Logo

Open House Archive

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

projects-banner

Builder Highlight

Most Hackathon Won

Most Project Built

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 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

CorpAction Engine

Tokenized Equity Corporate Action Automation Engine for Robinhood Chain / Arbitrum

Tech StackRust, Solidity, Web3
Builder
Yyangming wang

Alphart NFT

The project combines digital art, blockchain artist identity, and automation to provide a simple experience for collectors and creators alike.

Tech StackReact, Next, Web3, Node, Solidity, Ethers
Builder
AAlpha Diallo
NFTAIDeFi

ReineiraOS

Bonded x402: liquidity behind mission-critical outcomes.

Tech StackNode, Web3, React, Solidity, FHE, Python
Builder
AAlexander Nagaikin
AIInfraDeFi

helix-treasury

The Programmable Treasury OS for the Onchain Economy Turn your DAO or onchain business treasury into a policy-driven system. Define rules once. Let agents propose. Multisig executes. Audit forever.

Tech StackRust, Python, Java, Solidity, Move
Builder
CCaptain ox
DeFiAIOther

Aura Protocol

AI-powered perpetual trading with a Stylus WASM order book, multi-agent safety committee, and cross-chain settlement between Arbitrum Sepolia and Robinhood Chain.

Tech StackNext, React, Solidity, Rust, Node, Web3, Ethers, Stylus
Builder
Mmaxence dabrowski
DeFiAIRWAInfra

Skepsis

Skepsis is a continuous-outcome prediction market. Instead of yes/no, you price the range a number lands in. Binary markets price direction and pay nothing when the number lands off-strike; Skepsis prices magnitude, so the payoff scales with how close you are. It runs on Arbitrum Sepolia, resolves on Chainlink, and is curated. LMSR over a bucket tree prices every range on one continuous curve (range, time, and 1-of-N options markets). One ERC-4626 vault seeds every market, so a market is tradable the moment it's created, and recycles capital on resolution. LPs earn fees across all markets. Unified liquidity: one curve with shared depth, not fragmented per-threshold binary books. Solvency is guaranteed on every trade: LMSR keeps pool balance ≥ max payout, and the alpha parameter bounds worst-case LP loss. Alpha decay tunes spreads over a market's life to blunt manipulation and converge to efficient pricing. (confirm direction vs. the deployed contract) Traders express a precise view (CPI in 2.8–3.2%, not CPI > 3%); treasuries and LSTs hedge precise exposures without basis risk; parametric insurance becomes possible.

Tech Stack
Builder
AAbhimanyu Ajudiya
DeFiOther

Ayolah

We are three horsemen to build a Traceable Agriculture Supply Through Real World Asset Tokenization.

Tech StackSolidity, Next, Express js, Node, Arbitrum One, Wagmi, Foundry, Rainbowkit
Builder
MMuhammad Ramadhani Alfarizi
RWADeFi

VerdexSwap

The DEX that pays you back when it hurts. Self-sustaining Impermanent Loss Shield. Provide liquidity and get compensated for price divergence. Automatically.

Tech StackSolidity, Web3, Ethers, foundry, theGraqhProtocol, ThirdWeb
Builder
AAryan Sinha
DeFiOther

Banana Markets

Modular yield aggregation protocol that combines ERC-4626 with the Diamond proxy pattern (EIP-2535), giving every yield strategy its own independently upgradeable facet behind a single curated vault.

Tech StackSolidity, Next, Ethers
Builder
JJayesh Yadav
DeFi

Reveal Protocol

Reveal Protocol is a receipt layer for crypto commerce.

Tech StackSolidity, Kotlin, Next.js, Foundry, Arbitrum, Privy, ZeroDev, Alchemy
Builder
HHoorad Ramezani
Infra

Rubbi

A payment automation platform that allows users to pay subscriptions, utility bills, and recurring salaries with cryptocurrency through smart contract-powered automation and virtual payment cards.

Tech StackSolidity, Node, Next, Ethers, Typescript, Web3
Builder
LLevi Ojukwu
DeFiInfraOther

Agama Finance

The Lending Network for Real World Assets

Tech StackReact, Next, Web3, Ethers, Rust
Builder
TTom DAVID
DeFiRWAAI
  • Previous
  • 1
  • More pages
  • 18
  • 19
  • 20
  • More pages
  • 86
  • Next