{"schema":"BUIDL","d":{"id":17739,"members":[],"pictures":["https://cdn.dorahacks.io/static/files/192a551424aa0f16d94dc98494b9a819.png"],"roundProjects":[],"hackathonProjects":[{"id":19297,"hackathon":{"id":653,"tabSet":[{"id":1165,"name":"Submission Guide","slug":"submission","description":"# Tutorial Video\n\n![YouTube](https://youtu.be/yWhQPzxptg0)\n\n# **Getting Started [3-5 MIN]**\n\n**1.** **Submit your BUIDL via [DoraHacks.io](https://dorahacks.io/). You need an account with DoraHacks before you can submit.**\n\nUse the **Log in** button in the upper right corner of the page to access the sign-up options.\n\n

\n\nYou can create your account with either your **GitHub account, Google account, crypto wallet** or **email address**. We recommend connecting your account to GitHub to share your projects with a wider audience.\n\n*If asked for a verification code via email, the email may take a few minutes to arrive. The code expires 10 minutes after you click “**send code**”.\n\n**2.** **Before the submission deadline, make sure you have added your Github link to the project. You can submit the project first, and continue editing until the deadline.**\n\nClick “**Submit BUIDL**”.\n\n

\n\n\n> **→ Already have a BUIDL on DoraHacks?**\n> \n\n1. Click “**Use existing BUIDL**” and select your BUIDL project.\n2. Choose the track you want to enter. \n3. Answer the questions set by the organizer in the input field if applicable.\n\n

\n\n\n> **→ Submitting a new BUIDL?**\n> \n> Click **“Create new BUIDL”** and fill out the form with your project details.\n\n

\n\nBe sure to include **URLs (with http/https://)** for your demo, demo link, and social media.\n\n

\n\n

\n\nOnce you’ve completed the new BUIDL setup, select the relevant track, and click **“Submit for review”**.\n\n

\n\nAfter submitting successfully, you'll see this notification.\n\n

\n\n# **Manage BUIDL submission**\n\nAfter submitting your application, the \"Submit\" button will update to \"Manage Submission\". Click the button to manage your BUIDL's Track/Bounty submission.\n\n

\n\n# **Project Approval**\n\nAfter submission, your project needs to be approved by the Hackathon Organizer before it becomes publicly visible in the Hackathon [BUIDLs gallery](https://dorahacks.io/hackathon/653/buidl).\n\n

\n\n# **Getting Support**\n\nIf you have any questions for the hackathon organizers, feel free to contact them via their dedicated Telegram, Discord, or Slack communication channel. You can also click the \"**Message**\" button next to the organizer's logo to DM them on DoraHacks.\n\n# **Want to Update Your BUIDL?**\n\nHead to your Account Center by clicking **[Avatar] -> [Profile]**. Find your project and hit the **Edit** button on its detail page to make changes.\n\n

\n\n

"}],"skills":null,"applied":false,"isCurrentHackerRegistered":false,"buidlsCount":9,"applicationsCount":9,"organization":{"id":2779,"name":"ETHKyiv","logo":"https://cdn.dorahacks.io/static/files/192a0bfb1065bb71663e30b474c95703.png"},"description":"# Що взяти з собою\n\n- **Ноутбук:** Ви будете працювати над проєктом, тому без ноутбука ніяк.\n- **Зарядні пристрої:** Не забудьте зарядки для ноутбука та гаджетів.\n- **Гарний настрій та енергію:** Позитивний настрій — ключ до чудової атмосфери та продуктивності!\n\n# Що потрібно знати\n\n- Мова воркшопу — **англійська**. Базове знання англійської вам точно знадобиться, особливо для активної участі у воркшопі та взаємодії з іншими учасниками.\n- **Це хакатон, а не конференція**. Готуйтеся до коротких виступів і багато часу для роботи над вашими проєктами!\n\n# Розклад події\n\n- 08:30 — Реєстрація, легкий сніданок (чай, кава, круасани, печиво)\n\n- 09:00 — Відкриття + виступ секретного гостя (ми рекомендуємо прийти, щоб не шкодувати!)\n\n- 10:00 — Воркшоп від Atrium University: Uniswap V4 Hooks\n\n- 11:30 - 12:00 — Знайомство та формування команд (максимум 5 людей у команді)\n\n- 12:00 - 19:00 — Робота над проєктом\n\n- 13:00 — Обід\n\n- 19:00 — Вечеря\n\n- 20:00 — Оголошення переможців та нагородження\n\n# Призовий фонд\n\n- Призовий фонд складає 2000 доларів, який буде розподілений між найкращими проєктами. Ми не обмежуємо кількість переможців, оскільки хочемо відзначити всі якісні проєкти! Подача проєктів має бути завершена до 19:00, після чого судді оцінять проєкти.\n\n# Що потрібно знати для участі\n\n- Щоб успішно взяти участь у цьому хакатоні, важливо мати хоча б базові знання Solidity. Ми будемо працювати з Uniswap V4 Hooks – це складна, але дуже цікава тема, яка вимагає знань про Ethereum, Solidity та смарт-контракти. Якщо ви вже працювали з цими технологіями або маєте базове розуміння, це вам сильно допоможе! Але навіть якщо ні, не переймайтеся, базовим речам по роботі з Uniswap V4 ми вас навчимо.\n\n# Якщо ви не розробник\n\n- **Маркетологи:** Ви можете приєднатись до команди та допомогти створити круті тексти про проєкт або написати статтю про Uniswap V4 Hooks.\n\n- **Дизайнери:** Вас чекають! Гарних дизайнерів завжди не вистачає, особливо у web3. Якщо ви дизайнер, сміливо шукайте собі команду – вас «заберуть з руками і ногами»!\n\n- **Студенти та новачки:** Навіть якщо ви новачок, ваша підтримка, бажання вчитися та мотивація — це надзвичайно важливо! Не бійтеся ставити запитання та робити помилки. Ви тут, щоб розвиватися — і це вже великий крок уперед. Спробуйте знайти собі команду та бути корисним.\n\n# Додаткова інформація\n\n- Снеки та напої будуть доступні на локації протягом усього дня.\n\n- Якщо у вас ще немає команди, ви можете знайти її на локації або через наш Discord-канал: https://discord.gg/veN5qWPj.\n\n- Підписуйтесь на наші соцмережі, щоб залишатись в курсі всіх оновлень і подій!\n\n- Ми з нетерпінням чекаємо на вас і впевнені, що це буде день, повний інновацій, натхнення та співпраці!","onboardingCompleted":false,"registerFormUrl":null,"preRegisterTime":0,"publicContactHackerHandle":"ihorethkyiv","hackersCount":20,"winnerAnnounced":true,"teamCount":0,"title":"ETHKyiv Impulse: Uniswap V4 Hooks Edition","uname":"ethkyivimpulse","imageUrl":"https://cdn.dorahacks.io/static/files/192a0ccd88159cf5340d72648eb874eb.jpg","originUrl":null,"startTime":1729315800,"endTime":1729353600,"timezone":"-180","city":null,"visible":true,"approvalStatus":6,"state":0,"voteUrl":null,"voteMechanism":null,"bonusPrice":2000,"bonusMechanism":null,"followersCount":0,"ecosystem":"Ethereum","applyGuide":null,"weight":0,"participationForm":"IRL","field":"Blockchain,Ethereum,Uniswap","email":"ihor@ethkyiv.com","contacts":"Email,ihor@ethkyiv.com","externalContacts":null,"telegram":null,"discord":null,"whatsapp":null,"wechat":null,"prizeFundingEscrowed":0,"token":"USD","prizeSafeForm":0,"prizeSafeNetwork":null,"prizeSafeOwner":null,"prizeSafeWallet":null,"prizeSafePublishDate":null,"hasOnboarding":false,"isPublicTrackJudging":false,"isEndedTrackJudging":true,"question":null,"countryId":227,"cityId":1804382913,"venueName":"Sigma Software, Kyiv Office","venueAddress":"BC Astarta, Yaroslavska St, 58, Kyiv, 04071","category":1,"isEnableBounty":true,"isBountyRequired":false,"isEndedBountyJudging":false,"bountiesLimitForBuidl":10,"isPublicBountyJudging":false,"isMultiTracksAllowed":false,"tracksLimitForBuidl":0,"showIdeaTab":true,"showQuestionTab":true,"showTeamTab":false,"bonusDescription":[],"askHackers":[],"isEnabledQuestions":false,"isEnabledAskHackers":false,"isBuidlsPrivate":false,"trackJudgingMaxScore":100,"bountyJudgingMaxScore":100,"isExtended":false,"oldEndTime":null,"status":2},"status":4,"bounty":null,"track":null,"table":"0","trackObj":{"id":1684,"name":"All BUIDLs","judgingCriteria":"","weight":1},"bountyObjs":[]}],"chain":[],"chainList":[],"appliedGrant":false,"acceptRewards":false,"owner":176638,"ownerInfo":{"nickname":"Demian","username":"OleksandrDemian","avatar":"https://cdn.dorahacks.io/static/files/192a442e59da8fd41ee92984ac1a8d7f.jpeg"},"visible":true,"deleted":false,"continuousSponsoring":false,"pageView":0,"sponsoredCount":0,"starCount":0,"sponsoredAmount":"0.00","sponsoredPersons":0,"followers":0,"voteCount":0,"projectMembers":[],"bnbRound":null,"doraGrantDaoTags":[],"techTrees":[0],"infrastructureTags":[71],"otherInfrastructures":[],"lastEditor":{"id":176638,"username":"OleksandrDemian","date":1732434830000},"upvoted":false,"followed":false,"upvoters":{"count":0,"list":[]},"kycStatus":0,"ideas":[],"name":"AntiSandwichHook","techniqueField":"","source":"-","vision":"A hook to protect against sandwich attacks. Its main goal is to prevent attacks by analyzing transactions and charging additional fees if the transaction looks suspicious.","projectDescription":"# AntiSandwichHook - Protection Against Sandwich Attacks in Uniswap V4\n\n**AntiSandwichHook** is a smart contract solution designed to prevent sandwich attacks in Uniswap V4 pools. A sandwich attack occurs when a malicious actor (usually an MEV bot) manipulates the price of a token by placing transactions before and after a target swap, exploiting price slippage to extract profit. This project introduces a custom Uniswap V4 hook that monitors pool state changes and dynamically adjusts fees to mitigate the effects of sandwich attacks.\n\n# How It Works\n1. **Before Swap**: The hook captures the current pool state (liquidity, price, and fees) and stores a checkpoint.\n2. **After Swap**: After the swap, the hook checks whether the balance changes indicate a sandwich attack by comparing the final pool state with the checkpoint.\n3. **Dynamic Fee Adjustment**: If an attack is detected, the hook can dynamically adjust commissions and redistribute funds to the pool to mitigate the effects of the attack.\n\n# Key Features\n- **Dynamic Price Protection**: The hook detects sandwich attacks by analyzing balance deltas before and after swaps. It applies protective measures such as dynamic fees or other restrictions to block malicious behavior.\n\n- **Flexible Integration**: The hook integrates seamlessly with Uniswap V4, leveraging its modular hook architecture to provide protection without affecting other core functionalities.\n\n- **Comprehensive Testing**: The project includes a suite of tests that simulate both successful and failed sandwich attacks, ensuring that the hook functions as expected under various scenarios.\n\n- **Prevents MEV Bots**: By reducing the profitability of sandwich attacks, this solution disincentivizes MEV (Maximal Extractable Value) bots from targeting the pool.\n\n**AntiSandwichHook** provides an essential layer of defense for decentralized finance applications built on Uniswap V4, reducing the impact of sandwich attacks and protecting both users and liquidity providers from malicious front-running and back-running strategies. By incorporating this hook, DeFi protocols can maintain fair and secure trading environments.","teamDescription":"Crypto-enthusiast, blockchain facilitator","githubPage":"https://github.com/AleksDemian/AntiSandwichHook","githubVerify":0,"demoLink":null,"demoVideo":null,"ownerTitle":null,"ownerIntroduction":null,"twitterVerified":false,"weibo":null,"nft":null,"scOwner":"","editTime":1732434830,"upvotes":"0.00","isRecruitingEnabled":false,"recruitingInfo":"","recruitingLink":null,"twitter":null,"facebook":null,"instagram":null,"socialTelegram":null,"socialDiscord":null,"socialLinks":["https://t.me/SanimeVel","https://www.linkedin.com/in/alexandr-demian/"],"showedFunding":false,"agentStatus":null,"createdAt":"2024-10-19T23:34:17.904656+08:00","updatedAt":"2024-10-20T00:32:57.483448+08:00","milestoneEditor":null,"path":"/buidl/17739","techField":"","techFieldAry":[],"techTree":[0],"tags":[71],"otherTags":[],"origin":"-","intro":"# AntiSandwichHook - Protection Against Sandwich Attacks in Uniswap V4\n\n**AntiSandwichHook** is a smart contract solution designed to prevent sandwich attacks in Uniswap V4 pools. A sandwich attack occurs when a malicious actor (usually an MEV bot) manipulates the price of a token by placing transactions before and after a target swap, exploiting price slippage to extract profit. This project introduces a custom Uniswap V4 hook that monitors pool state changes and dynamically adjusts fees to mitigate the effects of sandwich attacks.\n\n# How It Works\n1. **Before Swap**: The hook captures the current pool state (liquidity, price, and fees) and stores a checkpoint.\n2. **After Swap**: After the swap, the hook checks whether the balance changes indicate a sandwich attack by comparing the final pool state with the checkpoint.\n3. **Dynamic Fee Adjustment**: If an attack is detected, the hook can dynamically adjust commissions and redistribute funds to the pool to mitigate the effects of the attack.\n\n# Key Features\n- **Dynamic Price Protection**: The hook detects sandwich attacks by analyzing balance deltas before and after swaps. It applies protective measures such as dynamic fees or other restrictions to block malicious behavior.\n\n- **Flexible Integration**: The hook integrates seamlessly with Uniswap V4, leveraging its modular hook architecture to provide protection without affecting other core functionalities.\n\n- **Comprehensive Testing**: The project includes a suite of tests that simulate both successful and failed sandwich attacks, ensuring that the hook functions as expected under various scenarios.\n\n- **Prevents MEV Bots**: By reducing the profitability of sandwich attacks, this solution disincentivizes MEV (Maximal Extractable Value) bots from targeting the pool.\n\n**AntiSandwichHook** provides an essential layer of defense for decentralized finance applications built on Uniswap V4, reducing the impact of sandwich attacks and protecting both users and liquidity providers from malicious front-running and back-running strategies. By incorporating this hook, DeFi protocols can maintain fair and secure trading environments.","images":["https://cdn.dorahacks.io/static/files/192a551424aa0f16d94dc98494b9a819.png"],"team":"Crypto-enthusiast, blockchain facilitator","github":"https://github.com/AleksDemian/AntiSandwichHook","demo":null,"video":null,"socialTwitter":null,"socialFacebook":null,"socialInstagram":null,"nftId":null,"haxonBuidls":[{"id":19297,"projectId":17739,"name":"AntiSandwichHook","track":"All BUIDLs","bounties":[],"haxonId":653,"haxonName":"ETHKyiv Impulse: Uniswap V4 Hooks Edition","status":2,"haxonCreateAt":"2024/10/19 05:30:00 UTC"}],"kudoData":null,"bountyObjs":[],"tracks":[],"badges":["{\"schema\":\"BADGE\",\"d\":{\"index\":\"b15264\",\"badgeType\":\"buidl\",\"path\":\"/buidl/17739/achievement/b15264\",\"ownerId\":17739,\"iconName\":\"b0\",\"updatedDate\":\"2024/10/19\",\"title\":\"ETHKyiv Impulse: Uniswap V4 Hooks Edition\",\"detail\":\"Participation\",\"tag\":\"Hackathon\",\"imageUrl\":\"https://cdn.dorahacks.io/static/badge/b0_ETHKyiv~c32Impulse:~c32Uniswap~c32V4~c32Hooks~c32Edition.webp\",\"shareImageUrl\":\"https://cdn.dorahacks.io/static/badge/b0_ETHKyiv~c32Impulse:~c32Uniswap~c32V4~c32Hooks~c32Edition.jpg\",\"id\":15264,\"metaInfo\":{\"type\":\"HACKATHON_PARTICIPATION\",\"hackathonId\":653,\"title\":\"ETHKyiv Impulse: Uniswap V4 Hooks Edition\"},\"createdAt\":1729353219,\"updatedAt\":1729353219,\"type\":0,\"subjectId\":653,\"metadata\":{},\"buidl\":17739}}"]}}