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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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Builder Highlight

Most Hackathon Won

Most Project Built

Builder Highlight

Most Buildathon Won
E

Edy Cu

Jakarta
Champion
1
No.1
c

chubbyzroxas

Champion
1
No.2
Y

Yayan Fauzi

Champion
1
No.3
Most Project Built
z

zorzalcripto

regencia
Champion
61
No.1
A

Amaan Sayyad

Navi Mumbai, India
Champion
34
No.2
A

Aaditya Rawat

Champion
29
No.3

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

CLEAR-GAS

Pay gas in Paxos USDG when you have zero native ETH. An autonomous on-chain gas clearinghouse for Robinhood Chain with Arbitrum Stylus Rust/WASM preflight for a 20x fee reduction.

Tech StackSolidity, Python, Node, Ethers, Web3, Rust
Builder
MMr Sage
RWAInfraDeFi

Nokturn

Batch settlement for tokenized stocks on Robinhood Chain, built for the 74% of trades that happen while NYSE is closed. One clearing price, and a verifiable venue baseline on every fill.

Tech StackSolidity, Next, React, Node, Rust, Web3
Builder
WWangsit Nursyahada
DeFiRWAInfra

BellGuard

BellGuard protects tokenized-stock borrowers from unfair off-hours liquidations using price-confidence scoring, cure periods, reserve repayment, and partial liquidation on Robinhood Chain.

Tech StackSolidity, Python, Rust
Builder
TTioluwaleyi
DeFiAI

StockReef

StockReef is an automatic risk-control protocol for tokenized stock borrowers and USDG lenders. It reduces outstanding debt before market closures through borrower-funded repayments, gradually tightening thresholds, and partial liquidation, and then gives recovery priority when the market opens again.

Tech StackSolidity, Ethers, Node, Python, Next, React
Builder
AAwaan Siddiqui
RWADeFi

ArbiAgent Sepolia

ArbiAgent is an AI-powered yield vault on Arbitrum. The AI signs rebalance signals for Aave V3, you submit them from your wallet, and the smart contract verifies the signature before executing.

Tech StackSolidity, Node, Ethers, Web3, Python, React
Builder
JJesús Alfaro
DeFiAI

Xero Protocol

Xero Protocol creates tradable dividend markets for Robinhood Stock Tokens. Reinvested dividends are trapped inside each token’s uiMultiplier. Xero separates base equity exposure (PT) from reinvested dividend exposure (YT), enabling independent trading and onchain dividend yield curves.

Tech StackReact, Ethers, Solidity, Node, Rust, Next, Web3, Stylus
Builder
TTomiwa Adeyemi
DeFi

Quorum

Proven exploits as on-chain claims, Quorum publishes a smart-contract bug only after it runs the exploit that drains it on a mainnet fork.

Tech StackPython, Solidity, Web3, Foundry
Builder
MMustapha Alex
InfraAIDeFi

Vibe

Vibe is a social app where fans collect and trade passes to join their favourite creators’ private lounges. Vibe Check lets fans discover new creators through mystery passes while generating ongoing creator earnings.

Tech StackNext, Node, Solidity
Builder
WWen Kai Lau
SocialFi

Arb Guardian

Bounded spending for AI agent treasuries: policy is enforced inside Safe.execTransaction, so an unsafe payment is refused on-chain before it runs. Live on Arbitrum Sepolia and Robinhood testnet.

Tech StackSolidity, Ethers, Web3, React, Node
Builder
SSITHU NYEIN
InfraDeFiAI

DRAGO X PROTOCOL

AI-powered cross-border trade-finance infrastructure using blockchain settlement, digital escrow, tokenized assets and risk intelligence for African global trade.

Tech StackReact, Next, Web3, Node, Python, Ethers, Solidity
Builder
JJOHN EBSTER-DAVIDS
DeFiInfraRWAAI

Borneo

Borneo turns "I want this" into a settled payment on Arbitrum. An AI agent finds products across an open merchant registry and pays in USDC via x402 through our verified BorneoCheckout contract. Locked quotes stop prompt injection from redirecting funds.

Tech StackReact, Next, Node, Web3, Ethers, Solidity
Builder
AARIEL ONG
DeFiAIInfra

Iceburg

Iceburg is a sealed-bid, uniform-price issuance protocol for real-world, security-token-style offerings

Tech StackReact, Ethers, Solidity, Node, Web3
Builder
Eezeo
DeFiDAORWA
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