5 days. 11 teams. 1 goal: build on Bitcoin. 11 teams gathered in Buenos Aires at the first Stacks Hacker House for a dedicated week of workshops and building, culminating in a pitch of each app at the Bitcoin Builders Conference. Here's what the Stacks Hacker House built 🧵

1/ REFERYDO! @TheHashHawk Referydo is a talent marketplace that transforms how freelancers, scouts, and clients connect and collaborate. Referydo distributes value fairly among all participants through smart contracts and guaranteed commissions.

2/ Bitcoin University (BTCU) @btcu_official BTCU is bridging the gap between industry and academia with a four-sided marketplace consisting of students, teachers, recruiters, and hiring managers at a time where the best candidates are receiving billion-dollar FAANG offerings.

3/ BigMarket @BigMarketDAO BigMarket is a truth layer for the internet: the world’s first Bitcoin community-owned prediction market, powered by sBTC and autonomous AI agents.

4/ HyperInsure @hyperinsure HyperInsure provides non-intrusive delay insurance for blockchain transactions, powered by Stacks smart contracts and Bitcoin finality proofs.

5/ Stacks Machines @gianmalarcon Stacks Machines enhances smart contract development in Clarity for Cursor/VS Code. It ingests official Clarity documentation into ChromaDB, retrieves the most relevant context, and uses Gemini to generate accurate answers.

6/ x402 Stacks @toony1908 x402 enables automatic HTTP-level payments for APIs, AI agents, and digital services using STX or sBTC tokens on Stacks. Pay only for what you use, right when you use it. No subscriptions, no API keys, no intermediaries.

7/ Movya Wallet @movya_wallet Movya Wallet is a smart wallet for all users, but focused on onboarding people who are unfamiliar with web3. With a simple message, users can send transactions and exchange tokens.

8/ Rather Strategy Protocol @rather_labs Rather Strategy Protocol brings NFT strategy mechanics fully on-chain. Rather than relying on humans to make sweeps and burn tokens, these actions can be managed by smart contracts autonomously.

9/ CertifiKurs @certifikurs CertifiKurs enables schools, universities, and other institutions to issue on-chain certificates as NFTs. This allows employers to verify and validate applicants' credentials directly on the blockchain.

10/ B2Pix @b2pixorg PIX is an instant payment system with over 200M users banked in Brazil. B2Pix enables every PIX user to send and receive self-custody peer-to-peer Bitcoin payments.

11/ SUMAK @fabohax SUMAK is a music-sharing protocol that enables artists to publish and sell their work, free from the bias, pressure, and gatekeeping of the traditional music industry.

The Stacks Hacker House may be over, but the impact they'll make to our ecosystem lives on. Which project are you most excited for? Let us know! 💬