CHAIN DUEL

The fight for the longest Branch

Play Now Contribute

Meet us next

Enter the ring

Lightning sats, a branch that keeps growing, and a pot only one player walks away with.

Fight For
The Branch

Duel with real sats on Lightning. The longest branch wins.

Tournament
Mode

Buy in, play the bracket, and fight through the rounds for the pot.

Zap To
Enter

A Nostr zap is the buy-in. Join a game straight from your client.

Play It
Live

The booth game from Bitcoin conferences, in the room or in your browser.

Free To
Play

Jump into challenges with no buy-in. Win the round, take the sats prize.

Sats To
Builders

Every wager pays the people shipping Chain Duel, instantly over Lightning.

PAST APPEARANCES

Showcased at major Bitcoin and Lightning conferences worldwide.

Bitcoin 2024, Nashville 🇺🇸

BTC Prague 2024 🇨🇿

Chain Duel at Bitcoin Film Fest Halving Party 2024 in Warsaw

Bitcoin Film Fest Halving Party 2024, Warsaw 🇵🇱

Chain Duel at Innovation Legacy Fest 2024 in San Salvador

Innovation Legacy Fest, Parque Cuscatlán 2024, San Salvador 🇸🇻

Chain Duel at Santorini Halving Party 2024

Love is Bitcoin Halving Party 2024, Santorini 🇬🇷

Chain Duel at Bitcoin Day 2024 in Berlin

Bitcoin Day 2024, Berlin 🇩🇪

Chain Duel at Bitcoin Atlantis 2024 in Funchal

Bitcoin Atlantis 2024, Funchal 🇵🇹

Amity Age 2023, Rotan 🇭🇳

Chain Duel at Adopting Bitcoin 2023 in San Salvador

Adopting Bitcoin 2023, San Salvador 🇸🇻

BTC Azores 2023, Azores 🇵🇹

Chain Duel at Plan B Forum 2023 in Lugano

Plan B Forum 2023, Lugano 🇨🇭

Chain Duel at Build the Builders 2023 in Viareggio

Build the Builders 2023, Viareggio 🇮🇹

Chain Duel at Baltic Honey Badger 2023 in Riga

Baltic Honey Badger 2023, Riga 🇱🇻

Bitcoin Amsterdam 2023, Amsterdam 🇳🇱

Chain Duel at Cubo Plus 2023 in El Zonte

Cubo+ 2023, El Zonte 🇸🇻

Chain Duel at Bitcoin Park 2023 in Nashville

Bitcoin Park 2023, Nashville 🇺🇸

Bitcoin 2023, Miami 🇺🇸

Chain Duel at Lightning Summit 2023 in Viareggio

Lightning Summit 2023, Viareggio 🇮🇹

All Past Appearances

BTC HEL 2026 🇫🇮
BTC Prague 2026 🇨🇿
Bitcoin Ireland 2026 🇮🇪
Bitcoin 2026, Las Vegas 🇺🇸
Adopting Bitcoin 2025 🇸🇻
Bitcoin Amsterdam 2025 🇳🇱
BTC Balkans 2025 🇧🇬
BTC Helsinki 2025 🇫🇮
Baltic Honey Badger 2025, Riga 🇱🇻
Barcelona Cyphers Conference 2025 🇪🇸
Bitcoin Las Vegas 2025 🇺🇸
Adopting Bitcoin 2024 🇸🇻

Satsconf 2024 🇧🇷
Plan B Forum 2024 🇨🇭
Bitcoin Amsterdam 2024 🇳🇱
Bitcoin Conference 2024, Nashville 🇺🇸
Bitcoin Day 2024, Berlin 🇩🇪
Innovation Legacy Fest 2024 🇸🇻
Bitcoin Film Fest Halving Party 2024, Warsaw 🇵🇱
Santorini Halving Party 2024 🇬🇷
Bitcoin Prague 2024 🇨🇿
Bitcoin Alive 2024 🇦🇺
Lightning Summit, Tuscany 2024 🇮🇹

Bitcoin Atlantis 2024, Madeira 🇵🇹
Adopting Bitcoin 2023 🇸🇻
Plan B Forum 2023 🇨🇭
Build the Builders, Tuscany 2023 🇮🇹
Bitcoin Amsterdam 2023 🇳🇱
Bitcoin Azores 2023 🇵🇹
Baltic Honey Badger 2023 🇱🇻
Power of Lightning Summit, Bitcoin Park 🇺🇸
Le Paradigme Bitcoin 2023 🇨🇭
Bitcoin Miami 2023 🇺🇸
Lightning Summit, Tuscany 2023 🇮🇹

SPLITS

A fraction of the wagered sats is distributed on Lightning to the contributors of the project.

Chain Duel value-for-value Lightning split diagram

INFRASTRUCTURE

The architecture integrates multiple open-source projects and encourages the adoption of Bitcoin as a payment system.

Team

Two friends building Chain Duel—focused on Bitcoin, community, and practical adoption.

Francis
Mars

Engineer

Extrovert builder focused on execution, UX, and community momentum. Known for practical decisions and systems thinking.

Website GitHub Nostr x.com

Pedro 🧨

Designer

Creative lead shaping visual experience with relentless curiosity, craft, and a sharp eye for Bitcoin-native product storytelling.