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Last active February 27, 2025 19:36
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Exceptional Projects and Winners of Bitcoin++ Hackathon at Floripa 2025

Name: Sloppy
Video: https://www.youtube.com/live/5Ty7eimij08?si=1yBNEe0tA7YFMSGM&t=5038
Desc: a nostr bot that runs an LLM that tries to earn money by being funny, and uses its earnings to pay for its own hosting – such that it dies if no one finds it funny enough
Other links: savesloppy.org

Name: SatsGuardian
Video: https://www.youtube.com/live/5Ty7eimij08?si=HA3325oxhU1DwWvA&t=5411
Desc: A base layer services that watches the mempool. If it detects an unauthorized transaction from your cold wallet, it tries to use RBF to recover your funds
Other links:

Name: Lightning Fuzz
Video: https://www.youtube.com/live/5Ty7eimij08?si=_34NOM3c6EGW5zZs&t=5814
Desc: Fuzz tests lightning implementations by generating many many random CLI commands and seeing if running them produces any unexpected errors
Other links: https://github.com/brunoerg/bitcoinfuzz

Name: Kartapio
Video: https://www.youtube.com/live/5Ty7eimij08?si=MbX7h3H5xej0B3RV&t=6181
Desc: Nostr based webshop software with lightning payments, focused on food delivery
Other links: https://github.com/vstabile/kartapio

Name: Suggestr
Video: https://www.youtube.com/live/5Ty7eimij08?si=-sPtCklMdCOMIXha&t=6454
Desc: Pay people to post things on nostr from their account. If they don’t, you put them on a “wall of shame” to prove they didn’t post whatever it was
Other links: https://suggestr-oflow.vercel.app/

Name: Sonic Stream
Video: https://www.youtube.com/live/5Ty7eimij08?si=Rt6LtsmVj6tCDqCG&t=6907
Desc: A music platform where you can only stream songs by connecting an NWC wallet which then autopays for several seconds of music at a time
Other links:

Name: Bitcoin Free Market
Video: https://www.youtube.com/live/5Ty7eimij08?si=IAtyHet16ymZ_5dS&t=7197
Desc: Nostr based webshop software with lightning payments, based on Nostr Market from LNBits
Other links:

Name: Misfit Core
Video: https://www.youtube.com/live/5Ty7eimij08?si=X4s7bcSwe2mEyQx4&t=7491
Desc: A tool to help bitcoin core testers by automatically creating invalid transactions and blocks
Other links: https://github.com/j-moreno-c-r/Misfit_core

Name: Nostr Data Market
Video: https://www.youtube.com/live/5Ty7eimij08?si=7mb9XnHfhmFMsfdV&t=7746
Desc: A tool for hooking up data sensors (e.g. weather data, soil sampling) to a lightning wallet and nostr so that data researchers can pay to access and use the data
Other links: https://vyp.li/DataMarket

Name: Bitcoin Sale
Video: https://www.youtube.com/live/5Ty7eimij08?si=ao0Fef3wWYmIMwsi&t=8132
Desc: A chrome extension that displays the bitcoin price and icons for whether the price stayed flat, went down, or went up, with small messages that encourage you to buy the dip (if the price is down) and to get hyped (if the price went up)
Other links:

Name: Money Badger
Video: https://www.youtube.com/live/5Ty7eimij08?si=LN3eVRc02KGFf42R&t=8419
Desc: A tool to assist financial education for children by assigning them chores with bitcoin rewards attached
Other links:

Name: Decentralized Logistics Protocol
Video: https://www.youtube.com/live/5Ty7eimij08?si=TB5yFMe2b8uLOJfA&t=8803
Desc: Creates a custom lightning node that advertises its physical location and then constructs payment routes that follow a physical path from point A to point B (on a physical map) and pays the hops significantly extra if they assist with physically delivering a package from point A to point B
Other links: https://substack.com/home/post/p-157380441

Name: Zaplit
Video: https://www.youtube.com/live/5Ty7eimij08?si=mu_m2bfuwh8SMP1q&t=9148
Desc: A bill splitting app based on nostr and lightning. Have one person pay the bill at a restaurant, scan the receipt, identify who owes what, and then automatically give lightning invoices for that amount to each person, with a visual for when each person pays
Other links: https://zaplit-landing.vercel.app/, https://github.com/lacrypta/zaplit

Name: BoomerSig
Video: https://www.youtube.com/live/5Ty7eimij08?si=LDhzAJG7eYQ6rE4Z&t=9450
Desc: A tool for generating and signing ECDSA multisigs via multiparty computation instead of bitcoin script
Other links:

Name: Bitcoin “Trustless” Contracts Platform
Video: https://www.youtube.com/live/5Ty7eimij08?si=Wmrp-YeWYEKMx-S-&t=9846
Desc: A DLC based prediction marketplace and betting application – they put the word trustless in quotes because they did not solve the oracle problem
Other links: https://bitcoin-dlc.gabrielgusn.space

Name: NostrPIX
Video: https://www.youtube.com/live/5Ty7eimij08?si=AYXxrlihfRg9wcAa&t=10168
Desc: Converts pix qr codes to lightning qr codes via a centralized swap service
Other links: https://nostr-pix-frontend-production.up.railway.app/

Name: Coinfy
Video: https://www.youtube.com/live/5Ty7eimij08?si=ZM2m7G88ALm9oy5C&t=10492
Desc: A coin selection tool that prioritizes separating coins received p2p from coins received via a KYC’d service
Other links:

Name: Emojikey
Video: https://www.youtube.com/live/5Ty7eimij08?si=unrC9FqmOEjrtAox&t=10848
Desc: Use data stuffing to insert bitcoin private keys into individual emojis and share them on social media
Other links: https://emojikey.com

Name: SPLITR
Video: https://www.youtube.com/live/5Ty7eimij08?si=ROYlwk7rO6n1iaRs&t=11116
Desc: A bill splitting app based on nostr and lightning. Similar to zaplit but with a different interface.
Other links: https://github.com/lordbabuino/splitr

Name: Paying Invoices from White Noise
Video: https://www.youtube.com/live/5Ty7eimij08?si=XHKN05cQfaC59abO&t=11314
Desc: Adds lightning support to a nostr-based private messaging app called White Noise
Other links: https://github.com/erskingardner/whitenoise

Name: Fran by Goat++
Video: https://www.youtube.com/live/5Ty7eimij08?si=49Mbt3JLdGycJ0UV&t=11608
Desc: A tool to help onboard merchants and users to lightning by educating them about how to use bitcoin with help from an AI that understands common bitcoin apps and audibly explains their interface elements, including answering questions
Other links: https://hackatonpp-fran.web.app

Name: Betcoin
Video: https://www.youtube.com/live/5Ty7eimij08?si=lWOHPZNP0pKtLgtY&t=12021
Desc: A custodial prediction market based on lightning. Someone can create a list of possible outcomes and users can send funds to the outcome they think is most likely, and if they are right they get back their own money plus some from everyone who bet wrong (assuming the oracle does payouts correctly)
Other links:

Name: Lightlinks
Video: https://www.youtube.com/live/5Ty7eimij08?si=YwYPGfkjLSdkKwBa&t=12315
Desc: An affiliate links platform based on lightning. Merchants can list products for sale and a list of affiliates, who get a kickback if they convince people to buy a product through their personal webpage. Buyers also get a discount.
Other links: https://lightlinks.io

Name: BTC RSVP
Video: https://www.youtube.com/live/5Ty7eimij08?si=ZwIan4ym09pDZver&t=12673
Desc: An event registration platform where you can create tickets for an event and sell them for bitcoin over lightning
Other links:

Name: Bitcoin Street Survey Repository
Video: https://www.youtube.com/live/5Ty7eimij08?si=XMg3pNS3CMV5Zrmc&t=13103
Desc: A database of short surveys of people on the streets of Floripa, Brazil about their thoughts on bitcoin and finance
Other links: https://curious-elf-09b4a9.netlify.app

Name: Satoshi Escrow
Video: https://www.youtube.com/live/5Ty7eimij08?si=j3QtbOKGSD8Oy1hJ&t=13509
Desc: A p2p escrow solution that enables Satoshi’s original escrow idea where there is no third party, just a 2 of 2 multisig to which both counterparties overpay the value of some product, incentivizing them to collaborate to get their money back (and deliver whatever the product is). It also supports an optional 2 of 3 multisig option for those who prefer a cheaper but less p2p solution
Other links: https://scrow.exchange/

Winners:

  • Nostr Pix (1st place - 5m sats)
  • White Noise (2nd place - 3m sats)
  • Nostr Data Market (3rd place - 2m sats)

Honorable mentions:

  • Fran by Goat++ (honorable mention - 1m sats)
  • Satoshi Escrow (honorable mention - 1m sats)
  • Lightning Fuzz (honorable mention - 1m sats)
  • Misfit Core (honorable mention - 1m sats)

Category winners:

  • Sats Guardian (Best Beginner Hack - 500k sats)
  • Sloppy (Quirkiest Hack - 500k sats)
  • Zaplit and Money Badger (best NWC apps – 333k sats apiece)
  • White Noise (NWC in 3rd party app - 333k sats)
  • Money Badger (Best Design - 100k sats)

Ones Super Testnet really liked:

  • Kartapio
  • Nostr Data Market
  • Zaplit
  • Nostr Pix
  • Lightlinks
  • Satoshi Escrow
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