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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

Nyxora AI

Nyxora is Your Personal Web3 Assistant—a highly secure, non-custodial AI Middleware that bridges on-chain DeFi execution with off-chain OS automation. Built with a Zero-Trust 3-Tier IPC Architecture and an advanced 4-Layer Cognitive Memory, it empowers users to execute natural language smart-swaps, automate DeFi habits, and connect external agents via MCP on Arbitrum—all without ever exposing their private keys to the AI.

Tech StackReact, Node, Rust, Web3, @napi-rs/keyring, viem, Solidity, Arbitrum
Builder
PPerasyudha
InfraAIDeFi

PHANTOM Protocol

Privacy-preserving prediction markets powered by Fhenix FHE on Arbitrum. Trade forecasts, automated price rounds, and multi-outcome markets while keeping market sentiment and positioning private.

Tech StackSolidity, React, Web3, Ethers
Builder
MMrBenDev
DeFiAIOther

Mandate —— Safe Automation for Tokenized Assets

Mandate is a policy firewall for AI-agent finance. It keeps user funds in a smart account and lets agents act only when onchain rules approve, blocking unsafe actions before funds move.

Tech StackNext, Solidity, Web3, React
Builder
SStarryDesert
AIDeFiInfra

ArbiGame Agent

ArbiGame Agent is an AI-powered onchain game builder for Arbitrum. Describe a game idea, and the app uses Gemini to generate a structured GameSpec, Solidity game template, and playable frontend preview. The current demo includes a live solo dice game on Arbitrum Sepolia where players connect a wallet, start a round, roll dice, and claim prizes onchain.

Tech StackReact, Next, Web3, Ethers, Solidity
Builder
DDoraking
GamingAIInfra

FlowState

A hybrid payment protocol that solves the N+1 Signature Problem for AI agent payments. Combining x402's HTTP-native service discovery with continuous MNEE token streams on Ethereum.

Tech StackSolidity, Typescript, React, Vite, Javascript, Tailwind CSS, Gemini API, Arbitrum Ethereum
Builder
DDavid Pratama
AINFTDeFi

Weave

Onchain index protocol for tokenized equities on Robinhood Chain. Create thematic baskets of stocks, earn revenue as a creator through ERC-7641, and get AI-assisted composition from natural language investment theses. For investors, discover thematic indices to buy and hold a diversified stocks portfolios.

Tech StackNext, Web3, Solidity, Go
Builder
00xull (Yemi)
RWADeFiAI

bvcc-wallet-agent

BVCC Wallet Agent is a self-custodial smart wallet on Arbitrum with personal and AI-agent modes, using WebAuthn, ERC-4337 and on-chain permissions for safer delegated execution.

Tech StackNext, React, Web3, Solidity, Node, Ethers, ERC-4337, WebAuthn
Builder
RRami8612
DeFiAIInfra

OBSCURA

Privacy-first financial operating system on Arbitrum powered by Fhenix CoFHE, combining encrypted payments, credit, governance, identity, mobile apps, and AI-agent infrastructure.

Tech StackReact, Web3, Node, Solidity, Ethers, Python, Next, FHE
Builder
DDevmo
DeFiAIInfraDAO

trAIder

A speculation-market protocol on live AI trading performance.

Tech StackSolidity, Python, Next, React, Node, Web3, Typescript, OpenZeppelin
Builder
BBensage
DeFiAI

Arbitrum Machine RWA framework

On-chain infrastructure for tokenizing physical machines on Arbitrum: from verified identity and NFT collateral through ERC-3643 security tokens and yield distribution.

Tech StackNext
Builder
BBleyle
RWANFTAI

Inflexion

Hedge Uniswap v3 impermanent loss for a fixed upfront premium — capped, fully collateralized, trustless. The first on-chain market for LP IL risk, on Arbitrum.

Tech StackSolidity, Rust, Stylus, Next, Node, Python, TheGraph, ChainLink
Builder
AAlexandre LEMIERE
DeFiNFTInfra

SPECTER

SPECTER: Stealth Post quantum enabling Cryptographic Transaction Engine for Routing

Tech StackNext, Solidity, Web3, Rust
Builder
PPranshu Rastogi
DeFi
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