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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

ArbiCycle

ArbiCycle is a trustless rotating savings circle (Ajo / Chama / Stokvel) on Arbitrum. 500M people worldwide save this way through one coordinator who can disappear with the pot — ArbiCycle replaces that coordinator with smart contracts. Chainlink VRF picks the payout order provably fairly, Chainlink Automation triggers rotations and penalties autonomously, and idle contributions earn yield on Aave v3. Defaulters are auto-kicked and their on-chain reputation drops. Live on Arbitrum Sepolia, deployable to Robinhood Chain. The tradition stays — the single point of failure goes

Tech StackReact, Solidity, Web3, Node
Builder
HH2SO4
SocialFiDeFi

LowBid

Building a Lowest Unique Bid Auction platform on Arbitrum, where users compete strategically and the winner is the participant who places the lowest unique bid.

Tech StackSolidity, Next, Node, React, Web3, Ethers
Builder
CCaner Yakupoglu
DeFiRWASocialFiGaming

CoverFi

The world's first DeFi on-chain Credit Default Swap for RWA tokens.

Tech StackSolidity, Typescript, Javascript
Builder
MMike
DeFiRWA

siri mirim4 copy

teste 4

Tech StackWeb3, Solidity, Go, Move
Builder
Zzorzalcripto
DeFiDAOOther

Tessera

Tessera is a non-custodial lending protocol built for tokenized stocks.

Tech StackNext, Web3, Node, Rust, Solidity
Builder
RRitik Pandey
DeFiRWAAIInfra

Arbiguard

ArbiGuard is an autonomous risk firewall for tokenized-asset protocols. It scores live transactions on-chain in a Stylus risk engine, enforces protocol-signed risk policies, and trips a hysteresis circuit breaker the moment an exploit pattern crosses a blocking threshold — then writes the threat signature to a shared registry so every other protected pool is immunized against the same attack. Built for the capital coming to Arbitrum and Robinhood Chain, where a single exploit on tokenized equities is a regulatory event, not just a TVL loss.

Tech StackReact, Web3, Ethers, Solidity, Node
Builder
IIbrahim Abdulkarim
DeFiAI

RWA.Index

Autonomous AI-managed tokenized-stock index fund on Robinhood Chain. ERC-4626 vault with an LLM portfolio manager bounded by on-chain guardrails.

Tech StackReact, Next, Web3, Solidity, Node, TypeScript, viem, Foundry
Builder
RRayyer
RWADeFiAI

Pact Network

We Provide Refunds for x402 Payments. Wrap calls through our proxy or CLI, pay a small fee per call, get an automatic USDC refund when the API breaks its SLA on latency, availability, or schema.

Tech StackNext, Web3, Solidity, Rust, x402, PayAI
Builder
RRichard (Rick)
AIOther

WorkProof

A decentralized freelance escrow marketplace

Tech StackNext, React, Solidity, Web3, Node, Python
Builder
Mmfon ante
SocialFiInfraAI

Sigil

Every DeFi intent today dies after execution — you swap, it's done; you deposit, it's forgotten. Sigil changes that. Type your intent in plain English — "Put 2 ETH into yield, exit if ETH drops below $3,500" — and an AI agent decomposes it into on-chain actions. Immediate steps execute right away, while persistent on-chain watchers keep monitoring prices, governance, and risk. When conditions change, Sigil automatically creates and executes a new intent — no human needed. It's the difference between a one-time instruction and a standing guardian for your position. Built on Arbitrum, designed to extend across Orbit chains and Robinhood Chain.

Tech StackNext, Ethers, Solidity, Web3
Builder
PPrecious Jeremy
DeFiAIInfra

Caplane

Pay-per-capability for agents: a scarce on-chain right and its execution settle in one atomic transaction nobody can coordinate, censor, or fake.

Tech StackReact, Next, Web3, Solidity, ERC-7002, Node
Builder
DDavid Zapata
AIInfraRWA

xB77

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

Tech StackWeb3, zig, stylus, wasm
Builder
Ff dzkinha
AIInfraDeFi
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