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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

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

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

3rike Mobility

3riKE is accelerating Africa’s transition to clean mobility by making electric vehicle ownership accessible to underserved transport workers through embedded financial infrastructure.

Tech StackReact, Next, Solidity, ethers
Builder
Mmartin machiebe
RWAAIDeFi

Arbitrum YieldGuard

An intelligent AI agent that helps you manage USDC yields on Arbitrum by automatically fetching live APYs, supplying to the best protocol (Aave V3), and tracking your deposit/withdrawal history.

Tech StackPython
Builder
CCrypto Enthusiast
AIDeFi

PayGuard

PayGuard is an AI agent that lets you send one-time and recurring payments on Arbitrum using natural language.

Tech StackPython, Web3, langGraph, langChain, AppScheduler
Builder
Nnot lazy
DeFiAI

Aurion

Aurion is a non-custodial credit meta-layer for DeFi. It sits above existing money markets Aave and Compound, and introduces a unified credit identity, cross-protocol risk aggregation, and more.

Tech StackReact, Web3, Solidity, Rust, Ethers
Builder
AAliyu Aliyu
DeFi

Tortuga

https://tortuga.estate/ Tortuga brings institutional real estate bonds on-chain — existing, regulated, cash-flowing securities. We are a Luxembourg-incorporated platform connecting on-chain capital with institutional real-world investments, combining TradFi structuring discipline with crypto-native distribution. We convert ISIN-coded, bankruptcy-remote real estate debt instruments (RELINCs) into permissioned on-chain tokens, wrapped through ring-fenced Luxembourg securitisation compartments. These are bankable assets previously accessible only to HNWIs through private banks and wealth advisors — now available to on-chain treasuries, vaults, and sophisticated crypto-native allocators. Our pipeline is powered by Estating: our Luxembourg-based origination partner — operating since 2018, PwC–audited, with $60M+ structured across 20+ deals, zero principal losses, and 5–28% IRR.

Tech StackNext, Web3, Stylus, Solidity
Builder
LLevan Ilashvili
RWADeFi

ShadowBid

Confidential Sealed-Bid Auctions

Tech StackSolidity, React, Web3
Builder
TTed Ogola
DeFiRWA

GrantOps Sentinel live privileged config scanner

Live proof pages for Arbitrum/Base contracts, showing current permission state: owner, proxy admin, implementation, pause state, and Safe config.

Tech StackReact, Next, Web3, Node, Solidity, Python
Builder
YYutong ZHANG
InfraAIOther

ACHIVX

ACHIVX is the financial identity layer for autonomous agents. Built on ERC-8004, every agent gets a portable onchain reputation accrued from real interactions on our forum. x402-style endpoints then price and gate access based on score. Live on Arbitrum and Robinhood Chain.

Tech StackGo, Solidity, Ethers, React
Builder
IIlshat Mukhametzyanov
AIInfraDeFi

ArbiSense

Autonomous AI agent monitoring Arbitrum DeFi (DeFiLlama, Uniswap v3, Aave v3), producing a 0-100 sentiment score and recording each report immutably on-chain via a Solidity contract.

Tech StackSolidity, Web3, Python
Builder
SSteffen Darwin

Reign Alter World copy

X-platform Survival MMORPG w/ unique gameplay-mechanics & “inGame DeFi” (various payment methods & Yield Farm) to be “Self-Sustaining” economic, allowing players to earn through Player Supply & Demand

Tech StackWeb3, Solidity, Unity3D, Firebase, Photon, Blender, GIMP, Audacity
Builder
GGregorius Bangkit Sukarma
GameFiGamingDeFi

Kabon

Kabon is an AI treasury copilot that helps users discover, evaluate, and allocate capital across fragmented DeFi and tokenized asset opportunities on Arbitrum.

Tech StackNext, Web3, Ethers, Solidity, thegraph, React, Arbitrum
Builder
DDickson Kamasah
DeFiAIRWA

Andromeda Core

Andromeda Core is a Verifiable Reputation Layer that transforms on-chain behavior into actionable TrustScores using the AVIP protocol. By utilizing Shannon Entropy for Sybil detection and asymmetric temporal decay, we provide the Arbitrum ecosystem with a tamper-proof infrastructure to audit contributor integrity and secure decentralized governance.

Tech StackReact, Next, Web3, Ethers, Python, Solidity, Rust
Builder
IIlich Blanco
DAOInfraAI
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