosystem and a great opportunity to geek out with shadowy super coders.

Aljaz Ceru
Bolt Observer
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Are you interested in presenting?

Program curated by Pavol “Stick” Rusnák

DEADLINE for application: End of March

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Pavol “Stick” Rusnák
Pavol, also known as stick, is an all-around hacker, open-source enthusiast and technology geek. He’s been involved in open development of various software and hardware projects since he can remember and no technical challenge is big enough for him. When he’s not currently investigating some emerging technologies or digging into hard core cryptography, he’s probably trying to bring some new-media interactive art projects to life. He first learned about Bitcoin in 2011 when he participated in the organization of European Bitcoin Conference in Prague.

Speakers 2025 - in progress

Pavol “Stick” Rusnák
Pavol “Stick” Rusnák
DHD program curator
Max Hillebrand
Max Hillebrand
Cypherpunk
Rahim Taghizadegan
Rahim Taghizadegan
Nostr & Sovereignty
deedsats
Aleksandar Svetski
Aleksandar Svetski
Satlantis
Jordi Llonch Esteve
Jordi Llonch Esteve
Satlantis
Walter Maffione
Walter Maffione
KaleidoSwap
Tomek K
Tomek K
Alby
Stephan Vuylsteke
Stephan Vuylsteke
Brink
Stephan (Emzy) Oeste
Stephan (Emzy) Oeste
Emzy
Ross Savage
Ross Savage
Breez
ghost43
ghost43
Electrum
Erik De Smedt
Erik De Smedt
Second
Daniel Te
Daniel Te
Evolu
Alekos Filini
Alekos Filini
TwentyTwo
Marco Argentieri
Marco Argentieri
Ark Labs
Philipp Hoenisch
Philipp Hoenisch
Lendasat
Carlos García Ortiz
Carlos García Ortiz
Bleskomat & Satoshilabs
Djuri Baars
Djuri Baars
BTClock
Roman Zeyde
Roman Zeyde
Trezor
Vincenzo Palazzo
Vincenzo Palazzo
Ocean
Martin Habovštiak
Martin Habovštiak
Base Layer
Programmer
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Past projects

Human Rights Foundation
SatoshiLabs
Bitcoin Core
Nostr
SeedSigner
bitcoin.design
BTCPay Server
mempool.space
Wasabi Wallet
LNbits
Stratum V2
Trezor
Blink
Cashu
RaspiBlitz
Electrum
Boltz
TwentyTwo
Ark
Utreexo
Electrs
Bleskomat
Liberation Travel
Show more

dev/hack/day ticket

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Don’t miss out on this extremely limited opportunity.
Hard cap of 300 tickets only!
Show all
dev/hack/day
For Builders1 days
June 18, 2025
Wed
135 €
~ ... sats
Meet 100+ open-source devs
40+ talks, workshops & seminars
Networking app
Food & drinks during the whole day
Cutting-edge technologies
In person Q&A
Be the first to learn new stuff
Only 100% positive feedback
Geeky hacking, zero noise, maximum privacy
After party
Buy a ticket
5% discount when paid in bitcoin.

Venue

Hotel DUO is a full-service hotel that offers a wide range of high quality leisure and business services for a good value. All meeting rooms available in the hotel are booked exclusively for dev/hack/day on June 18.

Hotel DUO
Teplická 492, 190 00 Praha 9

How to get to the venue?

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Metro
Line C – station Střížkov – 5 min
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Bus
Line 151, 152, 166, 177, 183, 201 – stop Střížkov – 5 min
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Car
Paid outdoor parking available at the hotel site
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Taxi
You can use Uber, Liftago, Bolt & standard taxis in Prague