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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
z

zorzalcripto

regencia
Champion
51
No.1
z

zcy22606

chengdu
Champion
26
No.2
D

David Barasa

Kenya
Champion
19
No.3

Project Highlight

Project Highlight

EduBricks

EduBricks is a platform enabling fractional ownership of tokenized real estate, making investments more accessible

Champion

7th Place

Arbitrum X EDU Chain Mini-Hack

Pencil Finance

Bringing $3 Trillion in Student Loans On-Chain

Champion

1st Place

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

First Prize

Arbitrum X EDU Chain Mini-Hack

VineFinance

Vine Finance is a decentralized, modular revenue strategy protocol.

Champion

Third Prize

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

Second prize

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

Honorable Surprise Mention

Arbitrum Open House India: Online Buildathon

aiSports - NBA Daily Fantasy

Web3 fantasy sports that feel like Web2 - stablecoin contests paid out onchain. Live on Arbitrum sepolia - contests running everyday. Fast & Friendly UX, and transparent payouts.

Tech StackReact, Solidity, Web3, Ethers, Node, Next
Builder
CCJ Carnicle
NFTGamingDeFiAI

Arbnomo

The first on-chain binary options trading dapp on Blockchain

Tech StackNext, Web3, Solidity, Supabase, Pyth Oracles, x402
Builder
AAmaan Sayyad
SocialFiGaming

Railbridge

Railbridge is a financial suite for x402 merchants. A complete merchant dashboard to track x402 revenue, API metrics, and unified account balance. Powered by cross-chain facilitator

Tech StackWeb3, Node, Next
Builder
MMarco Widjaja
DeFiInfraAI

ChargeFrog⚡

A Stylus-Compiled Investor-Grade RWA Tokenization Engine for Community-Led EV Charging Infrastructure on Arbitrum.

Tech StackStylus (Arbitrum), RWA Tokenization, ERC-1400+ERC-3643 Dual Standard Security Tokens, ERC-1643 Legal Documents Anchoring, Hardware: EVSE, Firmware, OCPP Controller, ERC-1594 Validation + ERC-1410 Partitioning, ERC-1644 Regulatory Control (Reg CF, S, D), DIDit KYC Provider
Builder
JJimmy Tan Zhi Xuan
RWAInfra

RikuyApp

Rikuy — anonymous corruption reporting on a custom Arbitrum L3. ZK-proven identity, gasless UX, AI-validated evidence, immutable on IPFS. Solidity + Rust/Stylus contracts, 73 tests, live chain, real users in Bolivia. Whistleblowers stay anonymous. Evidence never disappears.

Tech StackSolidity, Rust, Web3, Node, Ethers
Builder
DDaniel Hidalgo
OtherDAO

Arbnomo

The first on-chain binary options trading dapp on Blockchain

Tech StackNext, Web3, Solidity, Supabase, Pyth Oracles, x402
Builder
AAmaan Sayyad
SocialFiGaming

FanDonor

We are addressing the issues of monetization of Real-World Assets. In this platform, creators can tokenize their art and accept donations.

Tech StackReact, Solidity
Builder
SSanthosh Nair
NFTRWASocialFi

RealBot

Trustless DeFi trading agent verification using STARK proofs on Arbitrum Stylus. Generates browser-side STARK proofs of Sharpe ratio from real GMX V2 trades and verifies them on-chain — no trusted set

Tech StackWeb3, Next, Rust, DeFi, ARB, Solidity
Builder
Hhoddukzoa
DeFiInfra

ClawPay

From telegram tell your OpenClaw to order from any website - it creates a secure credit card on demand from crypto and pays for the order

Tech StackReact, Web3, Ethers, Node, Solidity
Builder
AAdil Husain
InfraAISocialFi

ClawPay

From telegram tell your OpenClaw to order from any website - it creates a secure credit card on demand from crypto and pays for the order

Tech StackReact, Web3, Ethers, Node, Solidity
Builder
AAdil Husain
InfraAISocialFi

Hyperkit

Web3 Infra for SDKs & AI Agents AI‑native dApps across all major L1 and L2 blockchains.

Tech StackNext, Solidity, Python, Node, Web3, Ethers
Builder
HHyperkit
AIInfraDeFi

FanDonor

We are developing a platform based on Blockchain technology to address the issues of monetization of Real-World Assets. In this platform, creators can tokenize their art and accept donations.

Tech StackReact, Solidity
Builder
Ssnair2001
NFTRWASocialFi
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