Top 10 Winning Projects of ETHGlobal Buenos Aires Hackathon

The ETHGlobal Buenos Aires Hackathon wrapped up on November 23, bringing together some of the brightest minds in the Ethereum ecosystem. 

With more than 475 submissions and a massive $500,000 prize pool, this event showcased how quickly blockchain innovation continues to evolve. From AI-powered agents to NFT-enabled devices, this year’s winners covered a wide range of ideas. 

In this article, we explore the top 10 winning projects of ETHGlobal Buenos Aires Hackathon and what makes each of them stand out. Read this article to find out more!

ETHGlobal Buenos Aires Hackathon

The ETHGlobal Buenos Aires Hackathon highlighted projects spanning DeFi, NFTs, zero-knowledge tech, cross-chain solutions, prediction markets, and real-world data integration. 

Below are the top 10 winning teams and a breakdown of their contributions.

1. Paybot

Paybot introduced the X402 Payment Required protocol, a blockchain-based micropayment system designed to control access to real-world devices. 

Built originally for a Coinbase developer hackathon, this solution lets users make gas-free payments using the QUSD stablecoin, meaning they can interact with rented bots or IoT devices without needing Ethereum (ETH).

This protocol lets users simply sign an authorization, while service providers cover gas fees. It opens the door to real, scalable micropayments for robotics and IoT.

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2. JetLagged

JetLagged is a decentralized prediction market focused on flight delays and cancellations. Built on Celo and Oasis, the platform allows people to bet on the real-time status of flights. 

It uses:

- An AMM-based pricing system

- Real-time odds

- Oasis oracle data for decentralized verification

- Farcaster Frame support

This project shows a practical use case for prediction markets tied to real-world events.

3. Hubble Trading Arena

Hubble Trading Arena demonstrated a fully autonomous, open-source trading ecosystem powered by on-chain agents. 

These AI agents operate using the x402 and ERC-8004 protocols, coordinating live trading without human involvement. It’s a glimpse into the future of algorithmic finance, completely decentralized and self-running.

4. Payload Exchange

Payload Exchange enables merchants to accept any token through the x402 agent, while still receiving stable assets. It introduces a third participant, the sponsor, who pays partially or entirely in exchange for user actions or data.

Benefits include:

- Sponsors grow user bases

- Content creators reduce paywall friction

- Users get access to premium tools for free or cheaper

It’s a clever way to merge payments, marketing, and on-chain incentives.

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5. Yoga

Yoga is a next-generation liquidity position manager for UniV4. Unlike traditional NFT positions that cover only one price range, Yoga supports multiple sub-ranges under a single NFT. This means LPs can manage complex strategies easily, increasing efficiency and flexibility.

6. LensMint Web3 Camera

LensMint is one of the most impressive hardware–blockchain integrations. This project uses a Raspberry Pi camera to sign photos as they’re taken, then generates zero-knowledge proofs to verify authenticity.

Photos become ERC-1155 NFTs stored via Filecoin (FIL), complete with:

- Tamper-proof certification

- Timestamped verification

- Proof of presence

- Revenue-sharing options for people in the photo

This technology could redefine journalism, art, and event photography.

7. Halo

Halo transforms real-world shopping receipts into on-chain rewards using WorldChain. Users scan receipts, the system processes the data, and rewards are distributed to verified users via World ID, all while keeping their identity private.

This solution bridges offline economic activity with on-chain incentives in a privacy-protected way.

8. zkx402 (ProofofLeak)

zkx402 extends the x402 protocol by adding zero-knowledge proofs to verify payment conditions and content authenticity. 

Examples include:

- Journalists proving authorship

- Whistleblowers receiving payments without revealing identity

- AI agents paying for sensitive data

- Proof of human creation

This framework combines privacy, identity, and micropayments in one mechanism.

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9. Aqua0

Aqua0 expands 1inch’s Aqua protocol by enabling cross-chain shared liquidity with LayerZero. It solves the issue of fragmented AMM liquidity by creating a unified cross-chain liquidity layer. 

LPs can now access more yield opportunities and improve capital efficiency through a single cross-chain mechanism.

10. BMCP (Bitcoin Multi-Chain Protocol)

BMCP connects Bitcoin with EVM chains using true cross-chain programmability. It reads Schnorr-signed Bitcoin transactions and triggers EVM actions on Polygon and Ethereum using Chainlink CCIP.

This system proves that Bitcoin can interact with programmable smart contracts in a trust-minimized way, unlocking a new wave of multi-chain applications.

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Conclusion

The top 10 winning projects of ETHGlobal Buenos Aires Hackathon highlight the rapid growth of blockchain innovation. 

From AI-driven trading systems to real-world receipt verification and tamper-proof photography, the winning teams showcased what’s possible when creativity meets decentralized technology.

As these projects continue to evolve, they will likely influence future development trends across DeFi, Web3 infrastructure, identity, and real-world data integrations.

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FAQ

What was the prize pool for ETHGlobal Buenos Aires?

The hackathon featured a prize pool of $500,000, distributed among winning teams and category prizes.

How many projects competed?

A total of 475 entries were submitted to the hackathon.

Which categories were most popular?

Most winning projects fell under DeFi, cross-chain infrastructure, NFTs, prediction markets, and zero-knowledge proofs.

Which project is considered the most innovative?

Many consider LensMint and BMCP the standout innovations due to their strong real-world applications.

Will these winning projects continue development?

Yes, most ETHGlobal winners typically continue building their prototypes into full products, often securing grants or VC interest afterward.