Status · Closed
Event timeline ·View schedule →
Hackathon control board
Riga 2025, privacy edition
Bitcoin++ Privacy 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 →
§ More winning builds
Honorable mentions & sponsor prizes
- Award winner Cloak & Dagger Award - Best Hack for Censorship Resistance
- Award winner Honorable Mentions
Bitcoin core private broadcast end-to-end test
Unassigned
Bitcoin core PR #29415 upgrades `sendrawtransaction` with a private broadcast option. Try an end-to-end test from mobile wallet, through electrs, and out to the network via private broadcast.
- Award winner Honorable Mentions
PARASITE MESSAGING
Unassigned
Using existing infrastructure, like centralized platforms and services, in a parasitic way to bypass censorship and enable free speech and communication even in hostile environments.
- Award winner Honorable Mentions
Pea(nut)Pal
Unassigned
Pea(nut)Pal is a cashu and nostr based POS system that lets merchants receive Lightning transactions and created remote POS devices. Remote POS devices can receive Bitcoin in the name of the merchant.
§ Prizes
Prize pool.
Ranked rewards for the top projects. Challenges can stack on top.
★ 1st place · grand prize
2.5M satoshis
git-futz
+ 1st Overall — future Bitcoin++ ticket
1st Overall · 2.5M satoshis
★ 2nd place
1.5M satoshis
Spilling ecash
+ 2nd Overall — future Bitcoin++ ticket
2nd Overall · 1.5M satoshis
★ 3rd place
1M satoshis
git-futz
+ 3rd Overall — future Bitcoin++ ticket
3rd Overall · 1M satoshis
[ Award ]
ChaCha Slide Award - Best use of Cryptography
Tickets to future Bitcoin++ event - For the project with most novel, clever, or effective use of cryptography.
Prizes
ChaCha Slide Award - Best use of Cryptography — future Bitcoin++ ticket
1 satoshis
One ticket to a future Bitcoin++ event for each winning team member.
[ Award ]
Cloak & Dagger Award - Best Hack for Censorship Resistance
Tickets to future Bitcoin++ event - For the project that best thwarts surveillance, evades censorship, or empowers free expression in hostile environments.
Prizes
Cloak & Dagger Award - Best Hack for Censorship Resistance — 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 ]
ROT13 Going on 30 - 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
ROT13 Going on 30 - Best Beginner Hack — future Bitcoin++ ticket
1 satoshis
One ticket to a future Bitcoin++ event for each winning team member.
§ The judges
9 judges.
Scoring is handled by the assigned hackathon judges.
