
20-21/5/2023
Paralelní Polis brings you another Pizza Day Prague!
The pizza-to-pizza conference is a call to arms for advocates of Bitcoin as peer-to-peer technology.
A dozen years have passed since the first trade of pizza for Bitcoin. Today, we celebrate the widespread popularity and adoption of this delicious dish. It has been embraced by individuals, businesses, and even national governments. We are truly witnessing the rise of the hyper-pizzanization of our world.
Yet, just as the pizza industry has evolved from sit-down restaurants to delivery services to frozen pizzas, the Bitcoin ecosystem has similarly moved from face-to-face transactions to third-party intermediaries. But just as frozen pizzas can never truly replace the experience of a freshly-made pie, third-parties can never fully replace the trustless nature of P2P transactions.
We believe that by using Bitcoin as intended, a peer-to-peer electronic cash system, we can create a more secure, efficient, and fair financial system. We reject the need for third parties and spofs, and extol cryptography to empower truly trustless systems. P2P technologies not only enable more robust and smooth economic structures, but most importantly they bring global coordination without the need for hierarchies. Still, we must resist the temptation to build walls and instead strive to create bridges, fostering a culture of technological meritocracy and collaboration.
As contemporary cypherpunks, it is our duty to fight for the ideals of decentralization and trustlessness in the face of challenges from governments, the public, and even within our own communities. As Bitcoin allows us to connect directly with one another without the need for trusted third parties, so too can we envision a future where pizza enthusiasts can savor their favorite dish without intermediaries.
Join us in the fight for a decentralized future where the power of peer-to-peer technology enables true pizza freedom for all. Let us embrace the power of the pizza-to-pizza revival and celebrate the genuine spirit of the original Bitcoin pizza transaction.
pizza-to-pizza || p2p || peer-to-peer
Tickets
Come celebrate with us and become a part of this unique experience!
Speakers

Rigel Walshe
Software developer at Swan Bitcoin
Christian Lewe
Not much to say here. I have been part of Blockstream Research since early 2022. My focus is on Simplicity, Miniscript, formal verification, and zero-knowledge proofs. I love to dive into topics that are complicated and easily misunderstood, making sense of them all. One of my goals is to make the widespread adoption of reliable, formally verified code a reality.

Mário
Mário is a hacker and researcher focused on making the crypto ecosystem more efficient and anonymous. As a member of Paralelní Polis, co-founder of Bordel Hackerspace, and the driving force behind Pizza Day Prague, Mário educates about tools of cryptoanarchy in local communities with a focus on onboarding via Lightning and p2p exchange. He is a vast enjoyer of FOSS, parallel economy, and trolling bitcoiners.

Mário Havel
Mário is a hacker and researcher focused on making the crypto ecosystem more efficient and anonymous. As a member of Paralelní Polis, co-founder of Bordel Hackerspace, and the driving force behind Pizza Day Prague, Mário educates about tools of cryptoanarchy in local communities with a focus on onboarding via Lightning and p2p exchange. He is a vast enjoyer of FOSS, parallel economy, and trolling bitcoiners.

Eric Wall
Chief investment officer at a Swedish hedge fund Arcane Crypto – and one of Crypto Twitter’s favorite trouble stirrers. He’s been trading bitcoin since Mt. Gox (and lost his money there), he worked as a crypto guy in the legacy fintech firm Cinnober, and now he’s advising a hedge fund on crypto investments. During his time in crypto and mainstream finance, Eric saw a lot and has a lot to say.

Sergej Kotliar
Sergej is the CEO and Founder of Bitrefill. Based in Sweden, Bitrefill allows users to buy almost anything with Bitcoin through the sale of digital gift cards, bill pay, and mobile refills. Bitrefill is the number one place where people use their bitcoin and is available in over 150 countries. Bitrefill is also a thought leader in the Lightning space – from being the first major merchant to accept real-money payments to pioneering concepts for Lightning-native services such as the first Lightning Service Provider “Thor”.

Ben Arc
Ben is a bitcoin hobbyist, educator, enthusiast, and creator of LNbits, Where39 (Bip39-based geolocation protocol), LNPoS (cheap DIY lightning point of sale), Bowser Wallet (DIY hardware wallet, with diversion game), twitter-nostr (Twitter clone on Nostr), Gerty (DIY node monitor), LNURLTrigger (turn stuff on with bitcoin), socialist.

Katie
Mother of lil Winston, Paralelní Polis, Pizza Day Prague & Hackers Congress
Contact me if:
- you want to become a speaker,
- you want to become a partner,
- you represent a company and want to purchase tickets for your employees,
- you have any questions or suggestions for improvement,
- you’re lonely & need a friend, jk.

Openoms
Openoms gained recognition in the Bitcoin community thanks to his rich contributions to free and open-source projects and education about them. As a contributor of the Raspiblitz (FOSS Bitcoin and LN node project) and a recent member of the Galoy team (Bitcoin Beach Wallet), he will teach you about best practices and current tools available to start a bitcoin-based community.


Sjors Provoost
Sjors is a software developer based in Utrecht, Netherlands. He has been working in the Bitcoin industry since 2014 and became a Bitcoin Core contributor in 2017. He is a co-host of the Bitcoin Magazine podcast Bitcoin, Explained and the author of the book Bitcoin: A Work in Progress.

Anita Posch
Anita is a Bitcoin educator, host of the Anita Posch show, author of (L)earn Bitcoin, and executive director of Bitcoin for Fairness an educational non-profit organization, which is fostering grassroots adoption of Bitcoin in emerging countries. Anita’s goal is to bring Bitcoin as a tool for civic resistance and freedom to human rights activists, freedom fighters, and individuals caring about their digital privacy and self-sovereignty.
Venues - Paralelní Polis & La Fabrika
Unique industrial multi-purpose professional event space in the heart of Holešovice district in Prague ideal for presenting various projects and hosting community events.
Organizer
Paralelní Polis is a one-of-a-kind nonprofit organisation that brings together art, social sciences, and modern technologies. The ideas of liberty, independence, and innovative thinking and development of society are the main underlying foundations the whole project is built upon.
The project intends to remain state free as it operates entirely without support from the government, and most of the funds come from voluntary contributions of our donors and partly from commercial activities such as running a unique coworking space and the world’s first bitcoin-only cafe.
It was founded by members of a contemporary-art group Ztohoven, and Slovak and Czech hackerspaces. Its main goal is to promote economic, social and digital freedom. We try to be a vocal voice of freedom in order to shape the public discourse, and ultimately work towards a freer future.