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Open House Archive

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

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Project Highlight

Project Highlight

EduBricks

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

Champion

x

Arbitrum X EDU Chain Mini-Hack

Pencil Finance

Bringing $3 Trillion in Student Loans On-Chain

Champion

x

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

x

Arbitrum X EDU Chain Mini-Hack

VineFinance

Vine Finance is a decentralized, modular revenue strategy protocol.

Champion

x

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

x

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

x

Arbitrum Open House India: Online Buildathon

CardChase (London)

Financial markets for collectibles, starting with prediction markets for TCG asset prices

Tech StackReact, Node, Solidity
Builder
GGiannis Panagiotopoulos
DeFiRWAOther

CanHav Research

Navigate DeFi investments through FHE-encrypted AI agents tracking on/off-chain intel!

Tech StackWeb3, React, Next, Node, Solidity, Python
Builder
WWazarat Hussain
DeFiRWAAI

Galena

Galena aims to be THE marketplace for algorithmic investment strategies. In an industry where the legit strategy sellers are masked by a plethora of affiliate marketing scammers, we seek to provide a payment model that incentivises and attracts legitimate profitable quant traders to a central platform. On the customer side, clients get access to verified profitable strategies in a manner that allows them to entirely avoid capital gains tax as well (not legal advice).

Tech StackNext, TypeScript, Enzyme Finance, Arbitrum, view/wagmi, supabase, google cloud run, uniswap v3
Builder
AAshish Yeruva
DeFi

Xeno Money

Xeno is the neobank for merchants - operate local, do business global.

Tech StackWeb3, Java, Solidity, Next, React, Node
Builder
TTom Rowbotham
DeFi

xB77 . vol II

Autonomous. Secure. Focused. Infrastructure for financial agents that never sleep and never get distracted.

Tech StackWeb3, zig, stylus, wasm
Builder
FFederico descalzi
AIInfraDeFi

StableGuard

StableGuard is autonomous cross-chain stablecoin depeg protection. When UST/Terra collapsed, $40B disappeared with no automated warning system — protocols kept accepting bad collateral because nothing was watching fast enough. StableGuard cross-checks two independent data sources before acting — a Chainlink price oracle and on-chain DEX data — avoiding the false alarms that plague single-feed monitoring bots. When confident a depeg is real, it automatically fires a Chainlink CCIP alert that can broadcast to multiple destination chains at once, triggering protective action before a human even notices. It doesn't stop a stablecoin from collapsing if it's genuinely dying — nothing can — but it stops the collateral damage from spreading to protocols and positions that had nothing to do with the original coin.

Tech StackSolidity, Ethers, Node, Web3, Next, PowerShell, TypeScript, Hardhat
Builder
MMatthew Boyle
RWAInfraDeFi

Megawatt Solutions

RWA infrastructure protocol building and operating energy storage systems, generating real revenue

Tech StackNext, Solidity, React, Web3, Ethers
Builder
JJan Jagodnik
RWADeFiOther

Powers Protocol: Governance for the programmable economy

Powers Protocol allows startups to create bespoke on-chain governance flows: separate powers in org, create checks and balances between roles, encode nested relationships between orgs and RBAC for deliberation channels. Create an org in 30 minutes using claude skill (+ RAG & MCP); AI agent compatible, native support for Account Abstraction.

Tech StackReact, Next, Solidity, wagmi, Zerodev, Alchemy
Builder
TTeije Hidde Donker
DAOAIOther

Sapio

The competitive allocation layer for the programmable economy.

Tech StackWeb3, Solidity, React, Node
Builder
EEdward Leo
DeFiRWAAI

EdenFi

EdenFi is a global money app connecting Africa and the diaspora to easy finance.

Tech StackWeb3, React Native, Node
Builder
EEzra Akran
DeFi

Dopamyn

Agentic Growth for Brands and Creators

Tech StackReact, Web3, Python, Solidity
Builder
JJitesh Damani
DeFiSocialFiAI

Clearstone

Clearstone is the permissioning layer for institutional DeFi. We turn battle-tested lending protocols like Morpho, Euler and Kamino into KYC-gated, non-custodial markets that meet AML, FINMA and MiCA requirements. Winner of StableHacks ($100k + pilot with AMINA Bank), hosted by Tenity, the Swiss fintech VC backed by SIX and UBS, and now shipping on Robinhood Chain.

Tech StackReact, Ethers, Solidity, Web3, Next
Builder
KKevin Schellinger
DeFiInfra
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Builder Highlight

Most Hackathon Won

Most Project Built

Builder Highlight

Most Buildathon Won
M

Manobendra Mandal

Kolkata, India
Champion
3
No.1
V

Vivek Sahu

India
Champion
2
No.2
s

simp1e

china
Champion
2
No.3
Most Project Built
A

Akan

Lagos, Nigeria.
Champion
14
No.1
S

Skia Variants

The Blockchain
Champion
13
No.2
H

Hafiidh Luqmanul Hakim

Indonesia
Champion
7
No.3