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bitcoin++ Floripa 2025, hack+play edition

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Day 1 Wed · Feb 19 Day 2 Thu · Feb 20 Day 3 Fri · Feb 21 Day 4 Sat · Feb 22

Doors10:00 AM

Breakfast10:00 AM

Lunch12:00 PM

Coffee3:00 PM

Time

Main Stage

Talks Stage

Workshops Stage

10AM

11AM

12PM

1PM

2PM

3PM

4PM

5PM

keynote

Conference Kickoff

niftynei

Time: Wed, Feb 19 · 11:00 AM – 11:15 AM
Location: Main Stage
Type: keynote
Duration: 15m

Speakers

niftynei

bitcoin++

X Nostr GitHub Instagram Website

keynote

Announcement from Vinteum

Lucas Ferreira

Time: Wed, Feb 19 · 11:15 AM – 11:20 AM
Location: Main Stage
Type: keynote
Duration: 5m

Speakers

Lucas Ferreira

Vinteum

X Website

keynote

B4OS Updates

Dulce Villarreal

Time: Wed, Feb 19 · 11:20 AM – 11:30 AM
Location: Main Stage
Type: keynote
Duration: 10m

Speakers

Dulce Villarreal

B4OS

X Website

talk

Icebreaker

niftynei

Time: Wed, Feb 19 · 11:30 AM – 12:10 PM
Location: Main Stage
Type: talk
Duration: 40m

Speakers

niftynei

bitcoin++

X Nostr GitHub Instagram Website

workshop

building grugpool: the most simple, dumb but useful l2 with ctv

stutxo

Time: Wed, Feb 19 · 1:00 PM – 2:00 PM
Location: Main Stage
Type: workshop
Duration: 1h

walk through how to build a simple coin pool with ctv, create our own pool and explore how to make it in to a useful l2. requirements: Rust installed, payment pool repo: https://github.com/stutxo/op_ctv_payment_pool

Speakers

stutxo

char.network

X GitHub Website

workshop

Build Your Own Coinpool, No Forks Required

Super Testnet

Time: Wed, Feb 19 · 2:00 PM – 3:00 PM
Location: Main Stage
Type: workshop
Duration: 1h

Learn what a coinpool is, how it improves bitcoin, and how you can earn money by running one. Then *create* a coinpool and experience firsthand how a next-generation bitcoin wallet might look and feel.

Speakers

Super Testnet

Independent

X Nostr GitHub

workshop

Stable Channels using LDK and Rust

Tony Klausing

Time: Wed, Feb 19 · 3:30 PM – 4:15 PM
Location: Main Stage
Type: workshop
Duration: 45m

In this talk / workshop, participants will learn about different approaches to stablecoins on bitcoin rails. Then, we will dive into the technology behind Stable Channels, including learning about / using LDK Node, Mutinynet and exchange price feeds to create a Rust app. The talk or workshop will use a CLI or Desktop App in the workshop, we will create Lightning nodes and channels, and do payments between them. We will then create a Stable Channel and watch the stability mechanism in action. Stable Channels is an open-source project aimed at bringing stabilized bitcoin-backed dollar balances to the Bitcoin Lightning Network. Stable Channels tackles the issue of bitcoin's price volatility by allowing users to "peg" some of their bitcoin value to the value of a fiat currency, like the dollar. This is achieved in a decentralized and self-custodial fashion using the Lightning Network.

Speakers

Tony Klausing

Stable Channels

X Nostr GitHub Website

talk

How BitVM works: emulating covenants and a 1-of-N trust-minimized bridge

Jose Storopoli

Time: Wed, Feb 19 · 4:15 PM – 5:00 PM
Location: Main Stage
Type: talk
Duration: 45m

Will provide participants with strong intuitions how BitVM works under the hood in securing a 1-of-N trust-minimized bridge to a sidesystem.

Speakers

Jose Storopoli

Alpen Labs

X GitHub Website

workshop

Lightning Node Transaction Tutorial

Marcello Pinsdorf

Time: Wed, Feb 19 · 1:00 PM – 2:00 PM
Location: Talks Stage
Type: workshop
Duration: 1h

Explain the on chain transactions created by a Lightning Node during the life cycle of a channel , create them from scratch and broadcast them on bitcoind on regtest mode. https://github.com/MPins/lightning-tx-tutorial

Speakers

Marcello Pinsdorf

X Nostr GitHub

workshop

PGP: A Must-Have Tool for Every Bitcoiner and Hacker

jaonoctus

Time: Wed, Feb 19 · 2:00 PM – 3:00 PM
Location: Talks Stage
Type: workshop
Duration: 1h

Explore the history of cypherpunks and learn how PGP revolutionized digital privacy — because privacy is not a crime. This hands-on workshop will teach you how to communicate securely.

Speakers

jaonoctus

ZBD

X Nostr GitHub Website

talk

Panel: Getting a Grant to Work on Bitcoin Open Source

Nickolas Goline, Dulce Villarreal, Maurice Poirrier, Bruno Garcia

Time: Wed, Feb 19 · 3:30 PM – 4:15 PM
Location: Talks Stage
Type: talk
Duration: 45m

Join Dulce from B4OS, Nickolas of NLightning, Maurice of B4OS, and Bruno from Vinteum to talk about their experience with picking a project, applying for a grant, and managing reports and grant timelines.

Speakers

Nickolas Goline

OpenSats

X GitHub Website

Dulce Villarreal

B4OS

X Website

Maurice Poirrier

B4OS

X Nostr GitHub Website

Bruno Garcia

Vinteum

X Nostr GitHub Website

workshop

Base58’s Bitcoin at Work(shop)

Lorenzo Maturano, niftynei

Time: Wed, Feb 19 · 1:00 PM – 3:00 PM
Location: Workshops Stage
Type: workshop
Duration: 2h

Formerly known as the LARP, this two hour workshop will answer the question: how does bitcoin work? What’s a bitcoin transaction? In this fast paced, group game we’ll make transactions, and build blocks. Will your node mine the most bitcoin? Come find out.

Speakers

Lorenzo Maturano

Bipa

X Nostr GitHub

niftynei

bitcoin++

X Nostr GitHub Instagram Website

workshop

BitAxe Hashwars: A Beginner’s Guide to Sovereign Mining

plebhash

Time: Wed, Feb 19 · 3:30 PM – 5:00 PM
Location: Workshops Stage
Type: workshop
Duration: 1h 30m

10-15 participants follow instructions to: - connect a bitcoin node to a private signet - connect a stratum server to their bitcoin node - connect a bitaxe to their stratum server - watch a block explorer and count how many blocks they find

Speakers

plebhash

vinteum grantee

X Nostr GitHub Website

Doors9:30 AM

Breakfast10:00 AM

Lunch12:00 PM

Coffee2:30 PM

Time

Main Stage

Talks Stage

Workshops Stage

10AM

11AM

12PM

1PM

2PM

3PM

4PM

workshop

NLightning - Bringing Lightning to .NET

Nickolas Goline

Time: Thu, Feb 20 · 10:00 AM – 11:00 AM
Location: Main Stage
Type: workshop
Duration: 1h

Let's talk about the unique challenges and intricacies of implementing the Bitcoin Lightning Network protocol in a .NET environment, 8 years after the original specifications were laid out. This talk delves into the technical hurdles, the adaptation of existing protocols to modern C# frameworks, and the complexities of ensuring compatibility and performance.

Speakers

Nickolas Goline

OpenSats

X GitHub Website

Watch

workshop

How to Win a Hackathon

Alex Lewin

Time: Thu, Feb 20 · 11:00 AM – 12:00 PM
Location: Main Stage
Type: workshop
Duration: 1h

Watch recording

Pt. 1 - Talk: Project showcase & guide on how to turn an idea into a winning hackathon project Pt. 2 - Workshop: Bootstrapping a project with AI tools

Speakers

Alex Lewin

Fedi

X GitHub

workshop

Taproot under the root and why you shouldn't leaf behind

jaonoctus

Time: Thu, Feb 20 · 1:00 PM – 2:30 PM
Location: Main Stage
Type: workshop
Duration: 1h 30m

In this workshop, we are going to hack into Taproot’s core features, including Schnorr signatures and Merkle trees, through hands-on activities. Learn how it works and apply it to real-world Bitcoin use cases.

Speakers

jaonoctus

ZBD

X Nostr GitHub Website

talk

Bringing superpowers to apps and wallets with Nostr Wallet Connect

saunter

Time: Thu, Feb 20 · 3:00 PM – 3:30 PM
Location: Main Stage
Type: talk
Duration: 30m

Introduction to Nostr Wallet Connect - a simple protocol to connect lightning wallets to apps on any device and any platform. NWC allows developers to design their bitcoin payment experiences in any way they want, giving them a lot of programmability and freedom in the design, without custodying users funds. This presentation shows lots of real life demos of unique, seamless payment experiences that NWC unlocks for bitcoin product builders and users.

Speakers

saunter

Alby

X Nostr GitHub Website

talk

Nostr and White Noise

Jeff Gardner

Time: Thu, Feb 20 · 3:30 PM – 4:00 PM
Location: Main Stage
Type: talk
Duration: 30m

Jeff G gives us a deep dive into building private messaging protocols for mulit-users on nostr

Speakers

Jeff Gardner

White Noise

X Nostr GitHub Website

hackathon

Hackathon Kickoff

Alex Lewin, niftynei

Time: Thu, Feb 20 · 4:00 PM – 4:30 PM
Location: Main Stage
Type: hackathon
Duration: 30m

Rules and regulations for the hackathon

Speakers

Alex Lewin

Fedi

X GitHub

niftynei

bitcoin++

X Nostr GitHub Instagram Website

workshop

LNDK and a Bolt12 local playground

Maurice Poirrier

Time: Thu, Feb 20 · 10:00 AM – 10:45 AM
Location: Talks Stage
Type: workshop
Duration: 45m

Importance of LNDK in the current ecosystem, how to set it up and how to spin up a playground to test paying bolt12 offers through signet

Speakers

Maurice Poirrier

B4OS

X Nostr GitHub Website

talk

Mostro: Demo and Project Update

bilthon

Time: Thu, Feb 20 · 10:45 AM – 11:00 AM
Location: Talks Stage
Type: talk
Duration: 15m

Speakers

bilthon

Mostro

GitHub

workshop

Implementing Payjoin with PDK

spacebear

Time: Thu, Feb 20 · 11:00 AM – 12:00 PM
Location: Talks Stage
Type: workshop
Duration: 1h

This workshop will be loosely based on: https://payjoin.org/docs/tutorials/receive-payjoin-v2/ We'll show how to implement Payjoin receivers (and if there is time, senders) using the Payjoin Dev Kit, and make Payjoin transactions on Signet.

Speakers

spacebear

Payjoin

X Nostr GitHub Website

talk

Introduction to fuzzing

Bruno Garcia

Time: Thu, Feb 20 · 1:00 PM – 1:45 PM
Location: Talks Stage
Type: talk
Duration: 45m

In this talk, we are going to present an introduction to fuzzing, its concepts and tools (black-box/white-box/coverage-guided fuzzing, afl, libfuzzer, differential fuzzing, etc) and its applicability on Bitcoin projects. Let's deep on how bitcoin projects can improve their security and reabilitity by using fuzz testing.

Speakers

Bruno Garcia

Vinteum

X Nostr GitHub Website

talk

Hacking LNURL to use Bitcoin as a payment rail

Lorenzo Maturano

Time: Thu, Feb 20 · 1:45 PM – 2:30 PM
Location: Talks Stage
Type: talk
Duration: 45m

How LNURL and the Lightning Network can be leveraged to use Bitcoin as a payment rail

Speakers

Lorenzo Maturano

Bipa

X Nostr GitHub

workshop

Hacking with LibFloresta

Joao Leal

Time: Thu, Feb 20 · 3:00 PM – 4:00 PM
Location: Talks Stage
Type: workshop
Duration: 1h

A workshop showing the components of the forest library to create a subnet and experiment with node gossip, filtering, and a detective mini-game among participants where they need to find, using Rust, the node that is lying to steal some satoshis.

Speakers

Joao Leal

Vinteum

GitHub Website

workshop

Warnet

Grant

Time: Thu, Feb 20 · 10:00 AM – 12:00 PM
Location: Workshops Stage
Type: workshop
Duration: 2h

Compete in teams to take down more bitcoin core nodes using exploits.

Speakers

Grant

GitHub Website

workshop

Tiny Lightning Nodes for Shops

Chris Guida

Time: Thu, Feb 20 · 1:00 PM – 2:30 PM
Location: Workshops Stage
Type: workshop
Duration: 1h 30m

Use Phoenixd, LNBits, and Zeus to start accepting bitcoin at your shop! - easy - cheap: the total cost is under US$70 - secure: no need to trust third parties with your funds or your data, and no need to trust your employees - adaptable: LNBits is like a swiss-army knife and phoenixd can be replaced with CLN so your setup can grow with you

Speakers

Chris Guida

bitcoin devops

X Nostr GitHub Website

workshop

Krux and Miniscript

qlrd

Time: Thu, Feb 20 · 3:00 PM – 4:00 PM
Location: Workshops Stage
Type: workshop
Duration: 1h

This miniscript workshop, as a game, is designed to demonstrate the majority of Krux features interacting with the Liana wallet.

Speakers

qlrd

Krux

X Nostr GitHub Website

Doors9:30 AM

Breakfast10:00 AM

Lunch12:00 PM

Coffee3:00 PM

Time

Main Stage

Talks Stage

Workshops Stage

9AM

10AM

11AM

12PM

1PM

2PM

3PM

4PM

5PM

6PM

7PM

8PM

9PM

hackathon

Hacking Time

Time: Fri, Feb 21 · 9:00 AM – 12:00 PM
Location: Main Stage
Type: hackathon
Duration: 3h

hackathon

Hacking Time

Time: Fri, Feb 21 · 1:00 PM – 3:00 PM
Location: Main Stage
Type: hackathon
Duration: 2h

hackathon

Hacking Time

Time: Fri, Feb 21 · 3:30 PM – 9:00 PM
Location: Main Stage
Type: hackathon
Duration: 5h 30m

Doors9:00 AM

Breakfast10:00 AM

Lunch12:00 PM

Time

Main Stage

Talks Stage

Workshops Stage

9AM

10AM

11AM

12PM

1PM

2PM

3PM

hackathon

Project Submission Deadline

Time: Sat, Feb 22 · 10:30 AM – 10:31 AM
Location: Main Stage
Type: hackathon
Duration: 1m

Must have your projects submitted by this time!

hackathon

Opening the digital vault: A deep dive into usability

Mogashni Naidoo

Time: Sat, Feb 22 · 10:30 AM – 11:30 AM
Location: Main Stage
Type: hackathon
Duration: 1h

Findings from the Bitcoin UX Bootcamp run by the Bitcoin Design Foundation

Speakers

Mogashni Naidoo

Bitcoin Design Foundation

Website

hackathon

Hackathon Presentations

Time: Sat, Feb 22 · 11:30 AM – 2:00 PM
Location: Main Stage
Type: hackathon
Duration: 2h 30m

Hackathon Presentations

hackathon

Hackathon Judging

Super Testnet, Lucas Ferreira, saunter, Elle Mouton, jaonoctus

Time: Sat, Feb 22 · 2:00 PM – 2:30 PM
Location: Main Stage
Type: hackathon
Duration: 30m

Break for snack while judges deliberate

Speakers

Super Testnet

Independent

X Nostr GitHub

Lucas Ferreira

Vinteum

X Website

saunter

Alby

X Nostr GitHub Website

Elle Mouton

Lightning Labs

X GitHub

jaonoctus

ZBD

X Nostr GitHub Website

hackathon

Hackathon Awards Ceremony

Time: Sat, Feb 22 · 2:30 PM – 3:15 PM
Location: Main Stage
Type: hackathon
Duration: 45m

Find out who won!

hackathon

Closing Session

niftynei

Time: Sat, Feb 22 · 3:15 PM – 3:25 PM
Location: Main Stage
Type: hackathon
Duration: 10m

Speakers

niftynei

bitcoin++

X Nostr GitHub Instagram Website