ETHSeoul 2024

*"Ethereum is a technology that's home to digital money, global payments, and applications."* -- Ethereum Ethereum is the state of the art technology that provides stacks and ideas for cryptographic protocol, decentralized network infrastructure, consensus algorithm, and decentralized application. As a builder community contest, ETH Seoul Hackathon offers organizer prize to invite all types of builders with a project that offers a novel approach to realize the possibility of Ethereum's technology. The project can be in the form of an enhancement proposal to an on-going EIP or a consumer application that utilize smart contract. Regardless of its category and target, whether it is business oriented or open source public goods focused, ETH Seoul is the stage for the next builder in progress. All ETHSeoul hackers are eligible for organizer track regardless of the type of their project. Projects will be reviewed by the judges and 7 projects will be selected as the finalist to pitch during the Finalist Pitch time.

The First Prize will be awarded to the best project determined by the Finalist Round judges

The Second Prize will be awarded to the second best project determined by the Finalist Round judges

The Third Prize will be awarded to the third best project determined by the Finalist Round judges

### **Description** Building a cross-chain product? Meet Chain Signatures: the latest programmable MPC technology which enables cross-chain protocols to support every chain (even non-smart contract chains), eliminate the risk of bridging, and unify user experience.  Demonstrate a creative use case of the Chain Signatures API in which you use a NEAR account to sign transactions on any given chain, whether it’s Ethereum or Bitcoin. Get creative and explore the beginnings of chain abstraction, where users can do everything from a single account and don’t have to think about which chain they are on! ### **Ideas** * Account Aggregation: control multiple accounts or sign transactions on different chains using only a NEAR account * Multichain Account Abstraction: a single NEAR account that controls multiple accounts across different chains, without the user realizing the involvement of multiple chains; users manage their private keys on the NEAR account  * Protect accounts on other chains with a NEAR smart contract that can only call an MPC to sign when certain conditions are met * Bridgeless Cross-Chain Swaps: atomically swap two accounts on different chains (e.g. $BTC on Bitcoin <> $USDC on Optimism) to execute a cross-chain swap.  ### **Prize Amount** Total: $10,000 USDC 1st 5000, 2nd 3000, 3rd 2000  **DISCLAIMER: If there are less than 3 submissions or the projects do not meet our criteria, we reserve the right to only utilize a part of the funds, or leave the first or second placements null.**  ### **Resources** * [https://linktr.ee/chainsignatures](https://linktr.ee/chainsignatures)  * NEAR testnet * [NEAR Social](https://test.near.social/) * [Testnet Explorer](https://testnet.nearblocks.io/) * Claim your NEAR wallet and testnet tokens from NEAR mentors at the hackathon. * More examples TBA ### **Submission Criteria** * Your deployment should be on the NEAR testnet.  * You are free to incorporate any ECDSA-based blockchain(s) of your choice (Bitcoin, Cosmos chains, L1s/L2s EVM, etc.) **but must include at least one network that settles on Ethereum mainnet (e.g. ETH Mainnet, Optimism, Arbritrum)**.  * Your submission must NOT be a simple fork of an existing example with minimal changes. * Your submission should include a basic readme file explaining the scope of the project. * Your submission should demonstrate a creative chain signatures API use case. ### **Judging Criteria** * Creativity and originality of the idea. * Quality and completeness of the product. * BONUS: Feedback on the chain signatures technology and developer experience to help improve it

### Launch your MVP in NEAR **Prize Amount: 10000 $USDT** Have you ever thought of launching your own business, or do you currently run a startup? This bounty is designed with you in mind, especially if you want to make a mark in Korea’s market. Embrace this opportunity to develop a Minimum Viable Product (MVP) for your innovative idea using NEAR's technology or integrate your existing startup into NEAR’s adaptable tech stack. We encourage you to devise solutions that resonate with Korean cultural nuances and meet the country's distinct market needs. Utilize Korea’s unique business landscape to create offerings that harness advanced technology and align closely with local realities, establishing relevant businesses within the country and competitive globally. There are many ways of integrating NEAR into your startup:  * Harness the power of NEAR's infinitely scalable Layer 1 blockchain, which boasts low transaction fees and rapid finality.  * Benefit from decentralized frontends that eliminate the need for wallet setup while enabling interaction with the Ethereum Virtual Machine (EVM).  * Use NEAR's chain abstraction and account aggregation features to sign transactions across various blockchains seamlessly.  * Leverage NEAR's cost-effective and high-throughput data availability layer, which draws on Ethereum's robust security.  * Additionally, take advantage of the opportunity to deploy your smart contracts on the Aurora EVM, expanding your project's reach and capabilities within the blockchain ecosystem. Judging Criteria: * Team spirit and readiness to progress * UI/UX design quality * Technical excellence * Integration of NEAR or Aurora infrastructure * Value added to NEAR ecosystem

ICP offers two key capabilities for cross-chain integration: threshold ECDSA signing and HTTPS outcalls. In addition, features such as large smart contract storage (400GB), fast consensus (\~1s), high execution capacity, timers,  on-chain encryption (vetKeys), a bridgeless native Bitcoin integration, and decentralized frontend hosting makes it possible to build cross-chain dapps that aren’t possible to build anywhere else.  # 📕Guidance Building multi chain applications with ICP involves no trusted bridge, hub or any intermediary service.  ICP canister smart contracts can generate and sign for an Ethereum address via threshold ECDSA. ICP canister smart contracts can call APIs directly without any use of oracles via HTTPS Outcalls. These two key capabilities enable a whole new range of cross-chain dapps to be built on ICP. For this bounty you can: * Build a cross-chain dapp between ICP and at least 1 ETH Settlement network and EVM chain (including but not limited to Optimism, Arbitrum, Metis, zkSync, OpBNB, Celestia, Scroll, Manta, Polygon, Base, etc.). * The business case for the dapp can be sound. * The dapp can use threshold ECDSA for key management (i.e. a canister on ICP controlling one or more Ethereum EOAs). * The dapp can fetch some EVM on-chain data from any chain. * The dapp can sign and execute some transaction from within a canister to any EVM chain. * Explain the use case and benefits of this setup. * We also accept submissions that do not take advantage of the cross chain/signing capabilities # 🧑‍🎓We judge this bounty based on: * The overall business case of the dapp, i.e. how sound is the business model, how innovative is the product etc. * How well it makes use of ICP technology. * The overall quality of the code. * The design of the user interface and the user experience * Bonus points for using cross chain/signing capabilities of ICP * Bonus points for providing feedback on the developer experience. **Further acceptance criteria:** * Can use threshold ECDSA and HTTPS outcall capabilities of IC * Readme that explains the project and provides information on how to deploy and use. * Open source code (MIT or Apache-2.0 license) * Canister ID(s) of deployment on ICP. # **🔍Resources** * **[Video Workshop: Building Cross-chain Dapps ICP <> EVM](https://www.youtube.com/watch?v=gEuI43g1m94)** * **[ICP Hackathon Cheatsheet](https://dfinityorg.notion.site/ICP-Hackathon-Cheat-Sheet-b2921239266149de81021412f572351c)** * **[TypeScript/JS Starter Example](https://github.com/fxgst/azle-react)** * **[Motoko Cross-chain Starter Example](https://github.com/rvanasa/vite-react-motoko/tree/evm-rpc)** * **[Rust Cross-chain Starter Example](https://github.com/fxgst/evm-rpc-rust)** Examples of dapps you can build include: * Cross-chain messaging. Use ICP to send messages between multiple EVM chains, or between ICP and another EVM. * Cross-chain oracles or automation. Use ICP to provide oracles to other chains, including randomness or getting off-chain data using HTTPS Outcalls, then processing and publishing to an EVM chain. * Utilize ICP as a high-performance side chain or co-processor. * Cross-chain smart contract wallet. Use ICP threshold ECDSA to control other assets on other chains, see [Oisy](https://github.com/dfinity/oisy-wallet) for example. * Cross-chain governance for DAOs. Use threshold ECDSA to enable cross-chain governance. * Cross-chain arbitrage. * Fair minting of EVM NFTs. * Atomic Swaps between Bitcoin and EVM tokens. * More ideas in the [Requests for Startups](https://github.com/dfinity/grant-rfps/blob/main/requests-for-startups.md) * Other submissions will be considered as well # **🏆Prizes** * Winner 1 $10,000 in ICP Developer Grant in ICP * Winner 2 $10,000 in ICP Developer Grant in ICP The grant prizes will be in the form of ICP Developer Grants. The winners will be awarded two $5,000 developer grants each, totaling $10,000 in prizes. The initial $2,500 will be awarded to you directly upon your win, with the remaining $7,500 will be disbursed progressively as you achieve the milestones outlined in your grant proposal, and successively for the multiple grant prizes, per the [DFINITY developer grant terms and conditions](https://support.dfinity.org/hc/en-us/articles/4401932915860-DFINITY-DEVELOPER-GRANT-PROGRAM-TERMS-AND-CONDITIONS).  # 🧙Join our workshop ETH x ICP: Extending Ethereum's capabilities with ICP by Elias Datler, Software Engineer at DFINITY Foundation March 30, 14:00 at Main Stage # 💁‍♂️**Meet the mentors!** Join ICP x ETH Seoul Mentorship TG group * [https://t.me/icpethseoul](https://t.me/icpethseoul) # 🧙Meet ICP community and get help! * Join ICP Dev Discord: [https://discord.gg/efHABgnHcp](https://discord.gg/efHABgnHcp)

Mina is the world’s lightest blockchain, powered by participants. Using zero knowledge proofs, Mina is creating the infrastructure for the secure, democratic future we all deserve. We would like to invite all hackers from from ETH Seoul to build on top of Mina's technology and showcase an innovative projects! ## Materials to reference **Technical Support:** 1. Check out the #zkApps-questions channel on[ Mina’s Discord](https://discord.com/invite/Vexf4ED) 2. Visit the weekly technical office hours: 1. 10:00-11:00 CET Saturdays 2. See the[ ecosystem calendar](https://calendar.google.com/calendar/u/0?cid=Y18xYjIzZjY1MmU1MjY0ZDAwOWM5M2I0MTBjZTc4ZWU3MjIyMjczYWUxN2U3ZGZlYThmYmU5MWI1ZjdiNjNlOWMxQGdyb3VwLmNhbGVuZGFyLmdvb2dsZS5jb20) for more details **Documentation:** 1. [Mina Docs Homepage](https://docs2-git-major-upgrade-minadocs.vercel.app/) 2. [Getting started with zkApps](https://docs.minaprotocol.com/zkapps/how-zkapps-work) 3. [zkApp Developer Tutorials](https://docs.minaprotocol.com/zkapps/tutorials/) 4. [o1js Reference](https://docs.minaprotocol.com/zkapps/o1js-reference) 5. [o1js GitHub issues](https://github.com/o1-labs/o1js/issues) 6. [Protokit Framework](https://github.com/proto-kit/starter-kit) 7. [Protokit Resources](https://protokit.dev/) **Resources:** * [O(1) Labs ‘Mina Book’ on proof system](https://o1-labs.github.io/proof-systems/introduction.html) * [Mina Protocol Blog](https://minaprotocol.com/blog?cat=69) * [O(1) Labs Blog](https://blog.o1labs.org/) * [Ideas for o1js primitives (aka building blocks)](https://www.notion.so/4fe3361e205349d5abbe7c8170f2a3f1?pvs=21)

## **About** Astar zkEVM is an Ethereum Layer-2 scaling solution leveraging Polygon's Chain Development Kit and cutting edge zero-knowledge cryptography to enable off-chain transaction execution, with finality and security guarantees provided by Ethereum. In coordination with our key partners, Astar zkEVM is well-positioned to take advantage of the extensive developer base and well-established toolset existing in the Ethereum ecosystem, and boasts the following key features: * Higher TPS than Ethereum or Astar Substrate EVM - Leveraging zk rollup architecture, transactions are parallelized on Layer 2 and submitted on-chain to Layer 1 in batches, supercharging web3 games and DeFi applications requiring high performance. * Lower Transaction Fees compared to Ethereum - Due to the transaction batching, as explained above. * Full EVM-equivalence - Not only EVM compatibility; Equivalence. Smart contracts that work on Ethereum also work on Astar zkEVM. See the [smart contract section](https://docs.astar.network/docs/build/zkEVM/smart-contracts/) for more information. * Native Account Abstraction - The Astar zkEVM provides native features designed to revolutionize the end-user experience, and make it seamless. See the [Account Abstraction section](https://docs.astar.network/docs/build/zkEVM/integrations/account-abstraction/) to learn more about how to refine the end-user experience. * Recognized Partners - Established names and brands that developers trust power the Astar zkEVM. See the [integrations section](https://docs.astar.network/docs/build/zkEVM/integrations/) for more information about 3rd party service providers. * Interoperability and Exposure - With Astar zkEVM, we are supporting interoperability between the Ethereum and Polkadot ecosystems, uniting communities, and empowering web3 accessibility through a common Multichain vision. See the [LayerZero section](https://docs.astar.network/docs/build/zkEVM/integrations/bridges-relays/AstarEVM-zkEVM) to learn more about how to leverage the interoperability between Astar zkEVM and Astar Substrate on Polkadot * Established Tools and Libraries - Compatible with the tools web3 developers already know how to use, such as Remix, Hardhat, and Open Zeppelin. ### ⛓ Recommended Things for Builders * Find support during ETHSeoul or [Astar Discord](https://discord.gg/astarnetwork)! * Any integration guides can be found in [this documentation](https://docs.astar.network/docs/build/zkEVM/integrations/account-abstraction/) (ie. Account Abstraction) * [Astar zkEVM Faucet](https://docs.astar.network/docs/build/zkEVM/zkevm-faucet) \- This faucet is the official Sepolia ETH faucet for Astar zkEVM\. * [RPC Server Address](https://docs.astar.network/docs/build/zkEVM/quickstart#connecting-to-zkevm) for Astar zkEVM, recommended: [https://rpc.startale.com/zkatana](https://rpc.startale.com/zkatana) * Astar zkEVM scanner: [https://zkatana.explorer.startale.com/](https://zkatana.explorer.startale.com/) Leverage and use [NFT APIs](https://docs.astar.network/docs/build/zkEVM/integrations/nft-api/) from Rarible, BlueZ. ***disclaimer: The payout will be in ASTR Token calculated based on the average rate for the past 30 days of which the actual payout date (ETHSeoul Winner Announcement Date), as per coingecko.**

Special Prizes are awarded to the projects that are deemed worthy of additional prizes pertaining to the categories described in the prizes. **\*disclaimer: Please note that “special prizes” may not be distributed unless there is a project that follows the guideline provided below under the “Getting Started” section.**

Help an AI Overlord Establish Fair Governance Using NEAR Prize Amount: 10000 $USDT The NEAR AI Governance Challenge calls for visionaries at the intersection of AI and blockchain technology. This bounty invites participants to imagine an autonomous government operated by AI that epitomizes transparency and flexibility. Your task is to devise a system where AI, possibly through large language models (LLMs) or other advanced AI models, can receive feedback from its constituents within the NEAR ecosystem and, in response, formulate, adjust, or repeal governance rules. We seek innovative Web3 applications demonstrating how AI could interact with blockchain to perform governance functions. This might involve AI writing and deploying smart contracts autonomously or smart contracts designed to be triggered by AI to establish new regulations. Consider how these smart contracts could facilitate an AI overlord's receiving and processing feedback, ensuring that the resulting rules are fair and effective. Reflect on Korea’s unique governance challenges and opportunities and mold a system where technology and participatory governance converge. This will offer a fresh perspective on reimagining leadership and community engagement in the digital age. * You are free to incorporate any ECDSA-based blockchain(s) of your choice (Bitcoin, Cosmos chains, L1s/L2s EVM, etc.) **but must include at least one network that settles on Ethereum mainnet (e.g. ETH Mainnet, Optimism, Arbritrum)**. # Judging Criteria: * Team spirit and readiness to progress * UI/UX design quality * Technical excellence * Integration of LLMs and Smart Contracts with NEAR * Impact on Near's organization

Check out: [neopin.io](http://neopin.io) / [Twitter](https://twitter.com/neopinofficial) ## [English] ### Objective Develop NEOPIN wallet integrated dApps for Mass Adoption ### About NEOPIN is an AMM based Permissioned DeFi protocol running on EVM compatible networks built by the bright minds of Binance, [Crypto.com](http://crypto.com/), Gnosis and Neowiz. It's UAE under-regulated wallet and DeFi protocol provides an open platform that gives the pathway to safe and secure DeFi environment to builders who are looking to bridge the gap between TradiFi and DeFi worlds. ETH Seoul-NEOPIN track is an opportunity for Web3 builders to implement innovative ideas, code-crafting skills and contribute to the greater Ethereum community and its ecosystem. Team NEOPIN is looking forward to talented builders turning creative ideas into codes and smart contracts while utilizing the NEOPIN Wallet and its DeFi products. ### Reference - [NEOPIN Wallet Connect Docs](https://docs.neopin.io/developers/neopin-connect) ***disclaimer: All prizes will be payed in $NPT. The amount will be determined by the market price on coingecko at the date of the track judgement, March 31st** ## [한국어] ### 목표 NEOPIN Wallet Connect를 활용해서 매스어답션을 위한 디앱 개발하기 ### About 네오핀은 바이낸스, [크립토닷컴](http://crypto.com/), Gnosis, 네오위즈 출신으로 구성된 팀이 구축한 AMM 기반의 Permissioned DeFi 프로토콜입니다. UAE 규제당국의 가이드라인 아래에서 개발, 운영 중인 비수탁형 지갑이자 디파이 프로토콜로, 디파이와 전통금융 마켓 사이의 간극을 메우고자 하는 개발자들에게 안전하고 보안이 뛰어난 디파이 환경을 제공하는 개방형 플랫폼입니다. ETH Seoul-NEOPIN 트랙은 웹 3.0 빌더들이 혁신적인 아이디어와 기술을 코드로 구현하고, 더 나아가 이더리움 커뮤니티와 생태계에 기여할 수 있는 기회입니다. 팀 네오핀은 네오핀 월렛과 디파이 제품을 활용하는 동시에 창의적인 아이디어를 코드와 스마트 컨트랙트로 구현할 재능 있는 빌더들을 기다리고 있습니다. ### Reference - [NEOPIN Wallet Connect Docs](https://docs.neopin.io/developers/neopin-connect) ***유의: 모든 상금은 $NPT로 지급됩니다. 수량은 트랙 심사 당일인 3월 31일 coingecko에 표시된 시장 가격에 의해 정해집니다.**

Create a dApp with a use case that leverages at least one of the aforementioned Neon EVM features: - Utilising micro transactions (the more txs the better). - Utilising cheap transaction cost. - Utilising fast finality ( 1,2 seconds is the finality of NeonEVM). - Adapting an existing DeFi primitive to become a Neon-native dApp with some unique features. 1st place 2k$ 2nd place 1$k 3rd place 500$ Pool prize (for any project deploying a working dApp on NeonEVM devnet or mainnet): 1500$ Website for developers: https://neonevm.org/developers Twitter: https://twitter.com/Neon_EVM GitHub: https://github.com/neonevm/neon-evm Neon EVM Docs: https://docs.neonevm.org/docs/quick_start NeonScan: https://neonscan.org/ Neon Faucet: https://neonfaucet.org/

Mobile-first 🤳. EVM compatible 🧩. Carbon negative 🌱 . Celo is a blockchain built for the real world. Build dApps with a great user experience leveraging Celo's lightning fast transactions, low cost, and multi-currency gas fees.  🇰🇷 For ETHSeoul, Celo is excited to feature MiniPay and Valora. Build Consumer Crypto and Real World Use Cases for mobile users.  MiniPay is a mobile, stablecoin-based, non-custodial, payments focused wallet. With almost 2 million users, MiniPay is the fastest-growing consumer crypto wallet.  Valora is a mobile crypto wallet that enables you to discover a vast range of uses for your crypto. Valora recently launched native support of USDC on Celo.  ## Best Mobile App  * 1st Place, Best Mobile App  $2500  * 2nd Place Best Mobile App  $1500  * 3rd Place Best Mobile App   $1000 * Prizes will be paid in Ethereum USDC.  ## Requirements: \- Deploy your contracts on Celo Alfajores Testnet or Celo Mainnet  \- Demo your application on a mobile screen\. Browser applications are eligible if demoed as mobile applications\.  ## Resources: * [Build on MiniPay ](https://docs.celo.org/developer/build-on-minipay/overview#building-dapps-for-minipay-wallet) * [Build on Valora](https://docs.valora.xyz/) * [Use Celo Composer for fast application development](https://github.com/celo-org/celo-composer) * [Get testnet tokens](https://faucet.celo.org/alfajores)

# Overview Fhenix is an L2 on ETH that uses Fully Homomorphic Encryption (FHE) to provide confidentiality. For our track, we are looking for developers who are interested in building full-stack applications in the Fhenix ecosystem that use encrypted computation. This can be anything from on-chain poker, dark pools, confidential voting, etc. We’re open to ideas and look forward to seeing what you and your team come up with! # What is required to complete this prize? We require a full stack application demonstration, live hosting is preferred but not mandatory. However, creating an application that others can play around with from their own machines would be beneficial for the team's prospects of being selected. A Github repository with a history of commits is also required. In addition to a corresponding readme that makes it easy for developers, judges and our team to understand the overarching architecture of the project submission. # What does success look like? What are possible features that you are looking for? A successful submission will follow all of the requirements. We are looking for projects that have the potential to contribute something new and creating to the Fhenix ecosystem. This means that we would ideally like to see full stack applications that are ready to be hosted on a public domain and use encrypted computation. These projects should bring something new to the ecosystem, not specifically the field. # What is the impact on your organization by a team working on this bounty? We are looking for projects that we can feature in terms of our ecosystem growth. Potential for roll over bounties and grants are things that can be considered as well. Intertwining dev product submission into our larger ecosystem assets and point systems is something that we would like to explore. # What are the UI/UX Design Requirements For UI/UX requirements, the simpler and easier to understand the better. Ideally we would like developers to begin to think about ways that state of the art account abstraction advancements can be integrated into their projects as well. The only major technical requirement is successful integration of the fhenix.js library into the client side of the application submission. Ideally we would like to see a clean styling (in terms of design principals) that are specifically tailored to the individual contracts and applications. It would be great to exemplify how much easier it is to create more advancement encrypted states using fhe vs zk. # What are examples of use cases you are looking to solve? - On-chain Poker: (Gaming) leveraging FHE to preserve card privacy, then reveal and compare the cards at the end of the round. - Dark pool: (DeFi) Large trades can be encrypted to prevent market panic and MEV. Using FHE, encrypted price and amount can be matched between buyers and sellers. - Confidential betting: (DeFi) Users can place bets in an encrypted manner. FHE is used to encrypt the bet value, which will be revealed at the end of the round. - Confidential DAO: (DAO) Token or NFT holders can cast votes to proposals in a confidential manner. A few things can be confidential using FHE: token amount, voting choice, who to delegate votes to, etc. - Confidential survey: (Tool) On-chain survey: FHE can be used to encrypt answers or (ipfs url) so that only the survey creator can decrypt and see. - Real time predictions / oracle: (DeFi) Participants can contribute their predictions in an encrypted manner without seeing the answer of other participants. FHE allows for participants to submit encrypted values, and compute the average of the submissions in an encrypted and ongoing manner. - Confidential payment streaming: (Tool) Streamed payments can be confidential (sometimes it’s better to not know how much your colleagues are getting paid!). FHE can encrypt the multiplier and allow the recipient to withdraw the available amount based elapsed time. - Confidential DID: (Identity) Store your personal data on chain in an encrypted manner and allow other dApps to interact with them. A trusted entity can mint a soul bound NFT with, for example, the date of birth as encrypted metadata (in the form of time stamp). Then, a user can use the soul bound token as authentication to interact with a casino app (ex: 18+ requirement). The casino contract checks if the encrypted date of birth is > 18 years old (in the form of time stamp). - Confidential Treasury: (DAO) Treasuries can hide their token holdings (amount), and how much they want to delegate. FHE is applied to private ERC-20 tokens. - Confidential ERC-20: (Tool) The amount of tokens held by each address is private. FHE is used to encrypt the token amount, while still allowing for functions such as transfers, and allowances in a confidential manner. A wrapper contract can also be used to convert an existing public ERC-20 to private ERC-20. This can be a great solution for loyalty programs with privacy (ex: Starbucks points). - Confidential Metadata for NFTs: (NFT) Metadata of the NFT can be hidden from the public but viewable by the owner. FHE is used to encrypt the metadata, and allow for dynamic properties to be triggered in an encrypted manner. This concept can also be very interesting for new types of games where players' stats can be hidden. Lots of room for creativity here! - Confidential Key Recovery (Social): (Tool) Simple private key recovery mechanism with your friends. Confidential key is encrypted, added to a recovery contract, and a list of your friends’ addresses need to sign to allow a new address to recover (decrypt) the key. Your friends can pass the new address as a transaction input. - Confidential Data with Access Control: (Data) Users with different access control permissions (admin, manager, employee, etc.) can view on-chain states. This could be interesting to track performances, scores, accounting, etc. Access rules can be customized via explicit re-encryption. - Password 2FA: (Tool) Smart contract wallets can have a password 2FA. The password (encrypted) is stored on-chain. To execute a transaction, user needs to pass in a ciphertext of the password generated on the client side, which will be compared on-chain. - Minesweeper: (Gaming) The classic minesweeper game. The amount of adjacent mines to a square could be summed up in an encrypted manner without revealing their positions. - Rock Paper Scissors Extensions: (Gaming) Each player can choose a move then submit them in the form of ciphertext. The result is revealed once both players have submitted their move. This can be leveraged into general combat engines such as Pokemon. - Confidential Messaging: (Tool) Encrypted messages (although expensive) can be sent between addresses with specific decryption rules. - Confidential content gallery: (Tool) Encrypted content can be decrypted by subscribers. - Confidential key/ seed phrase backup: (Tool) Your private key can be stored on-chain in an encrypted manner, and decrypted by specific addresses or based on rules/conditions. - Confidential Machine Learning: (AI/ML) Confidential input model applications, as well as federated weighting obfuscation. # Resource Link - Website: https://www.fhenix.io/ - New Docs: https://fhenixprotocol.github.io/fhenix-docs/ - Getting Started: https://www.fhenix.io/getting-started/ - Cheat Sheet: https://www.fhenix.io/cheat-sheet/ - Use Cases: https://www.fhenix.io/use-cases/ - Discord: https://discord.com/invite/FuVgxrvJMY - Dev Rel Telegram @Corsola26

## **ETH Seoul** Scaffold-ETH 2 is an open-source toolkit that simplifies building dApps with features like contract hot reload, burner wallet, local faucet, and easy integration with wallet providers. It uses NextJS, RainbowKit, Hardhat, Foundry, Wagmi, and TypeScript.  We’re excited to see what you’ll build at the hackathon with Scaffold-ETH2 and we are giving out a total of 5,000 USD for the top 3 projects!  What We're Looking For: * Innovation: New hacks! Building new and fun experiments with Scaffold-ETH 2 * User Experience: Easy to use interface to help onboard the next billion to Ethereum.  * Utility and Impact: Dapps that not only showcase technical proficiency but also have the potential for significant impact. ## Resources: * [https://scaffoldeth.io/](https://scaffoldeth.io/)

## Injective [Website](https://injective.com/) / [Twitter](https://twitter.com/Injective_) ### ❓ About Injective is a blockchain built for finance. Injective is a lightning-fast interoperable layer one blockchain optimized for building the premier Web3 finance applications. Injective provides developers with robust plug-and-play modules such as a fully  decentralized orderbook, binary options, RWA module, and much more. It allows developers to build a diverse array of sophisticated applications. Injective is built with Cosmos SDK and is able to attain instant transaction finality using the Tendermint proof-of-stake consensus framework. In addition, Injective can facilitate fast cross-chain transactions across the largest layer one networks such as Ethereum and Cosmos Hub. ### Injective inEVM Bounty Program  Injective today is one of the fastest-growing blockchains in the space. The Injective Ecosystem is a decentralized application network that focuses on providing the best in class user experience. By offering the unrestricted and unprecedented ability to access decentralized financial markets, products, services, and toolings, the Injective Ecosystem empowers individuals with the ability to allocate capital more efficiently. To encourage builders at ETH Seoul, Injective Foundation is pleased to announce the Injective inEVM bounty program to incentivize developers building in the Injective Ecosystem. Projects that successfully integrate with inEVM into their submission will be eligible for a prize. inEVM is the first-ever Ethereum Virtual Machine capable of achieving true composability across Injective and Ethereum. The inEVM network was developed as a collaboration between Injective and Caldera. inEVM brings additional value to cross-chain dApps and allows applications to achieve true composability across multiple networks. It allows Ethereum developers to interact with the broader blockchain universe and to scale further. All dApps are welcome to participate! (If you need an idea to start: AMM protocols, lending platforms, DEXs, yield farming and liquidity mining, staking, DAOs, insurance protocols, asset management tools, derivatives and synthetics, tokenization platforms). ### Requirements: 1. All submissions need to deploy on the Injective testnet or Injective mainnet to be qualified 2. Submitted projects need to integrate with inEVM to be eligible  ### 👷 Builder Resources * Find us during ETHSeoul, or get support by joining the builder chat in the [Injective Discord](https://discord.com/invite/injective)! * General Injective docs: [https://docs.injective.network/](https://docs.injective.network/)  * inEVM docs: [https://docs.inevm.com/](https://docs.inevm.com/)  * inEVM resources (chain ID, faucet, explorer): [https://inevm.caldera.dev/](https://inevm.caldera.dev/) * API docs: [https://api.injective.exchange/#introduction](https://api.injective.exchange/#introduction) * Github: [https://github.com/InjectiveLabs](https://github.com/InjectiveLabs) Where to start You can build anything you can imagine on Injective. Trading, prediction markets, lending, interest rate swaps, portfolio dashboards, and Social Fi, are just some of the possibilities on Injective. Injective provides an unmatched infrastructure stack for building Web3 finance applications. You will uniquely have access to Injective’s plug-and-play modules, such as the world’s first on-chain derivatives orderbook, binary options, and more. Using these modules, you can rapidly deploy advanced applications in over 90% less dev hours. Injective also brings a shared liquidity layer to applications, which means your dApp can leverage  institutional grade liquidity from day one for a legion of use cases. Visit [https://injective.com/ecosystem](https://injective.com/ecosystem) to discover live projects built on Injective under the Featured dApps section. Current dApps range from orderbook DEXs, AMM, Yield farming, options, lending, LSD Fi, NFT Fi, Game Fi, and more. ### 💸 Prizes The Injective Foundation will be awarding the following prizes to the top three teams that successfully integrate with inEVM into their project, based on judging by the Foundation: 🥇The best project will be awarded $2500 in USDT 🥈The second best project will be awarded $1500 in USDT 🥉The third best project will be awarded $1000 in USDT 

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