{"schema":"BUIDL","d":{"id":10319,"members":[],"pictures":["https://cdn.dorahacks.io/static/files/18dc19e5676d3c8e4bb39504bc8afb40.png"],"roundProjects":[],"hackathonProjects":[{"id":11016,"hackathon":{"id":297,"tabSet":[{"id":538,"name":"Prizes","slug":"prizes","description":"In the upcoming \"Building Smart and Fully On-Chain Applications\" hackathon, participants can compete for a substantial **$60,000** prize pool from BNB Chain challenge tracks and **$130,000** prize pool from our annual sponsors challenge tracks. Additionally, there's the opportunity to win Kickstart program packages totaling **$300,000** in value.\n\n![IMAGE 2024-01-16 14:31:39.jpg](https://cdn.dorahacks.io/static/files/18d10f82d2f2cd6215285ab47caabc9a.jpg)\n\nSupport and Opportunities Beyond the Hackathon\nThe excitement goes beyond just the prizes. After the hackathon, winners will receive support from BNB Chain for up to one month. A specialized team will assist with technical details, helping ensure the successful deployment and launch of your project.\n\nThe competition winners will not only receive recognition for their achievements but will also be granted a comprehensive Kickstart program package valued at $50,000. This exclusive package comprises credits from, but not limited to, AWS, Google Cloud, and many other helpful services and tools for development.\n\nAdditionally, winners potentially may have the opportunity for a direct interview with MVB, enhancing their chances of joining this esteemed community."},{"id":539,"name":"BNB Chain Challenge Tracks","slug":"bnb-chain-challenge-tracks","description":"These hackathon tracks were chosen because they are important areas in the Web3 space, especially for their potential in 2024. This highlights their role as key trends shaping the industry's future. \n\nChoose your path, or better yet, explore them all! The hackathon features six dynamic tracks, each presenting unique challenges:\n\n**AI Track**\nChallenge 1: AI Generative Content Ledger\n\n**Infrastructure Track**\nChallenge 2: Empowering opBNB with Advanced Analytics Support\n\n**Gaming Track**\nChallenge 3: opBNB On-chain Game\n\n**DePIN Track** \nChallenge 4: Decentralised Physical Infrastructure Networks with BNB Chain \n\n**DeSoc Track**\nChallenge 5: Decentralized Social Network\n\n**DeSci Track**\nChallenge 6: Decentralized Science\n\nFor more information on each challenge track, please refer to our guide [here](https://www.bnbchain.org/en/blog/bnb-chain-hackathon-challenge-tracks?ref=bnbchain.ghost.io).\n\nBesides the main challenges, extra tracks sponsored by our hackathon partners will also be available. These additional themes provide a broader scope for creativity and innovation across various topics. Stay tuned for more details coming soon.\n\nWe express our sincere gratitude to our hackathon sponsors: Polyhedra Network, Dora Factory, DEGO Finance, TUSD, and THENA."},{"id":540,"name":"Sponsors Challenge Track","slug":"sponsors-challenge-track","description":"We express our sincere gratitude to our hackathon sponsors for 2024: **Polyhedra Network, Dora Factory, DEGO Finance, TUSD, THENA**, and **Sonorus**. \n\n# **Dora Factory**\n\n**Awards: $5,000 in total**\n\n**Bounty 1:** Create a MACI round for your community or company\n\n**Prize**：$250 per winner\n\nCreate a MACI (Minimal Anti-Collusion Infrastructure) voting round on Dora Vota for decentralized governance within your community / organization. Dora Vota provides tools to create and manage a MACI voting round, which provides privacy and collusion resistance for voting and community governance. Read Dora Vota operator docs (https://docs.dorafactory.org/docs/vota) to get familiar with MACI and how to use it on Dora Vota.\n\nTo take on this bounty, you first need to think about an actual dGov use case within your community or organization, deploy it via Dora Vota, then engage your community to vote in the MACI round. If you could find a real use case and create a MACI round for it, we will provide a $200 prize + gas station reimbursement for users during voting.\n\nIf you are an individual hacker, you can also design a good MACI use case, and if the use case is new and valid, we will provide a $50 prize for your idea.\n\n**Bounty 2:** Establish or Design a BNBChain-IBC Channel \n\n**Prize**：$2500\n\n**Reward Settings**:\n- 20,000 DORA[$2,000+] - MVP made for a BNBChain-IBC Channel. \n- 5,000 DORA[$500+] - A feasible design for establishing a BNBChain-IBC Channel.\n\n**Challenge Description**:\nTo make BNBChain more accessible for the crypto-native generation, we would like to invite the brightest minds to build or design a BNBChain-IBC channel based on the IBC Protocol. \n\nThe Inter-Blockchain Communication Protocol (IBC) is an open-source protocol to handle authentication and transport of data between blockchains. [Explore IBC docs here](https://ibc.cosmos.network/main). \n\nWe would like you to design a light client on BNBChain that could support IBC transfers between post-fusion BNBChain and CosmosSDK chains via standard IBC relayers. DoraHacks has previously funded public goods such as Tiny Dancer which is doing similar things on Solana. To take on this bounty, you can either make an implementable design or create an MVP to enable IBC transfer between Dora Vota and BNBChain. \n\nIf you need any tech support or want to talk about more details regarding this bounty with Dora Factory, please contact us via Telegram @dorahacksofficial or write to our email operation@dorahacks.com.\n\n# **Dego.Finance**\n\n**Name**: The Next Popular Asset Protocol for BNB Chain\n\n**Awards**：$100,000 total in $DEGO tokens\n\n**Main Objectives/Goals**: \n1. To identify the upcoming asset protocol for BNB Chain, like NFT and Inscriptions.\n2. To find the best solution to utilise the existing large base of assets on the BNB Chain.\n\n**Challenge Description**:\nThis challenge aims to explore emerging asset classes and the protocols behind them, with the goal of identifying the next asset class that could drive mass adoption among users.\nOn the first objective, Ethereum experienced significant growth with the introduction of ERC20 tokens and subsequent success with ERC721 and ERC1155. BNB Chain has followed a similar trajectory but offers a more inclusive, faster, and cost-effective experience for users. For a leading Layer 1 hosting most web3 traffic, what is the next original Asset Protocol that can attract a new generation of unique and native users to the BNB Chain?\nOn the second objective, while embarking on identifying the next Asset Protocols, users are sitting on a large base of assets issued along the history of BNB Chain. Original assets like BNB and USDC are adopted the most, while some becoming redundant over time. With the surge of L2s, assets like ARB, Matic and BTCB are at their primetime on BNB chain too. How to activate the old and utilise the prime?\n\n**Submission Requirements**:\nGitHub link (including documentation, code, deployment status, and product URL)\n\n**Reward Settings**：\nTo address this situation, Dego.Finance will grant a $2,000 token bounty for deploying applications onto Testnet, and the top three solutions will receive a $15,000 token bounty for their exceptional features. Applications that continue development and launch frontends and commit to mainnet deployment will be considered for a $20,000 token grant.\nTeams interested in participating are encouraged to contact contact@dego.finance to discuss more tailored grants, feedback, and support.\n\n# **THENA**\n\n**Name**: Unlocking the Power of Plugins with THENA, Gamma Strategies, and Algebra. \n\n**Prize**：$20,000\n\n**Reward Settings**: Up to 5 winners.\n\n**Main Objectives/Goals**:\n- Foster innovation in DeFi through the development of plugins for THENA's concentrated liquidity AMM\n- Encourage the creation of plugins that can introduce new DeFi strategies and mechanisms\n- Expand the functionalities of THENA within the BNB Chain ecosystem\n\n**Challenge Description**:\nThis challenge is centered around one of the most exciting frontiers in decentralized finance: the development of flexible and powerful Plugins for THENA's concentrated liquidity AMM on the BNB Chain, akin to Uniswap V4's Hooks. The main goal is to harness the creativity and technical skills of developers to enhance THENA's ecosystem with innovative financial tools and operations.\n\nParticipants are tasked with designing and coding Hooks that can seamlessly integrate with THENA, contributing to a more robust and versatile AMM platform. These Hooks could range from simple features like automated portfolio rebalancing to more complex financial instruments that could redefine liquidity management and trading strategies on the DEX.\n\nThe primary objective is to create Hooks that are not only functional but also user-friendly, secure, and efficient, thereby enabling THENA to cater to a broader audience while offering sophisticated solutions to the current participants.\n[**Learn More**](https://medium.com/@ThenaFi/bnb-chain-innovation-hackathon-diving-deeper-into-algebra-integral-and-plugins-e7e33c35c47e)\n\n**Project Submission Criteria**:\n- Demonstrable integration with THENA's AMM infrastructure\n- Originality and innovation in the proposed Hook\n- Practicality and potential for real-world implementation\n- Quality of code and adherence to best practices in smart contract development\n- Documentation and ease-of-use for end-users\n\n**Rewards**:\nThe most innovative and impactful Hooks will be rewarded, including potential integration into the THENA DEX ecosystem. Winners will also receive exposure within the BNB chain community, and the chance to work alongside the THENA development team to refine and deploy their creations.\n\nJoin us in pushing the boundaries of DeFi and contribute to the future of trading on the BNB chain with THENA, Gamma Strategies, and Algebra.\n\n# **Polyhedra**\n**Name**: zkBridge for opBNB and BSC\n\n**Prize**：$5,000\n\n**Reward Settings**: 1st place winner: $3000, 2nd place winner: $1500, 3rd place winner: $500\n\n**Main Goal**: \n- Computation on opBNB \n- Cross chain the final result to BSC\n\n**Description**:\nComputation on the L1 Blockchain is excessively costly. opBNB provides a much more cost-effective platform for conducting such computations. Your objective is to delegate the computation from BSC to opBNB and then transfer the final result back to BSC via the Polyhedra Bridge.\nIt's worth noting that you can assume the client will request this computation every 10 seconds, offering the opportunity to batch transfer computation results to further reduce the cost.\n\nDocumentation:\n[HOW TO CROSS CHAIN (github.com)\n](https://gist.github.com/niconiconi/1091cd6aeda59cd768ec95d0bb7e0e8a)\nExpected submission:\nA proof of concept code that is working on opBNB and BSC.\n\n# Sonorus\n**Name**: Sonorus Social Tokenization Challenge\n\n**Description**: This challenges invites innovators to redefine the content landscape by tokenizing various forms of digital content, including music, art, videos, social media posts, and profiles. The challenge uniquely extends tokenization to social interactions, like likes and comments, propelling on-chain social interactions into a decentralized era. This transformative approach aims to grant users true ownership and control over their digital content and interactions.\n\n**Main Objectives/Goals**:\n1. Innovation in Asset Protocol Development: Encourage the creation of asset protocols that support diverse digital content tokenization.\n2. Ownership and Control: Empower users with real ownership and autonomy over their digital content and social interactions.\n\n**Judging Criteria**:\n- Innovation and originality of the proposed solution.\n- Practicality and feasibility of implementation.\n- User experience and engagement potential.\n\n**Prizes**:\n\n- Unordered list item First Prize: $2,000 in $SNS tokens. Awarded to the entry that best meets the challenge criteria, showcasing exceptional innovation, feasibility, and potential for user engagement.\n- Unordered list item Second Prize: $500 in $SNS tokens. Given to the runner-up entry that demonstrates significant innovation and alignment with the challenge goals but falls just short of the top spot.\n\n# **Sponsors Intro**\n\n**Polyhedra Network** is at the forefront of building Web3 interoperability infrastructure through efficient zero-knowledge proof protocols. Their innovative zkBridge facilitates trustless and efficient cross-chain infrastructures, contributing to layer-1 and layer-2 interoperability.\n\n**Dora Factory** specializes in developing protocols and technology stacks for decentralized governance. Their solutions, including the Public Good Staking infrastructure and Dora Vota blockchain, empower open-source communities and decentralized organizations by enhancing governance processes and facilitating voting. \n\n**DEGO Finance** stands as a leading incubator within the Web3 domain. Their commitment extends to nurturing various projects across the BTC ecosystem, with notable ventures like Depin, Desci, and GameFi. Collaborative efforts with partners are a cornerstone of DEGO Finance's mission, aiming to drive innovation in the space.\n\n**TrueUSD** is the first USD-pegged stablecoin to implement real-time attestations for its underlying reserves by independent third-party institutions. This commitment to transparency and reliability sets TrueUSD apart in the stablecoin landscape.\n\n**THENA** is a community-driven decentralized exchange powered by a self-optimizing ve(3,3) model, offering intuitive trading on various assets with and without leverage on BNB Chain and opBNB, maximizing revenue and rewarding token holders.\n\n**Sonorus** is reshaping the music landscape with TrendFi. Creating a space where music lovers don't just enjoy music—they vote on it, influencing its popularity, and earning rewards in the process. Crafting a future where music charts reflect genuine fan choices & interaction and where being part of the music's success journey is both influential and rewarding for the community."},{"id":567,"name":"Submission Guide","slug":"submission","description":"# Getting Started [3-5 MIN]\n\n**1.** **You should submit your BUIDL via [DoraHacks.io](https://dorahacks.io/). Before that, make sure that you already have an account.**\n\nUse the **Sign in/up button** at the upper right corner of the page to access the sign-up options.\n\n

\n\n**Github, crypto wallet** and **email** are supported for creating an account. For BUIDLers, we recommend you to connect the account to your **github** to make more people know what you are building at any time.\n\n*You may be asked to receive a verification code via email. The email may take some time to arrive. No worries! The code will not expire in 10 minutes when you click “send code”.\n\n**2. Before the submission of deadline, please make sure you have added your Github link to the project. You can submit the project first, edit it later before the deadline.**\n\nClick “ Register As Hacker”-“Submit BUIDL”.\n\n

\n\n> **→ If you already have a BUIDL on DoraHacks**\n\nChoose your BUIDL project from **\"Apply with Existing BUIDL\"** and identify the Bounties you want to join.\n\n> **→ If you want to submit a new BUIDL project**\n\nClick **“Create a new BUIDL”** and fill in the form as required. You'll be directed to \"Apply for BNBChain Hackathon: Building Smart and Fully-On-Chain Applications\" page after the new BUIDL setup.\n\nFill in the form to offer the information about your project. Note that for demo, demo link and social media, please offer **URLs (with http/https://)**.\n\n

\n\nDon't forget to check \"I agree to the User Agreement\".\n\n

\n\nBack to Application window. Choose your BUIDL project from **\"Apply with Existing BUIDL\"** and identify the Bounties you want to join.\n\nWhen submission succeeds, you'll see this notification.\n\n

\n\n# Project Verification\n\nWait! Don't just leave your BUIDL here and forget about it. Please contact DoraHacks staff on **Telegram** [@dorahacksofficial](https://t.me/dorahacksofficial) for project verification and promotional support. We'll make every BUIDL a poster and arrange a live project demo session for you via Youtube Live/Binance Live. Don't let go of the chance to receive huge visibility!\n\nOr, you can also reach us out at the **#buidl-verification channel** in the **Discord** https://discord.gg/gKT5DsWwQ5\n\n# Want to make some changes to your BUIDL?\n\nClick [Avatar] -> [Profile] to enter the Account Center, and click the \"Edit\" button on the top right of the BUIDL to update the BUIDL information.\n\n

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"},{"id":609,"name":"Results","slug":"results","description":"# Top 12 Projects from BNB Chain 2024 Q1 Hackathon\n\nThe top 12 projects from \"Building Smart and Fully-On-Chain Applications,\" the inaugural event of BNBChain's annual hackathon series, have been unveiled! We're thrilled to witness that 178 developer teams from across the globe participated in the hackathon, creating applications across various fields such as AI, Gaming, Infrastructure, DePIN, DeSci, and DeDoc using BNB Chain. It's truly exciting! Without further delay, let's explore these projects together!\n\n[BUIDL](https://dorahacks.io/buidl/10606)\n\nBUIDL link: https://dorahacks.io/buidl/10606\n\nAI-Social on BNB Chain empowers everyone to unleash their creativity and connect like never before. With AI by your side, every click, every chat, and every share is a step towards something brilliantly new.\n\n\n[BUIDL](https://dorahacks.io/buidl/10396)\n\nBUIDL link: https://dorahacks.io/buidl/10396\n\nAICell seamlessly integrates AI agent and web3, establishing a decentralized AI agent network that operates without permission. It leverages the web3 mechanism to establish a novel system of Ai finance (AiFi).\n\n\n[BUIDL](https://dorahacks.io/buidl/10475)\n\nBUIDL link: https://dorahacks.io/buidl/10475\n\nDePIN Raspi Connect leverages the power of Raspberry Pi's GPIO pins to control home devices while integrating blockchain technology for enhanced security and trust among connected devices. The project includes a smart contract system that stores devices and updates pin statuses with access control by the device owner. When authorized users update device pin statuses, the contract emits events with the respective device id, pin number and status. A Python based listener then detects these events and updates the Raspberry Pi device pins accordingly, simulating device control in a secure and decentralized manner.\n\n[BUIDL](https://dorahacks.io/buidl/10588)\n\nBUIDL link: https://dorahacks.io/buidl/10588\n\nDevCoin is a lightweight distributed social network where software developers can monetize their work, remix others work or rate work. Developers can monetize anything from a smart-contracts, libraries to full projects. Developers also get paid a portion if their work is sold as part of another project. All payments are handled in the new DEV token or DevCoin.\n\n\n[BUIDL](https://dorahacks.io/buidl/1188)\n\nBUIDL link: https://dorahacks.io/buidl/1188\n\nA decentralized gamefi intelligent tools platform, training AI and building for games\n\n\n[BUIDL](https://dorahacks.io/buidl/10319)\n\nBUIDL link: https://dorahacks.io/buidl/10319\n\nGreenfield Indexer is an open-source search API and indexing service designed to efficiently organise tags and metadata of objects and buckets on BNB Greenfield. It provides real-time indexing to an off-chain database, allowing easy access and searchability of metadata for storage buckets and objects through a REST and GraphQL API.\n\n\n[BUIDL](https://dorahacks.io/buidl/10616)\n\nBUIDL link: https://dorahacks.io/buidl/10616\n\nGreenWim introduces an innovative ecosystem to accelerate the adoption and generation of renewable energy. With the GenSensor technology, individuals can attach smart sensors to their green energy sources, like solar panels, to track and convert energy production into digital tokens. This mechanism not only encourages renewable energy generation but also allows for the creation and trade of green energy certificates in our marketplace, promoting transparency and economic activity within the green energy sector. \n\n\n[BUIDL](https://dorahacks.io/buidl/10405)\n\nBUIDL link: https://dorahacks.io/buidl/10405\nOwnership is one of the fundamental concepts of blockchain gaming. LocknPull takes it to the next level by using a new Lockable-ERC-1155 standard to allow players to securely “loot” NFTs from other players’ wallets upon winning a game. (Preapproval required.)The high-performance and low-gas-cost opBNB is the optimal chain for implementing this LocknPull mechanism. Utilizing blockchain technology, the LocknPull structure can be easily adopted by other gaming projects to boost the fun factor & playability of blockchain games.\n\n\n[BUIDL](https://dorahacks.io/buidl/10583)\n\nBUIDL link: https://dorahacks.io/buidl/10583\n\nMoveFlow is a programmable payment protocol in crypto that enables pre-defined transaction rules based on time and events. These payment rules can be based on time intervals, such as monthly recurring payment, or on specific events, such as the completion of tasks or milestones.\n\n\n[BUIDL](https://dorahacks.io/buidl/10431)\n\nBUIDL link: https://dorahacks.io/buidl/10431\n\nPlaymask is an SDK designed to seamlessly integrate Web3 functionalities into games using Azure PlayFab, providing a simplified user experience with automatic blockchain wallet management.\n\n\n[BUIDL](https://dorahacks.io/buidl/8108)\n\nBUIDL link: https://dorahacks.io/buidl/8108\n\nReceive.me is a ‘SocialFi’ platform similar to Linktr.ee. Users can currently link their socials & wallet addresses, and personalize their profile with different themes, banners and colors.\n\n\n[BUIDL](https://dorahacks.io/buidl/10598)\n\nBUIDL link: https://dorahacks.io/buidl/10598\n\nSograph is a decentralized social network that is in its early stages and testing phase, running on the BSC Testnet."}],"skills":null,"applied":false,"isCurrentHackerRegistered":false,"buidlsCount":176,"applicationsCount":176,"organization":{"id":755,"name":"BNB Chain","logo":"https://cdn.dorahacks.io/static/files/18d0b5f5042b432ef2fa17e41e2990e2.png"},"description":"# Introduction\nWelcome to the BNB Chain Hackathon 2024: a hub of innovation where blockchain technology meets fresh creative ideas.\n\nKicking off the new year, we're excited to announce the \"[Building Smart and Fully-On-Chain Applications](https://www.bnbchain.org/en/blog/bnb-chain-hackathon-2024-calling-all-developers)\" hackathon. This event offers a great opportunity to explore the world of decentralized applications.\n\nJoin us and immerse yourself in a dynamic space where innovative minds and blockchain technology come together to create exciting real-world innovations!\n\nStart your transformative journey by choosing the track that resonates with your passion and expertise. Whether you're a seasoned developer or a newcomer eager to make your mark, the BNB Chain Hackathon welcomes all.\n\nStay tuned for the opening ceremony, where we will unveil the full scope and details of the hackathon. \n\n[Apply here! ](https://wkf.ms/3TZo2Os)\n\n# Important Dates\n- Registration & [Workshop](https://www.youtube.com/@BNBChainOfficial/streams) period: January 18 - February 15, 2024\n- Submission period: February 8 - 22, 2024\n- Winners announced: March 1, 2024\n\n# Submission Requirements\n1. Work must be deployed on or connected to BNB Greenfield, opBNB or BNB Smart Chain (BSC) in some way\n2. Work must be open source and free for others to use\n3. Shared artifacts (GitHub, deck, and a short video)\n4. Contract addresses must have at least 2 successful transactions within the hackathon timeframe\n5. For this hackathon, projects must be new developments and not awarded in any hackathon or previously funded to ensure equal opportunity.\n6. Participants must share a Tweet describing the project, use the hashtag #BuildonBNBChain and make sure to tag the specific challenge you are applying for!\n\nIf you have any questions, join us on our [Discord hackathon support group](https://mee6.xyz/i/f00NIOmDWP).\n\n# Judging Criteria\nProjects will be judged based on the following criteria:\n\n**Design and Usability**\nIs the project designed well in terms of UX/UI?\nThe Design and Usability category assesses how well the project is designed in terms of user experience (UX) and user interface (UI). Consider factors such as the intuitiveness of the interface, ease of navigation, and overall aesthetics.\n\n**Scalability**\nDoes the project have the potential to reach 100K users?\nScalability is a critical aspect of any dapp. This category evaluates the project's potential to handle a substantial user base, with a focus on efficiency and performance. Consider how well the dapp can adapt and grow as the user load increases.\n\n**Open Source**\nHas the code been open-sourced in full/partially?\nOpen-source projects promote transparency and collaboration within the developer community. Evaluate whether the dapp's codebase has been open-sourced in full or partially, allowing others to review, contribute, and build upon the project.\n\n**Innovative**\nWhat unique functionalities does your project offer?\nInnovative, that is only a fork of any project or a glaring copy of others' functionality with adding substantial innovation or moat either from a technical or business perspective.\n\n**BNB Chain Wishlist**\nIs your project on the [BNB Chain Wishlist](https://github.com/bnb-chain/community-contributions/blob/main/README.md) categories?\nThe BNB Chain wishlist comprises desired features and enhancements for the BNB Chain. Check is the project falls in any of the categories mentioned in the BNB Chain Wishlist. This is important to drive innovation and contribution to the BNB Chain ecosystem.\n\n**Feasibility and Eligibility for Incubation**\nDoes your project have the potential to be eligible for Incubation?\nTo assess a project's long-term viability and eligibility for incubation, a comprehensive review of market fit, scalability, alignment with incubator objectives, team, technology, and adaptability to market dynamics is essential for gauging sustainability and success prospects.\n\n**Code Base Evaluation**\nHow efficiently can your codebase represent itself?\nAssessing a hackathon project's codebase requires scrutinizing clarity, functionality, and best practice compliance.","onboardingCompleted":false,"registerFormUrl":"https://forms.monday.com/forms/1450776e331d10ae01ff131c0ec86bd2?r=euc1","preRegisterTime":0,"publicContactHackerHandle":null,"hackersCount":487,"winnerAnnounced":true,"teamCount":0,"title":"BNBChain Hackathon: Building Smart and Fully-On-Chain Applications","uname":"bnbchain-hackathon","imageUrl":"https://cdn.dorahacks.io/static/files/18d179b0d4d01a9dec8b84f48c5a1b69.jpg","originUrl":null,"startTime":1705467540,"endTime":1709683200,"timezone":"-480","city":null,"visible":true,"approvalStatus":6,"state":0,"voteUrl":null,"voteMechanism":null,"bonusPrice":490000,"bonusMechanism":null,"followersCount":0,"ecosystem":"BNB Chain","applyGuide":null,"weight":0,"participationForm":"Virtual","field":"AI,Infra,Gaming,DePIN,DeSoc,DeSci","email":"tiana.l@bnbchain.org","contacts":"Email,tiana.l@bnbchain.org","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":false,"question":"1. Country\n2. Tech Solution (BSC/opBNB/Greenfield)\n3. Which Challenge, GitHub URL, Demo, Deck\n4. Deployed Smart Contract Address \n5. Deployed to other Chain (Yes/No)\n6. In any hackathon with the same idea (Yes/No)\n7. 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\n $\"\"$ \n

\n\n**Experience Layer**\n\n- **GraphQL API**: GraphQL API for consumers to perform search queries on buckets and objects.\n- **RESTful API**: REST API for consumers to perform search queries on buckets and objects.\n\n**Collection Layer**\n\n- **Job Queue**: Stores the collection trigger events in which the injester will act on. (Phase 2)\n- **Injester**: Retrieves bucket and objects metadata from Greenfield blockchain using the RPC URL.\n- **Indexer**: Process the raw data retrieved from Greenfield blockchain and index them in the offchain database.\n- **Scheduler**: Cron job responsible for starting the collection process, and restarting the process should there be a failed collection attempt.\n\n**Data Layer**\n\n- Cache: Read through cache for reducing load to the datababase and serving query for efficiently. (Phase 2)\n- Database: MongoDB database storing the index of the buckets and objects metadata.\n\n**Greenfield Blockchain**\n\n- Storage API: The [ListBuckets](https://docs.bnbchain.org/greenfield-docs/docs/greenfield-api/list-buckets/) and [ListObjects](https://docs.bnbchain.org/greenfield-docs/docs/greenfield-api/list-objects/) endpoints in Greenfield blockchain are used to fetch metadata for new buckets and objects.\n- Base API: The [GetBlockByHeight](https://docs.bnbchain.org/greenfield-docs/docs/greenfield-api/get-block-by-height/) endpoint is used to detect updates to existing buckets and objects through transactions.\n\n### Technical Considerations\n\nThe Greenfield Indexer is designed with modern architectural principles to ensure high availability, scalability, and maintainability. Below are key technical considerations that have been taken into account:\n\n- **Serverless Architecture**: The service is designed for deployment on cloud platforms as a serverless function. This approach eliminates the need for managing server resources, allowing the service to scale automatically in response to request volumes and reducing operational overhead.\n\n- **Stateless Design**: The collection service is engineered to be stateless, enabling it to be invoked multiple times without risking data duplication or inconsistency. This statelessness ensures that each operation is independent, promoting scalability and reliability.\n\n- **Resilience and Reliability**: With the implementation of scheduled triggers, the service possesses built-in resilience. These triggers not only facilitate automatic retries in case of failures but also ensure that data collection can be seamlessly resumed from the last successful synchronization point, minimizing data gaps.\n\n- **Asynchronous Operations**: Designed for asynchronous execution, the collection service allows for a \"fire and forget\" model of operation. Once initiated, it proceeds with the data ingestion and indexing processes independently, allowing calling processes to continue without waiting for completion.\n\nThese considerations underscore our commitment to leveraging contemporary cloud-native technologies and practices to deliver a robust, efficient, and user-friendly service.\n\n### Upcoming Changes\n\nWe are in the midst of migrating away from depending on the Storage API to only depending on the Blockchain API for indexing the storage buckets and objects. By listening to the `MsgCreateObject` and `MsgSetTag` transaction events, we can more confidently ensure data integrity and availability in real time.\n\n## Contributing\n\nWe welcome contributions to the Greenfield Indexer! If you have suggestions for improvements or encounter any issues, please feel free to submit an issue or pull request on [GitHub](https://github.com/jnlewis/greenfield-indexer).","teamDescription":"Jeffrey Lewis - Creator","githubPage":"https://github.com/jnlewis/greenfield-indexer","githubVerify":0,"demoLink":"https://github.com/jnlewis/greenfield-indexer","demoVideo":"https://youtu.be/E63kj7_RRUM","ownerTitle":null,"ownerIntroduction":null,"twitterVerified":false,"weibo":null,"nft":null,"scOwner":"","editTime":1736251327,"upvotes":"0.00","isRecruitingEnabled":false,"recruitingInfo":"","recruitingLink":null,"twitter":"jeffreynlewis","facebook":null,"instagram":null,"socialTelegram":null,"socialDiscord":null,"socialLinks":[],"showedFunding":false,"agentStatus":null,"createdAt":"2024-02-19T21:46:44.301901+08:00","updatedAt":"2024-03-03T11:14:07.877037+08:00","milestoneEditor":69816,"path":"/buidl/10319","techField":"","techFieldAry":[],"techTree":[0],"tags":[1,81],"otherTags":[],"origin":"-","intro":"# Greenfield Indexer\n\nGreenfield Indexer is an open-source search API and indexing service designed to efficiently organise tags and metadata of objects and buckets on BNB Greenfield.\nIt provides real-time indexing to an off-chain database, allowing easy access and searchability of metadata for storage buckets and objects through a REST and GraphQL API.\n\n## BNB Chain Grant Wishlist\n\nThis project is a respond to the following community wishlist: **Greenfield Tagging and Indexing Service**\n\nhttps://github.com/bnb-chain/community-contributions/bnb-greenfield-wishlist-corechain.md#challenge-greenfield-tagging-and-indexing-service\n\nThis challenge is proposed to incorporate a robust tagging indexing system, allowing for efficient data search by tags.\n\n## Features\n\n- **Real-time Indexing**: Automatically indexes new objects and buckets as they are added to Greenfield.\n- **Tags Search**: Offers tags search capabilities, allowing search by tags keys or value or both.\n- **Pagination Support**: Efficiently browse through large datasets with built-in pagination support.\n- **Open Source**: Fully open-source, enabling contributions and customizations from the developer community.\n\n## Environment Support\n\n- BNB Greenfield Mainnet\n- BNB Greenfield Testnet\n\n## Indexed Data\n\nIn addition to buckets and objects tags, we also index the following fields as part of the tags:\n\n- _owner\n- _visibility\n- _source_type\n- _content_type (objects only)\n\n## GraphQL and RESTful API Reference\n\nThe Greenfield Indexer API offers several queries and endpoints for interacting with the indexed metadata.\n\nFor a full list of available endpoints and detailed usage instructions, please refer to the API documentation at [api-documentation.md](https://github.com/jnlewis/greenfield-indexer/blob/main/docs/api-documentation.md)\n\n## Technical Design\n\n### Tech Stack\n\n- NextJS, NodeJS, Express, GraphQL, TypeScript, MongoDB, Vercel, Redis\n\n### Architecture Diagram\n\n

\n $\"\"$ \n

\n\n**Experience Layer**\n\n- **GraphQL API**: GraphQL API for consumers to perform search queries on buckets and objects.\n- **RESTful API**: REST API for consumers to perform search queries on buckets and objects.\n\n**Collection Layer**\n\n- **Job Queue**: Stores the collection trigger events in which the injester will act on. (Phase 2)\n- **Injester**: Retrieves bucket and objects metadata from Greenfield blockchain using the RPC URL.\n- **Indexer**: Process the raw data retrieved from Greenfield blockchain and index them in the offchain database.\n- **Scheduler**: Cron job responsible for starting the collection process, and restarting the process should there be a failed collection attempt.\n\n**Data Layer**\n\n- Cache: Read through cache for reducing load to the datababase and serving query for efficiently. (Phase 2)\n- Database: MongoDB database storing the index of the buckets and objects metadata.\n\n**Greenfield Blockchain**\n\n- Storage API: The [ListBuckets](https://docs.bnbchain.org/greenfield-docs/docs/greenfield-api/list-buckets/) and [ListObjects](https://docs.bnbchain.org/greenfield-docs/docs/greenfield-api/list-objects/) endpoints in Greenfield blockchain are used to fetch metadata for new buckets and objects.\n- Base API: The [GetBlockByHeight](https://docs.bnbchain.org/greenfield-docs/docs/greenfield-api/get-block-by-height/) endpoint is used to detect updates to existing buckets and objects through transactions.\n\n### Technical Considerations\n\nThe Greenfield Indexer is designed with modern architectural principles to ensure high availability, scalability, and maintainability. Below are key technical considerations that have been taken into account:\n\n- **Serverless Architecture**: The service is designed for deployment on cloud platforms as a serverless function. This approach eliminates the need for managing server resources, allowing the service to scale automatically in response to request volumes and reducing operational overhead.\n\n- **Stateless Design**: The collection service is engineered to be stateless, enabling it to be invoked multiple times without risking data duplication or inconsistency. This statelessness ensures that each operation is independent, promoting scalability and reliability.\n\n- **Resilience and Reliability**: With the implementation of scheduled triggers, the service possesses built-in resilience. These triggers not only facilitate automatic retries in case of failures but also ensure that data collection can be seamlessly resumed from the last successful synchronization point, minimizing data gaps.\n\n- **Asynchronous Operations**: Designed for asynchronous execution, the collection service allows for a \"fire and forget\" model of operation. Once initiated, it proceeds with the data ingestion and indexing processes independently, allowing calling processes to continue without waiting for completion.\n\nThese considerations underscore our commitment to leveraging contemporary cloud-native technologies and practices to deliver a robust, efficient, and user-friendly service.\n\n### Upcoming Changes\n\nWe are in the midst of migrating away from depending on the Storage API to only depending on the Blockchain API for indexing the storage buckets and objects. By listening to the `MsgCreateObject` and `MsgSetTag` transaction events, we can more confidently ensure data integrity and availability in real time.\n\n## Contributing\n\nWe welcome contributions to the Greenfield Indexer! If you have suggestions for improvements or encounter any issues, please feel free to submit an issue or pull request on [GitHub](https://github.com/jnlewis/greenfield-indexer).","images":["https://cdn.dorahacks.io/static/files/18dc19e5676d3c8e4bb39504bc8afb40.png"],"team":"Jeffrey Lewis - Creator","github":"https://github.com/jnlewis/greenfield-indexer","demo":"https://github.com/jnlewis/greenfield-indexer","video":"https://youtu.be/E63kj7_RRUM","socialTwitter":"jeffreynlewis","socialFacebook":null,"socialInstagram":null,"nftId":null,"haxonBuidls":[{"id":11016,"projectId":10319,"name":"Greenfield Indexer","track":"[DEFAULT_TRACK]","bounties":["Infrastructure Track Challenge 2: Empowering opBNB with Advanced Analytics Support"],"haxonId":297,"haxonName":"BNBChain Hackathon: Building Smart and Fully-On-Chain Applications","status":2,"haxonCreateAt":"2024/01/17 04:59:00 UTC"}],"kudoData":null,"bountyObjs":[],"tracks":[],"badges":["{\"schema\":\"BADGE\",\"d\":{\"index\":\"b8603\",\"badgeType\":\"buidl\",\"path\":\"/buidl/10319/achievement/b8603\",\"ownerId\":10319,\"iconName\":\"b1\",\"updatedDate\":\"2024/03/19\",\"title\":\"BNBChain Hackathon: Building Smart and Fully-On-Chain Applications\",\"detail\":\"Winner\",\"tag\":\"Hackathon\",\"imageUrl\":\"https://cdn.dorahacks.io/static/badge/b1_BNBChain~c32Hackathon:~c32Building~c32Smart~c32and~c32Fully-On-Chain~c32Applications.webp\",\"shareImageUrl\":\"https://cdn.dorahacks.io/static/badge/b1_BNBChain~c32Hackathon:~c32Building~c32Smart~c32and~c32Fully-On-Chain~c32Applications.jpg\",\"id\":8603,\"metaInfo\":{\"type\":\"HACKATHON_WINNER\",\"hackathonId\":297,\"title\":\"BNBChain Hackathon: Building Smart and Fully-On-Chain Applications\"},\"createdAt\":1710860496,\"updatedAt\":1710860496,\"type\":1,\"subjectId\":297,\"metadata\":{},\"buidl\":10319}}","{\"schema\":\"BADGE\",\"d\":{\"index\":\"b8308\",\"badgeType\":\"buidl\",\"path\":\"/buidl/10319/achievement/b8308\",\"ownerId\":10319,\"iconName\":\"b0\",\"updatedDate\":\"2024/02/20\",\"title\":\"BNBChain Hackathon: Building Smart and Fully-On-Chain Applications\",\"detail\":\"Participation\",\"tag\":\"Hackathon\",\"imageUrl\":\"https://cdn.dorahacks.io/static/badge/b0_BNBChain~c32Hackathon:~c32Building~c32Smart~c32and~c32Fully-On-Chain~c32Applications.webp\",\"shareImageUrl\":\"https://cdn.dorahacks.io/static/badge/b0_BNBChain~c32Hackathon:~c32Building~c32Smart~c32and~c32Fully-On-Chain~c32Applications.jpg\",\"id\":8308,\"metaInfo\":{\"type\":\"HACKATHON_PARTICIPATION\",\"hackathonId\":297,\"title\":\"BNBChain Hackathon: Building Smart and Fully-On-Chain Applications\"},\"createdAt\":1708415905,\"updatedAt\":1708415905,\"type\":0,\"subjectId\":297,\"metadata\":{},\"buidl\":10319}}"]}}