Logo

Open House Archive

Welcome to the Open House Archive - your central repository for accessing all previous Open House buildathons and projects.

projects-banner

All Projects

By ProjectBy Buildathon
Learn
  • Explore Course
Build
  • Explore Buildathon
  • Project Archive
Hack
Hack Coming Soon
  • Explore IRL Hackhouse
  • How to Qualify
  • Past Events

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

QARBI

Autonomous AI agent civilization on Arbitrum with Conway state engine, hybrid post-quantum security, and onchain settlements.

Tech StackReact, Next, Vue, Web3, Python, Solidity, Rust, NIST FIPS 204 ML-DSA-65
Builder
MMartin Luther
InfraAIDeFi

orbisend

Stablecoin privacy infrastructure for confidential settlement and private payouts on Arbitrum & Robinhood Chain.

Tech StackReact, Node, Next, Web3, Solidity
Builder
EE
InfraDeFiOther

Mayarin

Payments infrastructure for the borderless economy. One integration, local-currency pricing, stablecoin settlement, payouts in minutes.

Tech StackSolidity, React, Typescript
Builder
RRy
InfraOther

链上生命 | Chain Life

任意 Arbitrum 地址 → 一只活的链上生命体：形态、颜色、能量与年龄，全部由真实链上数据实时驱动——余额、交易数与 Token 持仓构成它的血肉。9 阶段生命周期，从原始到远古；黑洞吸积盘渲染，12 主题调色板。Living NFT 上链进化：GMX 真实交易喂食成长，AI 撰写钱包生平，身份评分 API + Sybil 女巫筛查。一钱包，一生命体。

Tech StackWeb3, Solidity, Node
Builder
Mmontree
NFTAI

Alienzone

DeFi Native Anime Franchise

Tech StackReact, Next, Solidity
Builder
HHPM
GamingDeFiSocialFi

Twyne

Twyne is a credit-delegation layer built on top of existing lending markets. It lets users double down on what they already do: passive lenders put their unused borrowing capacity to work for extra yield, while borrowers rent that capacity for a small fee

Tech StackSolidity, Python, Web3, React, Next
Builder
TTaulant Kryeziu
DeFiInfra

OTTO

Infra for launching AI DAOs

Tech StackWeb3, React, Node, Solidity, Ethers
Builder
VVladimir Prosvirkin
DAOAI

Cognivern

Cognivern is a spend-governance control plane for AI agent wallets. Every spend is policy-checked before signing—approved, held, or denied based on budget, vendor, chain, and risk—with FHE-encrypted on-chain budgets keeping limits private. A Gemini 3.1 agent runtime follows a PLAN → EVIDENCE → PREVIEW → CONFIRM → EXECUTE → AUDIT workflow with human approval before spending. Deployed on Arbitrum Sepolia and Robinhood Chain Testnet with Hyperlane cross-chain execution and audit evidence anchored to Filecoin and 0G.

Tech StackReact, Next, Web3, Ethers, Solidity, Node
Builder
Ppapajams
AIInfra

Sentidex

Sentidex is a dapp for perpetual attention markets: live tradable prices on who holds attention in crypto and culture.

Tech StackReact, Next, Solidity, Ethers
Builder
RRichard Robertson
SocialFiDeFi

GREEK

Greek is a complete tokenized Options system that allows anyone to create options and markets around any tokenized asset in a capital efficient manner.

Tech StackReact, Solidity, Next, Web3, Node
Builder
MMahmoud Lababidi
DeFiInfra

Centok

The simplest way to access stocks with fewer bureaucratic barriers and a more tax-efficient path to global investing.

Tech StackReact, Next, Web3, Node, Solidity, NestJs, Prisma
Builder
SSamuel Schramm Meurer
Other

BeyondPlay AI

Tiktok for onchain gaming, Powered by AI

Tech StackNext, React, Node
Builder
SSrini Anala
GamingAISocialFi
  • Previous
  • 1
  • More pages
  • 36
  • 37
  • 38
  • More pages
  • 127
  • Next