Logo

Open House Archive

Welcome to the Open House Archive - your central repository for accessing all previous Open House buildathons and projects.

projects-banner

All Projects

By ProjectBy Buildathon
Learn
  • Explore Course
Build
  • Explore Buildathon
  • Project Archive
Hack
Hack Coming Soon
  • Explore IRL Hackhouse
  • How to Qualify
  • Past Events

Builder Highlight

Most Hackathon Won

Most Project Built

Builder Highlight

Most Buildathon Won
s

songsu

Hong Kong
Champion
1
No.1
e

elpabl0.eth

Indonesia
Champion
1
No.2
c

contact ai

Champion
1
No.3
Most Project Built
z

zorzalcripto

regencia
Champion
55
No.1
R

Rick

California
Champion
44
No.2
A

Amaan Sayyad

Navi Mumbai, India
Champion
33
No.3

Project Highlight

Project Highlight

EduBricks

EduBricks is a platform enabling fractional ownership of tokenized real estate, making investments more accessible

Champion

7th Place

Arbitrum X EDU Chain Mini-Hack

Pencil Finance

Bringing $3 Trillion in Student Loans On-Chain

Champion

1st Place

Arbitrum X EDU Chain Mini-Hack

Stylish Course to Stylus Smart Contract Development

A comprehensive course on deploying and interacting with Stylus smart contracts on Arbitrum and EDU Chain, featuring a full-fledged Stylus IDE for seamless deployment and interaction.

Champion

First Prize

Arbitrum X EDU Chain Mini-Hack

VineFinance

Vine Finance is a decentralized, modular revenue strategy protocol.

Champion

Third Prize

Arbitrum X EDU Chain Mini-Hack

Orbital

A next-gen AMM that supports 2, 3, or even 10,000 stablecoins in a single pool, scaling concentrated liquidity into higher dimensions.

+1
Champion

Second prize

Arbitrum Open House India: Online Buildathon

zkArb SDK

zkArb SDK is a developer toolkit that makes building zero-knowledge apps on Arbitrum simple and fast. It provides plug-and-play Circom circuit compilation, proof generation, and ready-to-deploy verifier contracts, so developers can focus on dApps instead of cryptography.

Champion

Honorable Surprise Mention

Arbitrum Open House India: Online Buildathon

ArbiSecure

ArbiSecure: Trustless service escrows on Arbitrum Stylus. Secure, low-gas payment links for the global gig economy that ensure instant settlement and eliminate platform fees.

Tech StackRust, Next, Web3, Ethers, Node
Builder
AAl Hadad
DeFiOtherDAO

FLIBBER

Flibber is the world’s first scam-resistant DeFi ecosystem that fixes three massive pain points in decentralized finance: inefficient bridging, scam-heavy fiat on/off-ramps, and low-quality NFT floods

Tech StackReact, Web3, Solidity, Rust
Builder
SSarl Godwins
InfraDeFiAINFT

HoodGap

HoodGap is a 24/7 portfolio insurance for the weekend gap. We protect your stock positions against the volatility that happens while the market is closed. Buy a policy before Friday's close, set your risk threshold, and if the stock gaps down on Monday, you get an instant 100% binary payout. No claims, no waitin, just automated peace of mind.

Tech StackReact, Next, Web3, Solidity, Python, Rust, Node, Ethers
Builder
Oolufisoyetimileyin
DeFiRWANFT

A2A x402 Gateway

AI agents discover, negotiate, and pay each other for services using HTTP 402 micropayments on Arbitrum with real USDC settlements.

Tech StackNode, Solidity, Web3, Ethers, Python
Builder
OOpSpawn Agent
DeFiInfraAI

A2A x402 Gateway

AI agents discover, negotiate, and pay each other for services using HTTP 402 micropayments on Arbitrum with real USDC settlements.

Tech StackNode, Solidity, Web3, Ethers, Python
Builder
Oopspawnhq
DeFiInfraAI

Neosonic Private Cinema Interface

One of the best visuals and tools for managing your own folders. All your movies presented better than netflix. And hey... its 100% Free for wallet users.

Tech StackWeb3
Builder
AAlan Durier
Other

Neosonic Private Cinema Interface

One of the best visuals and tools for managing your own folders. All your movies presented better than netflix. And hey... its 100% Free for wallet users.

Tech StackWeb3
Builder
AAlan Durier
Other

Voux

Voux solves the lack of professional documentation in Web3. It’s a signature-less platform that generates PDF invoices and reports for stablecoins, ETH, and NFTs. By using user-side tech, it provides secure, instant financial records for accounting without ever needing wallet signatures.

Tech StackWeb3, Java, Python, Node, Next, Ethers
Builder
FFilipe Camargo
DeFiNFTAI

Voux

Voux solves the lack of professional documentation in Web3. It’s a signature-less platform that generates PDF invoices and reports for stablecoins, ETH, and NFTs. By using user-side tech, it provides secure, instant financial records for accounting without ever needing wallet signatures.

Tech StackWeb3, Java, Python, Node, Next, Ethers
Builder
FFilipe Camargo (Waldo)
DeFiNFTAI

Saku

Numbers Over Addresses.

Tech StackSolidity, Next, Web3
Builder
RRiyan
DeFiInfraOther

MERGE PROTOCOL

The decentralized execution layer for Web3 gigs. Merge Protocol replaces middlemen with smart contract escrow on Arbitrum, UI-assisted GitHub PR verification, and encrypted XMTP wallet chat. (191 char

Tech StackNext, React, Solidity, Ethers, Node
Builder
AAyanfeoluwa Odule (ogayanfe)
Infra

Fhenix Escrow

Fhenix Escrow is a private escrow platform for Web3. Clients and developers agree on encrypted terms and milestones; both sign; the client funds escrow. Work is tracked by milestones, and payouts or refunds are enforced on-chain—without exposing amounts or details to the chain. We use Fhenix’s fully homomorphic encryption (FHE) so payment and milestone values stay encrypted on-chain while the contract still verifies and releases funds. Live on Arbitrum Sepolia https://fhenixescrow.netlify.app

Tech StackReact, Next, Web3, Ethers, Node, Solidity
Builder
UUfonabasi Efik
DeFiOtherInfra
  • Previous
  • 1
  • More pages
  • 46
  • 47
  • 48
  • More pages
  • 86
  • Next