Status · Closed Event timeline ·View schedule →

Hackathon control board Nairobi, open source edtion

Bitcoin++ Open Source Edition

Build something real. Find collaborators, choose a challenge, ship your project, and put it in front of the bitcoin++ community.

§ Featured builds

Built in public.

Winning and featured projects from this hackathon. Explore the full gallery →

Overall winner 1st Overall

WestToEast

Unassigned

XOF, XAF, GNF <> KES bridge, using the lightning network and LNURL, through the new Tando feature.

bitcoinlightninglnurl

Video Docs

Overall winner 2nd Overall

Robin

Unassigned

Learn how to contribute to open source before making a pr

javascripttypescript

GitHub Docs

Overall winner 3rd Overall

nairobi2

Unassigned

Permissionless ridesharing app with market based price discovery and Sybil protection through verifiable Bitcoin notarization

claudelightningnostrrustslint

GitHub Docs

§ More winning builds

Honorable mentions & sponsor prizes

Award winner Best Beginner Hack
Award winner Honorable Mentions

Hodlr

Unassigned

Your future self will thank you. Holdr lets you lock Bitcoin to a date you choose, 3 years, 10 years, 30 and walk away. No early withdrawal. Just you, your keys, and time doing the compounding.

aishakespeare

Demo Docs

Award winner Honorable Mentions

MindfulSats

Unassigned

Where your goals meet real accountability

lightningnostrreacttailwindcsstypescriptvite

GitHub Demo Docs

Award winner Honorable Mentions

PoWR - System

Unassigned

Stop Guessing. Start verifying.Whether you are building reputation or hiring talent.PoWR gives you the reciepts.

apis:claritydevgithubgraphqlhirojavascript-frameworks/tech:-next.jslanguages:-typescriptnode.js-web3-integration:-stacks-blockchainpythonresttailwind-csstools

GitHub Demo Docs

Award winner Honorable Mentions

SiriScore

Unassigned

Pre-broadcast Bitcoin transaction privacy scorer. Know what a chain analyst sees before you sign.

bip-174bip-341bip-352bip-370cssfastapihtmlinterjavascriptjetbrains-monomempool.space-apipythonpython-bitcoinlibsqlite

GitHub Docs

Award winner Honorable Mentions

Tando's Ark

Unassigned

"Tando's Ark" upgrades Tando with Bark (Second's Ark implementation) eliminating its Lightning channel and inbound-liquidity overhead while unlocking 0-fee Ark payments into M-PESA.

barkflutternode.jstypescript

Docs

Award winner Honorable Mentions

Zaptip

Unassigned

Zaptip is a Chrome extension that adds a Zap button to GitHub profiles and repos. Drop your Lightning address in your bio, anyone with the extension can tip you in Bitcoin instantly.

bitcoinchromeextensionsjavascriptlightninglnurl-paynetworkwebln

GitHub Video Docs

Award winner Solve Open Source Contribution Spam

Core-gate

Unassigned

Core-Gate gives Bitcoin Core maintainers their time back -> automatically triaging every PR by quality, risk, and contribution standards before a human reads a single line.

javascriptyaml

GitHub Docs

Award winner Best use of Soapbox

Dishi Fresh

Unassigned

Utaipenda!

Demo Docs

Award winner Solve Open Source Contribution Spam

Filter

Unassigned

Filter is an opensource PR spam checker that flags low-quality and AI-generated pull request spam.

node.jsprobottypescript

GitHub Docs

Award winner Best Contribution to Open Source

UTXOracle BTC Calculator

Unassigned

A Bitcoin price calculator powered by your own node. Using UTXOracle, the price is derived on-chain — not from any exchange. Built with nix-bitcoin and Shakespeare.

bitcoincodexgitgithubnix-bitcoinnixosnostrshakespeare

GitHub Demo Docs

Award winner Best Tool for Mobile Money brokers/agents using Bitcoin

LNpesa

Unassigned

Bitcoin on any phone. No app, no smartphone. Dial a code, become a Pontmore agent in 30 seconds. We built the door for the billion without smartphones.

africastalkingbetter-sqlite3express.jsnode.jsnostrprontmore

GitHub Docs

Award winner Best use of Pontmore

Pontswap

Unassigned

A Nostr-native coordination layer for Bitcoin ⇄ fiat swaps.

bitcoinnext.jsnostrreacttypescriptwebsocketzod

GitHub Docs

§ Prizes

Prize pool.

Ranked rewards for the top projects. Challenges can stack on top.

★ 1st place · grand prize

2.5M satoshis

WestToEast + 1st Overall — future Bitcoin++ ticket

1st Overall · 2.5M satoshis

★ 2nd place

1.5M satoshis

Robin + 2nd Overall — future Bitcoin++ ticket

2nd Overall · 1.5M satoshis

★ 3rd place

1M satoshis

nairobi2 + 3rd Overall — future Bitcoin++ ticket

3rd Overall · 1M satoshis

+ Additional awards

[ Award ]

Best Contribution to Open Source

1M Satoshis - Bitcoin is built in the open. This prize will be awarded to the team that makes the most meaningful pull request into an existing open-source Bitcoin project during the hackathon. Contributions can include code, tests, documentation, developer tooling, design, UX, infrastructure, or anything else that helps a real project move forward.

Prizes

Best Contribution to Open Source prize 1M satoshis

[ Award ]

Best use of Soapbox

1M Satoshis - Soapbox builds open-source tools for social media, AI development, activism, and the decentralized web. This prize will be awarded to the team with the best use of Soapbox technology to build an open, user-owned, censorship-resistant app, community tool, or Bitcoin-enabled experience. Learn more at https://canva.link/wy5s2n45dkquwb6

Prizes

Best use of Soapbox prize 1M satoshis

[ Award ]

Solve Open Source Contribution Spam

1M Satoshis - Open-source maintainers are increasingly dealing with low-quality and AI-generated pull request spam. This prize will be awarded to the team that builds the best tool, workflow, policy, or protocol for helping maintainers stop spam while still welcoming serious new contributors. Projects can focus on PR quality checks, maintainer triage, contributor reputation, automated review, proof-of-work, issue claiming, or other approaches.

Prizes

Solve Open Source Contribution Spam prize 1M satoshis

[ Award ]

Best Tool for Mobile Money brokers/agents using Bitcoin

210,000 Satoshis - Mobile money agents (human) are often the human layer that makes financial access work in local communities. This prize will be awarded to the team that builds the best Bitcoin tool for mobile money brokers or agents, helping them manage swaps, liquidity, customer requests, transaction history, disputes, accounting, pricing, or local on/off-ramp workflows.

Prizes

Best Tool for Mobile Money brokers/agents using Bitcoin prize 210k satoshis

[ Award ]

Best use of Pontmore

210,000 Satoshis - Pontmore is a Nostr-native protocol for coordinating Bitcoin-fiat swaps, (human) agent discovery, escrow assumptions, swap state, and dispute resolution across open rails. This prize will be awarded to the team with the best use of Pontmore to build wallets, (human) agent tools, swap interfaces, indexers, dispute systems, SDKs, or other infrastructure for open Bitcoin-fiat exchange. Learn more at https://pontmore.xyz/

Prizes

Best use of Pontmore prize 210k satoshis

[ Award ]

Best Beginner Hack

Tickets to future Bitcoin++ event - Only eligible to teams where EVERY member is a high-school/undergraduate student OR a first-time contributor to open-source bitcoin.

Prizes

Best Beginner Hack — future Bitcoin++ ticket 1 satoshis

One ticket to a future Bitcoin++ event for each winning team member.

[ Award ]

Honorable Mentions

Tickets to future Bitcoin++ event - Awarded to up to 6 “honorable mentions”

Prizes

Honorable Mentions — future Bitcoin++ ticket 1 satoshis

One ticket to a future Bitcoin++ event for each winning team member.

§ The judges

11 judges.

Scoring is handled by the assigned hackathon judges.

JUDGE #01

§ Project gallery