Get Hands-On with the Future of Freedom Tech

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.

Buy your tickets now

Full program coming soon

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.

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.

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.

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

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

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

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

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

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

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

Are you interested in presenting?

Program curated by Pavol “Stick” Rusnák

DEADLINE for application: End of March

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.

Speaker Application

Who was there in 2024?

Ben Arc

Bitcoinswitch & Nostr Hardware workshops

Martti Malmi

Nostr: Technical Hurdles

Peter Todd

One-Shot Replace-by-Fee-Rate

Pavol “Stick” Rusnák

DHD program curator

Aleks Svetski

Satlantis

SeedSigner

Growing a FOSS Project in the Bitcoin Space

Rockstar Dev

Cypherpunk and Privacy Socratic Discussion

Ioni Appelberg

Bitcoin Is Kardashev Type 1 Money

Past projects

Human Rights Foundation

SatoshiLabs

Bitcoin Core

Nostr

SeedSigner

bitcoin.design

BTCPay Server

mempool.space

Don’t miss out on this extremely limited opportunity.
Hard cap of 300 tickets only!

Show all

dev/hack/day

For Builders•1 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.

Book a room in Hotel Duo

Hotel DUO

Teplická 492, 190 00 Praha 9

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