From March 28 to 30, 2025, the "Taiyi" hackathon hosted by HashKey Chain and specially sponsored by OKX Wallet and INFINI was successfully concluded in Seoul, South Korea. As the second stop of the "HashKey Hackerhouse" series, this three-day developer conference attracted more than 110 top developers, innovators and Web3 enthusiasts from all over the world. HashKey Eco Labs CEO Kay also attended the event. The event received a total of 11 technical project submissions, and finally 9 teams stood out with their breakthrough solutions and won track awards.
This hackathon is anchored by four core tracks: PayFi, Social, AI & AI Agent, and AI Infra, and fierce competition is held around the theme of "Building a Compliant and Secure Web3 Financial Ecosystem". This competition design that deeply integrates financial compliance, social fission, artificial intelligence and infrastructure not only demonstrates the forward-looking nature of technology, but also highlights HashKey Chain's accurate observation of industry pain points.
Track decoding: ecological ambitions behind four propositions
1. PayFi: Next-generation financial protocol innovation
As the core engine connecting traditional finance and Web3 ecology, the PayFi track focuses on three breakthrough directions: the development of instant payment protocols based on cross-chain technology, AI-driven quantitative strategy optimization, and the construction of a decentralized identity credit system. Participating teams need to explore the deep integration of real-world asset flows and information flows with the on-chain value network under the compliance framework of HashKey Chain.
2. Social: Reshaping the Attention Economy
For any public chain ecosystem to achieve large-scale application, social scenarios are an indispensable infrastructure. The participating projects need to deeply integrate the on-chain identity and social relationship graph, design an incentive model that converts user attention into quantifiable benefits, and create a new paradigm for value capture and distribution for tens of millions of users.
3. AI & AI Agent: Opening up the era of seamless intelligent interaction
AI & AI Agent requires developers to create on-chain intelligent entities with autonomous decision-making capabilities. Entries can include personalized wealth management consultants, smart contract code auditing and vulnerability monitoring systems, automated workflow engines across DApp operations, and on-chain data intelligence analysis and visualization tools, etc., lowering the threshold for Web3 use through deep learning and automation frameworks.
4. AI Infra: Forging a digital toolbox for developers
As the underlying support for ecological prosperity, the AI Infra track focuses on collecting infrastructure to improve development efficiency, including development kits that achieve deep integration of AI frameworks such as HashKey and LangChain/MCP, high-performance data availability layers for AI training, smart contract automated testing and deployment tool chains, as well as visual DApp building platforms and low-code components to provide full life cycle support for ecosystem developers.
Award-winning projects: technological breakthroughs and ecological value
After fierce competition and multiple rounds of review, outstanding projects from each track stood out, fully demonstrating the outstanding strength of the contestants in technological innovation and commercial application. The following is a detailed introduction to the winning projects in each track:
1. PayFi track
——Champion: OSY Optimized Stable Yield
Project Introduction: OSY is a stablecoin yield aggregator that redefines stablecoin investment through automated yield optimization and enables seamless operations on all DeFi protocols and blockchains. Users can easily deposit stablecoins through personalized smart wallets and immediately receive interest-bearing stablecoin osyUSD representing their dynamically managed investments.
GitHub link: https://tinyurl.com/y3nvytyk
—— Runner-up: Portal Trade
Project Introduction: Portal Trade is a decentralized lending and arbitrage trading protocol built on blockchain technology. With the help of smart contract architecture, Portal Trade provides a safe and efficient system where users can earn more by authorizing their earnings to the arbitrage robots run by the protocol.
GitHub link: https://tinyurl.com/2t2cfwpa
2. Social Track
——Champion: Cookey
Project Introduction: Cookey is a quiz competition application built on HashKey Chain. It combines blockchain technology with entertainment interaction to provide users with a brand new learning and entertainment experience.
GitHub link: https://tinyurl.com/53a9f7pk
3. AI & AI Agent Track
——Champion: ChatPulse
Project Introduction: This is a Telegram robot that automatically analyzes and records user behavior scores in group chats. It uses large language model technology to analyze message context and score based on user behavior. The collected data will be encrypted and recorded on the HashKey blockchain every hour to ensure transparency and credibility.
GitHub link: https://tinyurl.com/24cj8599
—— Runner-up: Haifu
Project Introduction: DeFi and AI combined virtual idol distribution platform (DeFAI), users can create personalized digital characters by training AI models and tokenize them into NFT. The project realizes the deep integration of AI generated content (AIGC) and on-chain IP copyright management.
GitHub link: https://tinyurl.com/3wsx93cd
4. AI Infra Track
——Winner: HashScope
Project Introduction: HashScope is an API platform built on HashKey Chain, which aims to connect real-world data with blockchain technology and reward data contributors with HSK tokens. HashScope provides high-quality, real-time data through standardized APIs and integrates the Model Context Protocol (MCP) to enable AI agents to easily access this data.
GitHub link: https://tinyurl.com/uzurjb5t
5. Student Awards (in no particular order)
——Battle Beatle
● Project Introduction: A prediction market platform inspired by Polymarket, where users can predict event outcomes by analyzing real-time data, participating in market discussions and formulating strategies, and receive rewards based on market performance.
——Key-Bot
● Project Introduction: Key-Bot simplifies the user entry process of HashKey Chain. By directly integrating wallet creation, cross-chain asset, transaction and portfolio management functions in Telegram, it greatly reduces the operational complexity and entry threshold, allowing new users to quickly get started without tedious operations.
● GitHub link: https://tinyurl.com/32matepv
——Invoice Pay
● Project Introduction: Invoice Pay converts invoices into NFTs and real-world assets into digital assets, which not only improves the efficiency of capital turnover, but also ensures the transparency and security of transactions, providing more flexible and convenient financing solutions for both borrowers and lenders.
● GitHub link: https://tinyurl.com/4cwrjv2v
Taking compliance as an anchor, moving towards the world
HashKey Chain has always attached great importance to the Asian market and actively provided resources support for developers. Whether it is hackathons, Grant programs, or the upcoming accelerator program, HashKey Chain is creating a more friendly environment for developers, helping them innovate on the chain and expand into the international market.
Currently, HashKey Chain has attracted more and more attention from developers, who are optimistic about its compliant and stable development path, as well as its deep layout in the Asian market. Many teams have deployed applications on the chain, leveraging its high performance and security advantages to explore more possibilities.
The "HashKey Hackerhouse" series will continue to advance. In addition to "Taiyi", 3 hackathons will be held this year to attract more developers to join its ecosystem. Stay tuned!
About HashKey Chain
HashKey Chain is the preferred public chain for financial institutions and RWA assets to be put on the chain, and is committed to promoting the compliance and scale development of Onchain Finance. As a compliance-friendly blockchain infrastructure, HashKey Chain provides institutions with a secure and transparent on-chain environment.
With a secure and reliable technical architecture, HashKey Chain inherits the decentralized security of Ethereum, and improves transaction efficiency through high-performance optimization, ensuring the stability and traceability of assets on the chain. In addition, HashKey Chain adopts a high-performance, low-cost solution, providing extremely low gas fees and high throughput, enabling MMF, bonds, funds, stablecoins and other financial assets to circulate efficiently, reducing the operating costs of institutions on the blockchain.
HashKey Chain is working closely with the world's leading financial institutions and compliant Web3 projects to provide optimal solutions for application scenarios such as institutional-level DeFi, RWA tokenization, and stablecoin settlement, accelerating the digitalization and intelligent upgrading of the financial system.
HashKey Chain official website: https://hsk.xyz/
