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Hackathon control board Austin 2025, mempool edition

Bitcoin++ Pool 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
Award winner Best Design (UI)
Award winner Most Educational

HashLeague

Unassigned

A leaderboard for bitcoin community mining pools.

mempool.spacepublicpooltypescriptvite

GitHub Demo Docs

Overall winner 2nd Overal

Runtime BTC Knots policy changes

Unassigned

Changes to BTC Knots policy (aside from certain configurable options) require a recompilation of the client source code. Addressing this grants us many benefits.

knotslua

GitHub Docs

Overall winner 3rd Overall

MemCooler

Unassigned

Its like the mempool, but cooler.We use nostr to allow miners to virtue signal and for users to send transactions directly to those that are aligned with the needs and ideals of the transactor

lovenostrreacttypescript

GitHub Docs

§ More winning builds

Honorable mentions & sponsor prizes

Award winner Best Beginner Hack
Award winner Honorable Mentions

Bitaxe authentication

Unassigned

Prevent your friends on your home wifi from pointing your bitaxe to their pool

cts

GitHub Docs

Award winner Honorable Mentions

Core Explorer Kit

Unassigned

Core explorer is a data science approach to understanding, reviewing and improving the bitcoin core software. This kit seeks to automate the local deployment of core explorer tools, to users.

cssgraphqlhtmljavascriptneo4j

Demo Docs

Award winner Honorable Mentions

garbageman

Unassigned

Some nodes are attacking bitcoin by preferentially peering to relay garbage around the mempool, enabling miners to stuff it into blocks. This new feature for Bitcoin Knots takes out the garbage.

bitcoinc++

GitHub Docs

Award winner Honorable Mentions

OpenAutoPay - Autonomous BTC SATs payments by Agentic AIs

Unassigned

Agentic AI (digital workforce) needs a bank account to buy native internet resources by paying off paywalls for autonomous decisions. Lightning+L2s, L402, Nostr & MCP can deliver the 100x AI demand

crewailightning-nodemcpnostrnwcnwc-client-superplaywrightpython

GitHub Docs

Award winner Honorable Mentions

Rainforest

Unassigned

Rainforest is a self-sovereign storefront where buyers mine, not pay.

angular.jsc#docker

GitHub Demo Video Docs

Award winner Most Ambitious / Most Impressive

Confidential Script

Unassigned

Trust-minimized opcode emulation using confidential cloud compute

rust

Docs

Award winner Quirkiest Hack

OP_RETURN.space

Unassigned

What would the blockchain be like if the OP_RETURN limit was removed?OP_RETURN.space is a blockchain explorer optimized for displaying large amounts of hilarious data

astropostgresqltypescript

GitHub Demo Docs

Award winner Best Design (Accessibility)

ToeDip

Unassigned

Test stratum pool connection

bolt.new

Docs

§ Prizes

Prize pool.

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

★ 1st place · grand prize

5M satoshis

HashLeague + 1st Overall — future Bitcoin++ ticket

1st Overall · 5M satoshis

★ 2nd place

3M satoshis

Runtime BTC Knots policy changes + 2nd Overal — future Bitcoin++ ticket

2nd Overal · 3M satoshis

★ 3rd place

2M satoshis

MemCooler + 3rd Overall — future Bitcoin++ ticket

3rd Overall · 2M satoshis

+ Additional awards

[ 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 ]

Best Design (Accessibility)

Gamma Bitaxe Miner + Tickets to future Bitcoin++ event - Awarded to the project that best enhances accessibility, ensuring more people can use and benefit from it regardless of ability.

Prizes

Best Design (Accessibility) — future Bitcoin++ ticket 1 satoshis

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

[ Award ]

Best Design (UI)

Gamma Bitaxe Miner + Tickets to future Bitcoin++ event - For the project with the most intuitive, polished, and visually appealing user experience.

Prizes

Best Design (UI) — 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.

[ Award ]

Most Ambitious / Most Impressive

Tickets to future Bitcoin++ event - Most progress made, Highest technical achievement

Prizes

Most Ambitious / Most Impressive — future Bitcoin++ ticket 1 satoshis

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

[ Award ]

Most Educational

Tickets to future Bitcoin++ event - Most likely to inspire MY MOM or kid brother to use bitcoin

Prizes

Most Educational — future Bitcoin++ ticket 1 satoshis

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

[ Award ]

Quirkiest Hack

Tickets to future Bitcoin++ event - You didn‘t win a top prize, but you made the judges smile :D

Prizes

Quirkiest Hack — 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