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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
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
D

Doraking

Champion
3
No.2
m

mandylau72

Champion
3
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

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
IIkeh Chukwuka
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
Ssergio R
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
MMohamed Wael
DeFiAIInfraDAO

trAIder

A speculation-market protocol on live AI trading performance.

Tech StackSolidity, Python, Next, React, Node, Web3, Typescript, OpenZeppelin
Builder
CChimdalu Ofoegbu
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 Osewe
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

Dojifunded

Dojifunded is building the on-chain infrastructure to fund traders and autonomous strategies.

Tech StackReact, Next, Rust, Solidity, Ethers, Vue, viem
Builder
AArafath Shariff
DeFiAIRWA

FrameOS — Multi-Chain Mini App Hub for Farcaster

FrameOS brings DeFi into Warpcast. Swap via 0x Protocol, deploy ERC-20 tokens on Arbitrum & Base. Live, open source, built with viem + Next.js 16

Tech StackSolidity, TypeScript, React / Next.js, DeFi, Arbitrum, viem, Supabase, 0x Protocol
Builder
Wwen zhang
DeFi

ArbiSim Guard

Pre-flight simulation layer for Arbitrum AI agents - validate every transaction in an ephemeral fork before it touches mainnet.

Tech StackNext, Node, Python, TypeScript, Foundry / Anvil, Cloudflare Workers, MCP SDK, Neon PostgreSQL
Builder
RRahul Pandey
DeFiInfraAI

BetterDev

BetterDev is a chain-agnostic trust, reputation and coordination protocol for engineering communities, using Arbitrum first for Passport identity, verified participation, and and fair meetup matching

Tech StackNext, React, Web3, Ethers, Node, Solidity, chainlink vrf
Builder
FFranklyn Ezeugonna
SocialFiNFTInfraDAO
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