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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
S

Skia Variants

The Blockchain
Champion
13
No.2
H

Hafiidh Luqmanul Hakim

Indonesia
Champion
7
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

CommitCircle

CommitCircle makes group commitments (saving challenges, shared goals, team pools) non-optional by putting the release rule on-chain: members lock USDC in a circle vault that only unlocks by a quorum vote of member nominations or by a deadline, with exact 1:1 accounting.

Tech StackSolidity, Hardhat, TypeScript, React, USDC, Arbitrum
Builder
CCircle Forge

Trestle-DeFi

Trestle DeFi bridges the gig economy, digital creators, and real-world assets (RWA). Our multi-chain architecture features functional Marketplace Escrow modules, Dutch Auction price discovery, and fractionalized RWA tokenization infrastructure. Backed by automated AI-driven predictive matching and secure decentralized dispute resolution layers, Trestle is building a self-sustaining financial framework optimized across Arbitrum Sepolia, Base Sepolia, and Polygon networks.

Tech StackReact, Next, Web3, Node, Solidity, Ethers, Cloudflare, AI / Llama
Builder
JJo Kam
DeFiRWAAI

Fieldcast Buyer Agent

An AI agent that pays for API data only after verifying the fields are in the document, spending from an on-chain budget vault on Arbitrum.

Tech StackWeb3, Node, Solidity
Builder
MMuhammet Karakurt
AIInfra

Neon Mech Legion (NML)

A fully on-chain mech army: collect, fuse 3-into-1, and battle — live on Robinhood Chain.

Tech StackWeb3, Python, Ethers, Node, Solidity, Java
Builder
EEve Miranda
NFTGamingSocialFi

NOMEN

Find AI agents for your work, inspect public identity evidence, and review wallet-signed complaint history across test networks.

Tech StackReact, Next, Node, Python, Solidity
Builder
MMetehan İzal
InfraAI

HoodFi Names

HoodFi Names is a lifetime ENS naming service on Robinhood Chain. Users register human readable names (name.hoodfi.eth) , Names work across all ENS compatible wallets and platforms. Simple and safe.

Tech StackSolidity, Python, Javascript, Ruby, Typescript, CSS
Builder
HHector Morel
SocialFiInfraOther

Agent Guardian

On-chain security layer for autonomous AI agents that enforces permissions, spending limits, approvals and emergency recovery before transactions reach the blockchain.

Tech StackWeb3, Ethers, Solidity
Builder
RRinat Nabiev
InfraAIDeFiDAO

Zoniq Finance

Zoniq Finance is a hybrid PayFi relay protocol built on Arbitrum that bridges local fiat payments (QRIS) with on-chain settlement. It enables mainstream consumers to purchase digital assets seamlessly without a Web3 wallet, while securing protocol revenue through an automated merchant deposit sub-ledger executed on Arbitrum L2.

Tech StackReact, Web3, Ethers, Solidity, Node, Arbitrum, Supabase, TypeScript
Builder
HHarun Tamale
DeFiInfraRWA

Tnega

A home for on-chain AI agents. Check what works before you pay.

Tech StackReact, Node, Python, Solidity, Web3
Builder
SSaba Azadegan
AIOtherInfra

pfwafun

PFWA is a permissionless prediction market built on Robinhood Chain, where anyone can create and trade markets around onchain assets.

Tech StackNext, Ethers, Solidity, React, Node, Web3
Builder
MMiracle Otugo
DeFiOtherInfra

Dice Protocol

Faster RNG on Robinhood Chain first, then Arbitrum: live verifiable commit-reveal randomness for games, AI agents, DeFi and real-time apps.

Tech StackWeb3, Python, Solidity, Ethers, Node
Builder
AAlireza Kheirabadi
InfraGamingDeFiAI

LaunchLens

Explainable launch intelligence for Robinhood Chain.

Tech StackSolidity, Web3
Builder
LLateef Fatai
AIInfra
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