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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

Promus

Promus is a CLI-hosted agent runtime where the agent's identity, memory, reasoning, wallet, and economic life are an on-chain entity

Tech StackSolidity, Rust, Next, Bun, ERC-7857, TypeScript, OpenTUI
Builder
JJeremiah Jerry
AINFTInfra

Tychi AI

Tychi: terminal wallet for humans, MCP wallet for agents — keys local, Arbitrum onchain.

Tech StackNode, MCP, Ethers, TypeScript, Web3
Builder
YYash Singh
AIInfra

Parvalon

The missing corporate-actions layer for tokenized stocks. On-chain dividends, stock splits, and record-date semantics — for the tokens that already exist.

Tech StackReact, Solidity, Web3, Next
Builder
IIDN FX
DeFiRWAInfra

RANTAN

Buy to Earn, PERSONALIZED COMMERCE With Data Royalty

Tech StackWeb3, Next, Python, Solidity
Builder
Hheon
NFTRWAAIInfra

Parmelia

Parmelia is a stablecoin payments app on Arbitrum that lets people receive, request, swap, and manage crypto payments through simple links, QR codes, and a PWA.

Tech StackReact, Web3, Node, Solidity, Arbitrum, Cloudlare, Foundry, Firebase
Builder
DDaniel Cueto
DeFiInfraSocialFi

Treasury GuardRail

AI-powered treasury management system designed for DAOs and organizations Arbitrum Robinhood. By bridging on-chain transparency with off-chain AI intelligence, TG automates risk management, asset rebalancing, and operational payments, ensuring treasury health and sustainability without constant human intervention.

Tech StackNext, Web3, Solidity, Ethers, CI/CD, Node
Builder
BBratipah kioko
DeFiAIInfra

Nomera

Nomera - Skip the airport kiosk. Swap with a local. Nomera is a peer-to-peer, location-based crypto exchange. Find someone near you, meet for coffee, and swap local cash for tokenized US stocks (TSLA, AMZN, NFLX…) or stablecoins — with every trade protected by an on-chain escrow so neither side can run off with the money. Built for the Arbitrum Open House London Buildathon. Runs on Arbitrum Sepolia and Robinhood Chain testnet.

Tech StackReact, Next, Web3, Ethers, Solidity, Node
Builder
YYigitcan Gökmen
SocialFiDeFiRWA

Morbit

Non-custodial lending infrastructure for tokenized real-world assets, built on Robinhood Chain Testnet and Arbitrum.

Tech StackReact, Ethers, Solidity, Web3, Next
Builder
Bbruh_codes
DeFiRWAInfra

Unice Protocol

Prediction market but everyone is winner.

Tech StackNext, Solidity
Builder
IInsizzaki Alfitra Qolbi
DeFi

ArbiFlow Agentic Settlement

Agentic invoice escrow on Arbitrum with x402 payments, AP2-style mandates, ERC-8004-style reputation, TEE validation, service bonds, dispute evidence, and settlement receipts.

Tech StackReact, Next, Web3, Node, Solidity, Ethers
Builder
AAydar Khusaenov
AIDeFiInfra

contrarian

The AI Agent That Challenges Every Onchain Decision Before It Becomes a Transaction

Tech StackNext, React, Web3, Node, Solidity
Builder
RRakyavara Artomily
AI

Phylax SDK

Institutional-grade control layer for autonomous AI agents, ERC-4337 smart accounts, delegated session keys, and centralized gas sponsorship to enforce secure, bounded, and verifiable on-chain.

Tech StackWeb3, Ethers, Solidity, Pimlico, Viem, Permissionless, ERC-4337, Phylax SDK
Builder
BBagas Rizki Gunardi
AIOtherInfra
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