{"schema":"BUIDL","d":{"id":6497,"members":[],"pictures":["https://cdn.dorahacks.io/static/files/188cf80c3e8e5fc3bb82d01411bbdf66.png"],"roundProjects":[],"hackathonProjects":[{"id":5814,"hackathon":{"id":93,"tabSet":[{"id":102,"name":"Challenge Descriptions","slug":"challenge-descriptions","description":"# COSMOS HUB TRACK\n
\nServing as the economic center of Cosmos, the Cosmos Hub is a blockchain that provides vital services to the Interchain. The Cosmos Hub pioneered a new era in the blockchain space by being the first public proof-of-stake blockchain built on top of a Byzantine Fault Tolerant consensus engine.\n\n**Challenge**\n
\nFor this challenge, you are encouraged to build something that combines Interchain NFTs with Interchain Security and maximizes the capability of IBC, helping grow submissions into viable products that add value to the ATOM economic zone.\n\nSome rough ideas for you:\n- Spin up an NFT consumer chain\n- Build NFT dApps on a consumer chain (Neutron)\n- Build Interchain NFT use cases across consumer chains\n\n**Track Requirements**\n- Open Source on GitHub or Gitlab\n- Leverage Interchain Security and Interchain NFTs design in some way\n- Development Phase: At least a Proof of Concept (PoC) with a realistic and actionable plan of implementation.\n- Video Demo: Provide a video demo to illustrate your project\n- Documentation: Document the architecture, decisions and build & run steps a README.md at the root of your project\n\n**Docs**\n- https://github.com/cosmos/ibc/tree/main/spec/app/ics-721-nft-transfer\n- https://github.com/cosmos/ibc/tree/main/spec/app/ics-028-cross-chain-validation\n- https://github.com/cosmos/interchain-security\n- https://github.com/bianjieai/nft-transfer\n- https://github.com/public-awesome/ics721\n\n**Prize Pool**\n
\n\n- 1st Place: 2,750 ATOM\n- 2nd Place: 1,250 ATOM\n- 3rd Place: 500 ATOM\n
\n\nTotal: 4,500 ATOMs\n
\n\n[Onchain Governance](https://www.mintscan.io/cosmos/proposals/717)\n\n# IRISHUB TRACK\nIRISHUB (a.k.a IRISnet) is an Interchain NFT Hub tailored for next-generation dApps. Built using the Cosmos SDK, it facilitates cross-chain interoperability of NFTs, services, and on/off-chain systems.\n
\n\n**Challenge**\n
\n\nFor this challenge, you should build something on IRISHUB testnet using the ICS721 Interchain NFTs. This could be an application, platform, marketplace or other use cases that utilizes the ICS721 to provide NFT interoperability.\n\nSome rough ideas for you:\n- EVM implementation of ICS721, enabling seamless interoperability of NFTs between EVM-compatible chains and IRISHUB \n- An Interchain NFTs project, Marketplace (dApp), or other supportive tooling (e.g. NFT rentals, gamification, etc.) to support the burgeoning NFT ecosystem on IRISHUB\n\n
\n\n**Track Requirments**\n
\n\n- Open Source: Your project must be open-source and hosted on Github or Gitlab.\n- Development Phase: At least a Proof of Concept (PoC) with a realistic and actionable plan of implementation.\n- Video Demo: Provide a video demo to illustrate your project\n- Documentation: Document the architecture, decisions and build & run steps a README.md at the root of your project\n- User Interface: Have a working UI/functionality will be a plus\n\n
\n\n**Docs**\n
\n- [https://github.com/cosmos/ibc/tree/main/spec/app/ics-721-nft-transfer](https://github.com/cosmos/ibc/tree/main/spec/app/ics-721-nft-transfer)\n- [https://docs.cosmos.network/main/modules/nft](https://docs.cosmos.network/main/modules/nft)\n- [https://github.com/bianjieai/nft-transfer](https://github.com/bianjieai/nft-transfer)\n- [https://github.com/game-of-nfts/gon-testnets/blob/main/doc/testnet-info.md#irisnet](https://github.com/game-of-nfts/gon-testnets/blob/main/doc/testnet-info.md#irisnet)\n……\n\n**Prize Pool**\n
\n\n- 1st Place: 745,379 IRIS\n- 2nd Place: 447,227 IRIS\n- 3rd Place: 298,152 IRIS\n
\n\nTotal: 1,490,758 IRIS\n
\n\n[Onchain Governance](https://www.mintscan.io/iris/proposals/27)\n\n\n# STARGAZE TRACK\nStargaze is a community-owned app chain for NFTs and beyond. Stargaze prioritizes UX and UI to offer the most seamless user experience. Stargaze is 100% carbon neutral and requires zero gas. It is powered by CosmWasm and $STARS. Stargaze offers a fully decentralized NFT marketplace and exemplifies high levels of security, transparency, and flexibility. All chain code is open-source. \n
\n\n**Challenge #1:**\n
\n\nCreate governance adjustable entry incentives and exit tax for NFT transfers. \n
\nStargaze aims to make a comfortable home for NFTs to live on-chain. In order to facilitate this, we would like to build a mechanism that pays an incentive for NFTs that come to Stargaze from other chains. Inversely, Stargaze would like an adjustable tax for NFTs that transfer to another chain. This is very similar to a tariff mechanism in trade between two different countries. \n
\n\nA diagram can be seen here: [https://github.com/public-awesome/ics721/issues/52](https://github.com/public-awesome/ics721/issues/52)\n
\n\n*For this task you will collaborate with @0xekez (Twitter)*\n\n**Challenge #2:**\n
\n\nStargaze aims to integrate with Gravity Bridge in order to enable NFT transfers from Ethereum. In order to do this, we will need the following steps to be completed: \n
\n\n(1) Install sdk.nft 0.46 on Gravity Bridge testnet. Gravity Bridge will be using sdk.nft and therefore needs the upgrade. The testnet branch can be found here: [https://github.com/Gravity-Bridge/Gravity-Bridge/tree/christianborst/sdk-upgrade-v0.46](https://github.com/Gravity-Bridge/Gravity-Bridge/tree/christianborst/sdk-upgrade-v0.46)\n
\n\n(2) Install sdk.nft based ics721 version into Gravity Bridge. \n
\n\n(3) Update Gravity Bridge orchestrator in the following way: \n- Listen to the NFT transfer into gravity contract event on Ethereum\n- Construct an ics721 packet\n- Publish ICS721 packet to the chain\n
\n\n(4) Test an NFT transfer from Ethereum -> Gravity Bridge -> Stargaze\n
\n\n*Note for this challenge, you will be collaborating with @synchronetic (Twitter)*\n
\n\n**[New] Challenge #3:**\n
\n\nStargaze aims to make a seamless experience for it's users through an aesthetically pleasing and easy to understand UI. ICS721 is a complex protocol that is not easy for the average user to use through the command line. \n\nIn this challenge you will design a UI for ICS721 to transfer NFTs between Stargaze and other chains. The UI should have the minimum number of buttons and options. Bonus points for designing the look and feel as similar to the main Stargaze website as possible. \n\n**Docs**\n
\n- CosmWasm Smart Contracts development: [https://docs.stargaze.zone/developers/cosmwasm-smart-contracts](https://docs.stargaze.zone/developers/cosmwasm-smart-contracts)\n- Launching an NFT project: [https://docs.stargaze.zone/guides/readme](https://docs.stargaze.zone/guides/readme)\n- CosmWasm ics721 implementation: [https://github.com/public-awesome/ics721](https://github.com/public-awesome/ics721)\n- Constellations API:\n[https://info.testnet.stargaze.zone/](https://info.testnet.stargaze.zone/)\n\n**Prize Pool**\n
\n\n- 1st Place: $25k in STARS (1,437,017.6 STARS)\n- 2nd Place: $15k in STARS (862,210.5 STARS)\n- 3rd Place: $10k in STARS (574,807.05 STARS)\n
\n\nTotal: 2,874,035.15 STARS\n
\n\n[Onchain Governance](https://www.mintscan.io/stargaze/proposals/146)\n\n# UPTICK TRACK\nUptick Network is an NFT ecosystem application chain built on the Cosmos SDK with EVM module support. We encourage participants to explore and create innovative cross-chain use cases based on NFTs, including but not limited to collectable, utility, and rights-based NFTs. Uptick Network provides the ability to convert NFT assets from Uptick EVM to Uptick Cosmos-SDK, and enables cross-chain transfer of NFT assets based on IBC ICS-721 through Uptick Cosmos-SDK and other chains.\n
\n\n**Challenge**\n
\n\nFor this challenge, you should create NFT assets and dApps using Uptick's EVM and leveraging ICS721 Interchain NFTs between the Uptick Network testnet and other GON testnet chains to enable the display of imaginative use cases.\n\nSuggestions for the challenges:\n- Enable cross-chain transfer of NFT assets between Uptick EVM and target chains such as COSMOS-SDK, for example, the interchain operation of NFT assets between Uptick and IRISnet.\n- Enable cross-chain transfer of NFT assets between Uptick EVM and target chains with WASM support.\n- Define valuable cross-chain NFT scenarios based on the established NFT transfer channels, implement them through dApp based on Uptick Chain EVM, and demonstrate the necessity of NFT cross-chain transfer with user-friendly UI displays.\n- Provide tools and services for cross-chain functionality deployable on Uptick Chain, including but not limited to multi-chain NFT wallets, browser support for cross-chain NFT queries, and cross-chain NFT data analysis.\n- Provide interchain NFT visual tools or protocols and middleware deployable on Uptick Chain.\n- Bonus points for creative and practical implementations of use cases for Collectible NFTs and Utility NFTs in dApps, including but not limited to various cases on collectible and utility NFTs. \n
\n\n**Requirements**\n- Mandatory Requirements:\n1. Completeness: The project should be presented as a demo (at least Proof of Concept), but it should have logical completeness and implement specific functionalities. A relatively complete documentation should also be provided.\n2. Cross-chain relevance: The project must be deployed on Uptick Chain and be related to cross-chain NFT.\n3. Business value: The actual use case of the project and the potential business value should be clearly explained.\n- Bonus Points:\n1. Code open source: The project code is open source on platforms such as GitHub or GitLab.\n2. Demonstration and explanation: A complete video demonstration or PowerPoint presentation is provided to explain the project.\n3. Development language and framework: Mainstream development languages and frameworks are used, including Golang, React, Python, Solidity.\n
\n\n**Docs**\n- [https://docs.uptick.network/intro/architecture.html](https://docs.uptick.network/intro/architecture.html)\n- [https://docs.uptick.network/intro/resources.html](https://docs.uptick.network/intro/resources.html)\n- [https://docs.uptick.network/testnet/faucet.html](https://docs.uptick.network/testnet/faucet.html)\n- [https://docs.uptick.network/mainnet/explorer.html](https://docs.uptick.network/mainnet/explorer.html)\n- [https://github.com/xavier200203/gon-workshop](https://github.com/xavier200203/gon-workshop)\n
\n\n**Prize Pool**\n
\n- 1st Place: 150,000 in UPTICK\n- 2nd Place: 120,000 in UPTICK\n- 3rd Place: 90,000 in UPTICK\n- 4th-5th Places: 30,000 UPTICK each\n- 6th-9th Places: 20,000 UPTICK each\n
\n\nTotal: 500,000 UPTICK\n
\n\n[On-chain Governance](https://explorer.uptick.network/uptick-network-mainnet/gov/7)\n\nUptick Network encourages active participation from developers in the construction of the NFT application ecosystem on Uptick Network. It is not just about participating in this hackathon, but more importantly, taking the projects developed during the hackathon to the stage of actual operation. Uptick Network will provide strong support in this regard. All winners will enter the whitelist of Uptick Network's developer community and be prioritized for participation in Uptick Network's developer incentive program, which includes further incentives and incubation support, helping to turn your promising ideas and prototypes into fully operational products.\n
\n\n# OMNIFLIX TRACK\nOmniFlix is the interoperable p2p network for creators & sovereign communities (DAOs or otherwise) to mint, manage, monetize & coordinate distribution activities around NFTs.\n\n**Challenge**\n
\n\nBuild a dApp (other than a marketplace) that will utilize interchain NFTs on OmniFlix and a DeFi protocol\n\n**Track Requirments**\n
\n\n- Bonus points if CosmWasm Smart Contracts or ICA are used\n\n**Prize Pool**\n
\n\n- 1st Place: 50,000 FLIX\n- 2nd Place: 25,000 FLIX\n- 3rd Place: 25,000 FLIX\n
\n\nTotal: 100,000 FLIX"},{"id":112,"name":"Rules","slug":"rules","description":"# OVERVIEW\nParticipation in the Interchain Hackathon constitutes participants' full and unconditional agreement to and acceptance of these Rules and the decisions of the Organizers and Sponsors, which are final and binding. Winning a prize is contingent upon being compliant with these Rules and fulfilling all other requirements set forth herein. \n\n# ELIGIBILITY REQUIREMENTS\n- Participants must be at least the age of majority in the jurisdiction where they reside as of the time of entry.\n- Participants must be legally eligible to participate under the laws of their country of residence. KYC may be required when claiming prizes.\n- Participants must be legally eligible to receive prizes and crypto transactions (in case they win) and are responsible for paying any taxes on the prize winnings.\n- Employees of the Interchain Foundation, Bianjie, Sponsors, Supporters, and their subcontractors involved in this Hackathon and their respective relatives can submit projects but are not eligible for any prizes.\n\n# TEAMS AND PROJECT REQUIREMENTS\n\n**Teams**\n
\n- All teams need to [sign up](https://forms.gle/Mv745kPSc5qRnRWP7) (One team just needs to fill in the form once) and then submit projects on DoraHacks. Eligible participants and all team members will be coordinated on the #gon-hackathon channel in [Cosmos Network Discord](https://discord.gg/cosmosnetwork) where organizers and sponsors will provide tech support.\n- All team members must register on Dorahacks and be included in the submitted project.\n- Team sizes can range from one to ten members.\n\n
\n\n**Project Requirements**\n
\n- Projects must be built during the course of the hackathon, with the core concept created within the hackathon timeframe.\n- Teams can form ideas before the hackathon, but code, hacks, and prototypes must be built during the hackathon.\n- The GitHub repository must reflect that the core idea was developed and implemented in the respective start and end date of the hackathon. \n- It is not allowed to submit a project that has already been submitted to any other hackathon.\n- Using pre-existing open-source tools and libraries is permitted.\n- Read all requirements, track and challenge details, submissions guidelines carefully before submitting a project.\n\n# SUBMISSION REQUIREMENTS\n- Participants are allowed to submit more than one submission. However, each submission must be unique and substantially different from the others.\n- There is no limitation on how many tracks participants can submit their projects to as long as they believe their projects address the challenge, but track sponsors and judges will be informed of this information when they receive submissions.\n- All projects must be submitted to Dorahacks before 2023/05/19 01:00 UTC (The timeframe may be extended, but there will be notice released in advance)\n- Only one member of a team submits the project. The submitter must provide the names of all registered team members.\n- Project submissions and demonstration videos (if applicable) must be in English.\n- All submissions MUST include a link to the GitHub project that contains the project documentation or codebase (*Please note that your submissions will be public*).\n- It is encouraged to include a link to a demonstration video on how to use the project, explain the benefits of the project and show the project in use (if applicable)\n\n# NO PLAGIARISM\n- All project submissions must be original work completed during the hackathon.\n- Outside work or work that was started prior to the official start of the hackathon is not permitted.\n- All work contributed and submitted must be from the project's team members.\n- Teams caught plagiarizing will be immediately disqualified from the hackathon.\n\n# JUDGING CRITERIA\n\nEach track will be judged by its sponsor team respectively. \n
\n\nSponsors and their judges reserve the right to give a partial prize or no prize if they do not feel any submission has met the challenge. The judges’ decisions are at their own discretion and final, binding and incontestable.\n
\n\nAlthough there are different requirements of each track challenge, there are some general criteria as a reference for sponsors and their judges. \n- **Solve the challenges**: Does this address the track challenges and tie back into the track requirements?...\n- **Originality & Innovations**: How novel and innovative is the idea? Does it set out to do something unique or at least improve existing models?...\n- **Technicality & Design**: What is tech like? Is it user-friendly and does it have comprehensive and efficient features? Is it designed to scale?...\n- **Business Model & Feasibility**: What is the value proposition and how does it set out to differentiate itself? How will it capture the market and/or generate revenue?...\n- **Documentation & Usability**: Is there a clear explanatory documentation? Is it clean and intuitive such that users not familiar with blockchain can easily interact with the project?...\n- **Utility**: Providing a clear demonstration video is encouraged.\n\n# PRIZE AND ALLOCATION\nSponsors are offering the equivalent of around 300,000 USD paid in sponsors’ tokens and credits as prizes for this Interchain Hackathon. Prizes will be distributed by each sponsor to their track winners and eligible participants according to their requirements and judging. The Interchain Foundation and Bianjie will not be responsible for prize allocation.\n
\n\nAll prizes will be paid in cryptocurrency and credits from sponsors. Participants need to make sure that they are legally eligible to receive crypto transactions in their jurisdictions (in case they win).\n
\n\nCosmos Hub, IRISnet, and Stargaze have determined the number of their tokens through their on-chain governance, and OmniFlix and Uptick have also announced the equivalent number of their tokens.\n
\n\nThe Interchain Foundation, Bianjie and other sponsors are not responsible for any price fluctuations, either up or down, after the number of tokens is determined regardless of when the prize is actually distributed to the winners.\n
\n\nThe Interchain Foundation, Bianjie and other sponsors are not responsible for any dispute between Participants or various team members. The participant is solely responsible for paying any applicable taxes arising from winning a prize.\n\n# CODE OF CONDUCT\nThis hackathon is a community event for learning, collaboration, and engagement in the developer community. We value the participation of each member of the developer community and want everyone involved to have an enjoyable and fulfilling experience.\n
\n\nOur hackathon is dedicated to providing a safe and comfortable environment that provides a harassment-free experience for everyone, regardless of gender, gender identity and expression, age, sexual orientation, disability, physical appearance, body size, race, ethnicity, nationality, religion, political views, previous hackathon attendance or lack of, computing experience or lack of, and chosen programming language or tech stack.\n
\n\nHarassment of hackathon participants is not tolerated in any form. Sexual and racist language and imagery are not appropriate in any aspect of the hackathon, including hacks, talks, presentations, or demos, workshops, social media, and any other online media.\nHackathon participants violating these rules may be sanctioned or expelled from the hackathon at the discretion of the hackathon organizers."},{"id":116,"name":"Submission Guide","slug":"submission-guide","description":"# Getting Started [3-5 MIN]\n**1. You should submit your BUIDL via [DoraHacks.io](https://dorahacks.io/). Before that, make sure that you already have an account.**\n
\n\nUse the **Sign in/up button** at the upper right corner of the page to access the sign-up options.\n\n![steo1.png](https://cdn.dorahacks.io/static/files/187b688d041d9e93db6f3bb449aa74b2.png)\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\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\n**2. Before the submission of DDL on May 19th, please make sure you have added your Github link to the project. You can submit the project first, edit it later before the DDL.**\n
\n\nClick “Submit BUIDL”.\n\n\n![ste2.png](https://cdn.dorahacks.io/static/files/187b68e9ab31ab412c4656f48d2b007a.png)\n\n> → **If you already have created a BUIDL on DoraHacks**\n
\n\nChoose your BUIDL project from **\"Apply with Existing BUIDL\"** and select the track(s) you want to join.\n\n![d.png](https://cdn.dorahacks.io/static/files/187bb5cc4fca4f4bc55965b4a6ab976d.png)\n\n> → **If you want to submit a new BUIDL project**\n
\n\nClick **“Create a new BUIDL”** and fill in the form as required. You'll be directed to \"Apply for Release Your Inner Bull\" page after the new BUIDL setup.\n
\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![ste4.jpg](https://cdn.dorahacks.io/static/files/187b69102d409a685aa6be74b89b78ca.jpg)\n\nDon't forget to check \"I agree to the User Agreement\".\n\n\n![ste5.png](https://cdn.dorahacks.io/static/files/187b69174fadab7066f59be49ecb84ce.png)\n\nBack to Application window. Choose your BUIDL project from **\"Apply with Existing BUIDL\"** and identify the track you want to join.\n\nWhen submission succeeds, you'll see this notification.\n\n\n![ste6.png](https://cdn.dorahacks.io/static/files/187b691d0297615b203ec5e4847a17ef.png)\n\n# Want to make some changes to your BUIDL?\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![o.png](https://cdn.dorahacks.io/static/files/187b6f2bb7da1b572cf45aa49d0ba5ae.png)\n\n![steo.png](https://cdn.dorahacks.io/static/files/187b6efeb7ebb25227f43684f7ba3dba.png)"},{"id":183,"name":"Workshops","slug":"workshops","description":"# Workshops\n\nWatching Workshops & Videos from track teams and experts is an excellent starting point for developing your Interchain NFTs projects in Cosmos. \n\nParticipate in GoN Interchain Hackathon and submit your work now: https://dorahacks.io/hackathon/game-of-nfts/detail. \n\n\n\n![youtube](https://www.youtube.com/watch?v=TAhvBFZXrn0)\n\n\n![youtube](https://www.youtube.com/watch?v=TUfOINmI85I)\n\n\n![youtube](https://www.youtube.com/watch?v=1Yl7EgnBLms)\n\n\n![youtube](https://www.youtube.com/watch?v=XyfnsXOZoy4&list=PLE4J1RDdNh6sG__XJtsNjwXgI8hTg4aTZ&index=1)\n\n\n![youtube](https://www.youtube.com/watch?v=qpSU19DDgGY&list=PLE4J1RDdNh6sG__XJtsNjwXgI8hTg4aTZ&index=2)\n\n\n![youtube](https://www.youtube.com/watch?v=FeMMujzI2U0&list=PLE4J1RDdNh6sG__XJtsNjwXgI8hTg4aTZ&index=3)"},{"id":240,"name":"Results","slug":"results","description":"# Cosmos Game of NFTs - Interchain Hackathon Recap & Result Announcement\n\nThe Interchain Hackathon, featuring The Cosmos Game of NFTs, has recently come to a close. Developers were invited to create innovative solutions using Interchain NFTs (ICS721), with a prize of $300,000 USD up for grabs. We received an impressive 64 submissions across 5 tracks, from which 13 winners were selected. It is truly inspiring to witness so many talented developers contribute to the growth of the blockchain industry. Let's now take a closer look at these 13 excellent winning submissions!\n\n# AWScloud Activate Special Award\n\n**🏅[Lendlord](http://dorahacks.io/buidl/6448)**\n\nLendlord is an Interchain NFT Leasing platform designed to revolutionize the digital asset-sharing landscape by introducing an innovative dApp for NFT leasing. The platform aims to create an interconnected and inclusive digital economy where users can unlock the full potential of their NFT holdings and actively participate in a thriving ecosystem of shared resources.\n\n# Cosmos Hub track\n\n### 🥇1st Place\n\n**[NFTokenizer](http://dorahacks.io/buidl/6484)**\n\nNFTokenizer allows the user to tokenize any asset into an NFT with cross-chain compatibility. The project is built on Neutron as a dApp and utilizes Interchain Security implicitly by getting the whole Cosmos Hub security behind the minted NFTs. It combines NFTs, ICA, ICS and ICS721, to tokenize any asset (including accounts) without implementing another standard.\n\n
\n\n### 🥈2nd Place\n\n**[CosmoSwap](http://dorahacks.io/buidl/6516)**\n\nCosmoSwap is a DeFi aggregator that unites the liquidity of decentralized exchanges into one comprehensive interface via IBC - By leveraging IBC, the Dapp performs cross-chain tokens swap.\n\n
\n\n### 🥉3rd Place\n\n**[Lendlord](http://dorahacks.io/buidl/6448)**\n\nLendlord is an Interchain NFT Leasing platform designed to provide a comprehensive experience of the entire NFT leasing process in a one-stop user-friendly UI while offering cross-chain circulation and use cases in the [#Cosmos](https://twitter.com/hashtag/Cosmos?src=hashtag_click)\n\n# IRISHUB track\n\n
\n\n### 🥇1st Place\n\n**[Lendlord](http://dorahacks.io/buidl/6448)**\n\nLendlord is an Interchain NFT Leasing platform designed to provide a comprehensive experience of the entire NFT leasing process in a one-stop user-friendly UI while offering cross-chain circulation and use cases in the [](https://twitter.com/hashtag/Cosmos?src=hashtag_click)Cosmos\n\n
\n\n### 🥈2nd Place\n\n**[NFT Vault](https://dorahacks.io/buidl/5437)**\n\nNFT Vault is a module to implement functionality similar to ERC-6551 for binding NFTs to accounts, and combining it with ICS-721 within the interchain NFTs ecosystem. The project is at the forefront of innovation, potentially unlocking new possibilities for NFTs and DID.\n\n
\n\n### 🥉3rd Place\n\n**[UniCard](https://dorahacks.io/buidl/6424)**\n\nUniCard is a cross-chain NFT digital card wallet that allows users to create NFTs for exchanging goods or services. It has the potential to be applied in certain C2C exchange scenarios, serving the real-world economy. Excellent concept and UX with well-organized information architecture.\n\n# Uptick track\n\n
\n\n### 🥇1st Place\n\n**[Interchain Marketplace](https://dorahacks.io/buidl/6427)**\n\nInterchain Marketplace is a fully decentralized platform based on blockchain technology, providing secure, transparent, and efficient NFT digital asset trading services.\n\n
\n\n### 🥈2nd Place\n\n**[CreditWise](https://dorahacks.io/buidl/6426)**\n\nCreditWise is a DeFi platform for NFTs that utilizes smart contracts to offer decentralized loan management services by allowing users to pledge and borrow NFTs.\n\n
\n\n### 🥉3rd Place\n\n**[UniCard](https://dorahacks.io/buidl/6424)**\n\nUniCard is a cross-chain NFT digital card wallet that allows users to create NFTs for exchanging goods or services. It has the potential to be applied in certain C2C exchange scenarios, serving the real-world economy. Excellent concept and UX with well-organized information architecture.\n\n
\n\n### 🏅4th Place\n\n**[ICScan](https://dorahacks.io/buidl/6425)**\n\nICScan is an Interchain explorer that provides a seamless way to transparently and accurately display ICS-721 transaction information for the Cosmos Ecosystem.\n\n# Stargaze track\n\n### 🥇1st Place\n\n**[Gravity Bridge ERC721](https://dorahacks.io/buidl/6483)**\n\nThe project aims to allow NFTs transfers from Ethereum to Cosmos and beyond by connecting Gravity Bridge to ICS721 (Interchain NFT). The implementation was showcased with a UI, and it is the first working demo for this essential infrastructure to unlock NFTs interoperability between Ethereum and Cosmos.\n\n
\n\n### 🥈2nd Place\n\n**[ICS721 transfers with taxes and incentives](https://dorahacks.io/buidl/6497)**\n\nThe Ark Protocol team constructed the proxy contracts needed for areas other than just incentives and fees, with the vision of showcasing outgoing proxies for safe and secure ICS721 Interchain Transfers.\n\n
\n\n### 🥉3rd Place\n\n**[Astral - Interchain NFTs](https://dorahacks.io/buidl/6528)**\n\nAstral aims to improve NFTs transfers UX by easily bridging cosmos NFTs with ICS721. The application serves for smooth transfers, transparent provenance, and powerful NFT tools in the next chapter of the Interoperable NFT.\n\n# OmniFlix Track\n\n### 🥇1st Place\n\n**[Gravity Bridge ERC721](https://dorahacks.io/buidl/6483)**\n\nThe project aims to allow NFTs transfers from Ethereum to Cosmos and beyond by connecting Gravity Bridge to ICS721 (Interchain NFT). The implementation was showcased with a UI, and it is the first working demo for this essential infrastructure to unlock NFTs interoperability between Ethereum and Cosmos.\n\n
\n\n### 🥈2nd Place\n\n**[NFT-CLI](https://dorahacks.io/buidl/6485)**\n\nNFT-CLI is an interactive command line tool for interacting with the NFTs in the interchain.\n\n
\n\n### 🥉3rd Place\n\n**[NFT Vault](https://dorahacks.io/buidl/5437)**\n\nNFT Vault is a module to implement functionality similar to ERC-6551 for binding NFTs to accounts and combining it with ICS-721 within the interchain NFTs ecosystem. The project is at the forefront of innovation, potentially unlocking new possibilities for NFTs and DID.\n\n
\n\n### 🏅Bonus Prize\n\n**[CrowdControl ChainWars](https://dorahacks.io/buidl/6399)**\n\nCrowdControl ChainWars is a cross-chain NFT game that offers NFTs from Uptick, Omniflix, or Stargaze an opportunity to engage in thrilling battles against NFTs from rival chains. The project inspires NFT holders to move their NFTs across different chains, engaging in epic, cross-chain conflicts."}],"skills":null,"applied":false,"isCurrentHackerRegistered":false,"buidlsCount":64,"applicationsCount":77,"organization":{"id":168,"name":"Game of NFTs","logo":"https://cdn.dorahacks.io/static/files/1866cbafb33cbc867ce9dd24acc9e3b9.png"},"description":"# UPDATES\n\nAfter discussing with sponsors, the project submission deadline is now set for **10:00 am UTC, June 19, 2023**.\n\nWe've received all submissions and, to protect originality, they will be reviewed and displayed together during the late stages of the event. Stay tuned for updates and craft your projects!\n\n# INTRODUCTION\n\n[Cosmos Game of NFTs](https://interchainnfts.dev/gon/) (GoN) is a two-phase event supported by the [Interchain Foundation](http://interchain.io/) and organized by [Bianjie](https://bianjie.hk/). It includes Public Incentivized Testings and an Interchain Hackathon where participants can test the [Interchain NFTs (ICS721)](https://github.com/cosmos/ibc/tree/main/spec/app/ics-721-nft-transfer) and build innovative solutions on top.\n\n- Public Incentivized Testing (End)\n- Interchain Hackathon (**NOW!**)\n\nThe Interchain Hackathon is the Phase 2 of GoN. It is designed to incentivize developers to build innovative solutions with Interchain NFTs (ICS721) with prizes **equaling about $300,000 USD** in Sponsors' tokens and credits.\n\n\n# HYBRID PRIZE POOL\n\n- Cosmos Hub Track: [4,500 ATOMs](https://www.mintscan.io/cosmos/proposals/717)\n- IRISHUB Track: [1,490,758 IRIS](https://www.mintscan.io/iris/proposals/27) \n- Stargaze Track: [2,874,035.15 STARS](https://www.mintscan.io/stargaze/proposals/146)\n- Uptick Track: [500,000 UPTICK](https://explorer.uptick.network/uptick-network-mainnet/gov/7)\n- OmniFlix Track: 100,000 FLIX\n- AWS: Participants will be eligible to apply for up to $5,000 in AWS Activate credits. AWS Activate Credits are not guaranteed.\n- Pitch chances with IDG Capital and HashKey Capital!\n
\n\nFor challenge details of each track, please go to [https://dorahacks.io/hackathon/game-of-nfts/challenge-descriptions](https://dorahacks.io/hackathon/game-of-nfts/challenge-descriptions)\n\nView more at: https://interchainnfts.dev/gon/\n\n# HOW TO JOIN\n- **Step 1.** Read through the [Rules & Requirements](https://dorahacks.io/hackathon/game-of-nfts/rules)\n- **Step 2.** Join [Cosmos Network Discord](https://discord.gg/cosmosnetwork) and coordinate in the #gon-hackathon channel\n- **Step 3.** Fill out the signup form https://forms.gle/Mv745kPSc5qRnRWP7 (One team needs fill it out once), and all team members should register on DoraHacks\n- **Step 4.** Check out the [Tracks & Challenge Details](https://dorahacks.io/hackathon/game-of-nfts/challenge-descriptions), and build your projects\n- **Step 5.** Choose the track and submit your entry with all teammates included via DoraHacks based on the [Submission Guide](https://dorahacks.io/hackathon/game-of-nfts/submission-guide)\n\n# REQUIREMENTS\n**Eligibility Requirements**\n- Participants must be at least the age of majority in the jurisdiction where they reside as of the time of entry.\n- Participants must be legally eligible to participate under the laws of their country of residence. KYC may be required when claiming prizes.\n- Participants must be legally eligible to receive prizes and crypto transactions (in case they win) and are responsible for paying any taxes on the prize winnings.\n- Employees of the Interchain Foundation, Bianjie, Sponsors, Supporters, and their subcontractors involved in this Hackathon and their respective relatives can submit projects but are not eligible for any prizes.\n
\n\n**Project Requirements**\n- Projects must be built during the course of the hackathon, with the core concept created within the hackathon timeframe.\n- Teams can form ideas before the hackathon, but code, hacks, and prototypes must be built during the hackathon.\n- The GitHub repository must reflect that the core idea was developed and implemented in the respective start and end date of the hackathon.\n- It is not allowed to submit a project that has already been submitted to any other hackathon.\n- Using pre-existing open-source tools and libraries is permitted.\n- Read all requirements, track and challenge details, submissions guidelines carefully before submitting a project.\n\n**Submission Requirements**\n- Participants are allowed to submit more than one submission. However, each submission must be unique and substantially different from the others.\n- There is no limitation on how many tracks participants can submit their projects to as long as they believe their projects address the challenge, but track sponsors and judges will be informed of this information when they receive submissions.\n- All projects must be submitted to Dorahacks before 2023/05/19 01:00 UTC (The timeframe may be extended, but there will be notice released in advance)\n- Only one member of a team submits the project. The submitter must provide the names of all registered team members.\n- Project submissions and demonstration videos (if applicable) must be in English.\n- All submissions MUST include a link to the GitHub project that contains the project documentation or codebase (*Please note that your submissions will be public*).\n- It is encouraged to include a link to a demonstration video on how to use the project, explain the benefits of the project and show the project in use (if applicable).\n
\n\n**Make sure to check out [the full Rules](https://dorahacks.io/hackathon/game-of-nfts/rules) before submitting your entry.**\n\n# JUDGING CRITERIA\nEach track will be judged by its sponsor team respectively.\n
\n\nSponsors and their judges reserve the right to give a partial prize or no prize if they do not feel any submission has met the challenge. The judges’ decisions are at their own discretion and final, binding and incontestable.\n
\n\nAlthough there are different requirements of each track challenge, there are some general criteria as a reference for sponsors and their judges.\n
\n\n- **Solve the challenges**: Does this address the track challenges and tie back into the track requirements?...\n- **Originality & Innovations**: How novel and innovative is the idea? Does it set out to do something unique or at least improve existing models?...\n- **Technicality & Design**: What is tech like? Is it user-friendly and does it have comprehensive and efficient features? Is it designed to scale?...\n- **Business Model & Feasibility**: What is the value proposition and how does it set out to differentiate itself? How will it capture the market and/or generate revenue?...\n- **Documentation & Usability**: Is there a clear explanatory documentation? Is it clean and intuitive such that users not familiar with blockchain can easily interact with the project?...\n- **Utility**: Providing a clear demonstration video is encouraged.\n\n# SPONSORS & PARTNERS\n\n- **Organizers & Supporters** — Interchain Foundation, Bianjie\n- **Track Sponsors** — Cosmos Hub, IRISHub, Stargarze, Uptick, OmniFlix\n- **Institution Sponsors** — Amazon Web Services (AWS), IDG Capital, HashKey Capital\n- **Tooling Supporters** — DoraHacks, Hamster\n\n# IMPORTANT LINKS\n- Discord: [Cosmos Discord](https://discord.gg/cosmosnetwork) #🦦┇gon-hackathon \n- Github: [Interchain NFT (ICS-721) Specs](https://github.com/cosmos/ibc/tree/main/spec/app/ics-721-nft-transfer)\n- Github: [ICS-721 Go implementation](https://github.com/bianjieai/nft-transfer)\n- Github: [ICS-721 CosmWasm implementation](https://github.com/public-awesome/ics721)\n- Blog: [Introducing Interchain NFTs](https://medium.com/the-interchain-foundation/interchain-nft-a-protocol-for-bridging-assets-between-chains-9473cd47cba7)\n- Blog: [Announcing GoN Testnet](https://blog.cosmos.network/announcing-game-of-nfts-phase-1-incentivized-testnet-is-open-for-registration-44091b05520e)\n- Blog: [Start of GoN Testnet](https://blog.cosmos.network/game-of-nfts-incentivized-testing-kicks-off-c4ce529b4922)\n- Blog: [Updates of GoN Testnet and Hackathon Prep](https://blog.cosmos.network/update-on-game-of-nfts-16f3efdfffd)\n- Web: [Game of NFTs event page](https://interchainnfts.dev/gon/)","onboardingCompleted":false,"registerFormUrl":null,"preRegisterTime":0,"publicContactHackerHandle":null,"hackersCount":148,"title":"Cosmos Game of NFTs - Interchain Hackathon","uname":"game-of-nfts","imageUrl":"https://cdn.dorahacks.io/static/files/1879d7186e329cb00c4e25f4d1aa437e.png","originUrl":null,"startTime":1682470800,"endTime":1687168800,"timezone":"-480","city":null,"visible":true,"approvalStatus":6,"state":0,"voteUrl":null,"voteMechanism":null,"bonusPrice":300000,"bonusMechanism":null,"followersCount":0,"ecosystem":"Cosmos,Interchain","applyGuide":null,"weight":25,"participationForm":"Virtual","field":"Blockchain","email":"contact@irisnet.org","contacts":"Telegram,irisnetcat","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":null,"countryId":null,"cityId":null,"venueName":null,"venueAddress":null,"category":0,"isEnableBounty":true,"isBountyRequired":false,"isEndedBountyJudging":false,"bountiesLimitForBuidl":10,"isPublicBountyJudging":false,"isMultiTracksAllowed":false,"tracksLimitForBuidl":0,"showIdeaTab":true,"showQuestionTab":true,"status":2},"status":4,"bounty":null,"track":null,"table":"0","trackObj":null,"bountyObjs":[{"id":313,"name":"STARGAZE TRACK","token":"USD","bonus":287403515,"link":"","description":"# STARGAZE TRACK\nStargaze is a community-owned app chain for NFTs and beyond. Stargaze prioritizes UX and UI to offer the most seamless user experience. Stargaze is 100% carbon neutral and requires zero gas. It is powered by CosmWasm and $STARS. Stargaze offers a fully decentralized NFT marketplace and exemplifies high levels of security, transparency, and flexibility. All chain code is open-source. \n
\n\n**Challenge #1:**\n
\n\nCreate governance adjustable entry incentives and exit tax for NFT transfers. \n
\nStargaze aims to make a comfortable home for NFTs to live on-chain. In order to facilitate this, we would like to build a mechanism that pays an incentive for NFTs that come to Stargaze from other chains. Inversely, Stargaze would like an adjustable tax for NFTs that transfer to another chain. This is very similar to a tariff mechanism in trade between two different countries. \n
\n\nA diagram can be seen here: [https://github.com/public-awesome/ics721/issues/52](https://github.com/public-awesome/ics721/issues/52)\n
\n\n*For this task you will collaborate with @0xekez (Twitter)*\n\n**Challenge #2:**\n
\n\nStargaze aims to integrate with Gravity Bridge in order to enable NFT transfers from Ethereum. In order to do this, we will need the following steps to be completed: \n
\n\n(1) Install sdk.nft 0.46 on Gravity Bridge testnet. Gravity Bridge will be using sdk.nft and therefore needs the upgrade. The testnet branch can be found here: [https://github.com/Gravity-Bridge/Gravity-Bridge/tree/christianborst/sdk-upgrade-v0.46](https://github.com/Gravity-Bridge/Gravity-Bridge/tree/christianborst/sdk-upgrade-v0.46)\n
\n\n(2) Install sdk.nft based ics721 version into Gravity Bridge. \n
\n\n(3) Update Gravity Bridge orchestrator in the following way: \n- Listen to the NFT transfer into gravity contract event on Ethereum\n- Construct an ics721 packet\n- Publish ICS721 packet to the chain\n
\n\n(4) Test an NFT transfer from Ethereum -> Gravity Bridge -> Stargaze\n
\n\n*Note for this challenge, you will be collaborating with @synchronetic (Twitter)*\n
\n\n**Docs**\n
\n- CosmWasm Smart Contracts development: [https://docs.stargaze.zone/developers/cosmwasm-smart-contracts](https://docs.stargaze.zone/developers/cosmwasm-smart-contracts)\n- Launching an NFT project: [https://docs.stargaze.zone/guides/readme](https://docs.stargaze.zone/guides/readme)\n- CosmWasm ics721 implementation: [https://github.com/public-awesome/ics721](https://github.com/public-awesome/ics721)\n\n**Prize Pool**\n
\n\n- 1st Place: $25k in STARS (1,437,017.6 STARS)\n- 2nd Place: $15k in STARS (862,210.5 STARS)\n- 3rd Place: $10k in STARS (574,807.05 STARS)\n
\n\nTotal: 2,874,035,15 STARS\n
\n\n[Onchain Governance](https://www.mintscan.io/stargaze/proposals/146)"}]}],"chain":[],"chainList":[],"appliedGrant":false,"acceptRewards":false,"owner":93634,"ownerInfo":{"nickname":"Ark Protocol","username":"U_c7b1df72db3272","avatar":"https://cdn.dorahacks.io/static/files/18d3bbff0c91b387283391346a4b5713.png"},"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":[],"otherInfrastructures":[],"lastEditor":{"id":93634,"username":"U_c7b1df72db3272","date":1687108777000},"upvoted":false,"followed":false,"upvoters":{"count":0,"list":[]},"kycStatus":0,"ideas":[],"name":"Cosmos Game of NFTs: ICS721 transfers with taxes and incentives","techniqueField":"","source":"Hackathon-https://dorahacks.io/hackathon/game-of-nfts","vision":"Outgoing Proxies for safe and secure ICS721 Interchain Transfers","projectDescription":"NFTs (and tokens in general) going interchain is a complex interaction between 2 chains.\n\nThis project covers these 2 hackathon challenges:\n\n1. Contract examples taxes and incentives\n2. Seamless UI for ICS721 transfers\n\nArk Protocol will do a demo based on Stargaze and Juno testnets. Repos:\nWasm code: https://github.com/arkprotocol/ics721-plus\nFrontend code: https://github.com/arkprotocol/ics721-frontend\n\nBoth repos are currently private, with access for the Stargaze team. Once approved and ready for mainnet, we aim to make it public.\n\n1. Taxes and Incentives Contracts\nWe have provided 6 different ICS721 outgoing proxy contracts, including (optional) taxes (aka 'transfer fee') for ICS721 transfers. Once a fee is defined, an NFT holder needs to send funds - as transfer fees - for transferring an NFT to another chain.\n\nNOTE: by the design of the ICS721 contract, once an outgoing proxy is set, then transfers are only(!) eligible by using this outgoing proxy! Technically there are ways of bypassing this - but it'll be hard and insecure (read more below).\n\nFor the receiving chain, we have provided - a simple but safe and straight forward - incoming incentives contract. Funds are send to this contract, where holders can make `claim_incentives` call on these funds. Each user is eligible to do a one-time claim per NFT.\n\nNOTE: another way is having an ICS721 callback, for automatically incentivizing a recipient. Callbacks will be highly beneficial for other uses cases as well (like automatically listing an incoming NFT on a marketplace, swapping funds/IBC tokens e.g. into STARS, airdrops, and other ICS721-based utilities).\n\n2) Frontend with 2 UIs covering a Profile page for transfers and an ICS721 dashboard on each chain\n\nOnce connected a user may looked up all owned NFTs in the Profile page. Once a holder select an NFT and triggers an ICS721 transfer, there is a step-by-step guide:\n\n1. Select target chain (IBC Channel)\n2. Enter target wallet for NFT recipient\n3. Approve Outgoing Proxy eligible to transfer an NFT\n4. Transfer\n\nIn step 2, the transfer dialog by default suggests its counterpart as target recipient (e.g. \"starsXYZ\") for the owner's source wallet (e.g. \"junoXYZ\").\nAt the beginning everyone will be noobs related to ICS721. Hence a guided transfer will be essential for users getting familiar with ICS721. Later an additional one-click transfer will be a no-brainer for approving a proxy and sending an NFT with counterpart wallet and to a preferred chain.\n\nIn addition to the Profile page, there is also the ICS721 dashboard. It shows all existing ICS721 contracts (aka ICS721 Service Providers) on each chain. A user can select an ICS721 contract for getting more infos. These details will provide answers for these questions:\n\n- how many collections are using this service?\n- how many incoming NFTs have arrived?\n- how many outgoing NFTs have been send?\n- is this the home chain for collection XYZ?\n- is this collection escrowed by ICS721?\n- who owns this NFT?\n- is NFT escrowed by ICS721?\n\nThere is a lot more showcase and demo - depending on your time :). Like:\n- Different use cases for outgoing proxies contracts\n- Tools for builders\n\nI. Different use cases for outgoing proxies contracts\n\na. rate limited (e.g. max transfers of X NFTs per day)\nb. channel whitelist proxy: transfer only for given IBC channels (since EVERYONE is able to create new channels on existing IBC contracts, like for exploits)\nc. collection whitelist proxy and code id whitelist proxy: transfers only for given collections or cw721 code ids. This way an exploited, custom cw721 contracts will be avoided\nd. collection channels whitelist proxy: allowing creators to control whether their collection can be transferred and on which channels (=chains)\n\nII. Tools for builders\n\nArk Protocol supports the NFT community for going interchain. For making this happened, we have build libs, packages and tools for builders to build ICS721 utilities:\n\na. macros\nThe code for each outgoing and incentives contract is pretty slim. The reason for this is: each uses one of these 2 macros we have build:\n\n- [`packages/cw-ics721-context-derive`](https://github.com/arkprotocol/ics721-plus/tree/main/packages/cw-ics721-context/derive)\n Contains `cw_ics721_context_execute` and `cw_ics721_context_query` macros for generating ICS721 Context-based contracts. Examples here: [`cw-ics721-incoming-incentives`](https://github.com/arkprotocol/ics721-plus/blob/main/contracts/cw-ics721-incoming-incentives/src/msg.rs#L13-L20).\n\n- [`packages/cw-ics721-outgoing-proxy-derive`](https://github.com/arkprotocol/ics721-plus/tree/main/packages/cw-ics721-outgoing-proxy/derive)\n Contains `cw_ics721_outgoing_proxy_execute` and `cw_ics721_outgoing_proxy_query` macros for generating ICS721 proxies. Examples here: [`cw-ics721-outgoing-fee-proxy`](https://github.com/arkprotocol/ics721-plus/blob/main/contracts/cw-ics721-outgoing-fee-proxy/src/msg.rs#L12-L16).\n \nFor more details checkout the READMEs, starting here: https://github.com/arkprotocol/ics721-plus/blob/main/README.md\n\nb. packages\n\nThere are multiple packages for builders integrating in their contract:\n- whitelist and whitelist map (e.g. used in outgoing proxies)\n- multi test code for testing proxies and ICS721\n- example usages are shown in contracts folder\n\nAlso for the frontends we plan to provide components and js libs for builders to use.","teamDescription":"Core team: Mr T, art3mix, tatsen, m3rlin5ky, Crypto_Scotty_420\nStaff and Angels: Chauncey St John, Riley Petitt, BIG BOOMS, otte3000, MG, ecclesia, agentX10","githubPage":"https://github.com/arkprotocol","githubVerify":0,"demoLink":null,"demoVideo":null,"ownerTitle":null,"ownerIntroduction":null,"twitterVerified":false,"weibo":null,"nft":null,"scOwner":"","editTime":1687108777,"upvotes":"0.00","isRecruitingEnabled":false,"recruitingInfo":"","recruitingLink":null,"twitter":"ArkProtocol","facebook":null,"instagram":null,"socialTelegram":null,"socialDiscord":null,"socialLinks":[],"showedFunding":false,"createdAt":"2023-06-19T01:19:37.133377+08:00","updatedAt":"2023-06-19T11:12:44.721989+08:00","milestoneEditor":93634,"path":"/buidl/6497","techField":"","techFieldAry":[],"techTree":[0],"tags":[],"otherTags":[],"origin":"Hackathon-https://dorahacks.io/hackathon/game-of-nfts","intro":"NFTs (and tokens in general) going interchain is a complex interaction between 2 chains.\n\nThis project covers these 2 hackathon challenges:\n\n1. Contract examples taxes and incentives\n2. Seamless UI for ICS721 transfers\n\nArk Protocol will do a demo based on Stargaze and Juno testnets. Repos:\nWasm code: https://github.com/arkprotocol/ics721-plus\nFrontend code: https://github.com/arkprotocol/ics721-frontend\n\nBoth repos are currently private, with access for the Stargaze team. Once approved and ready for mainnet, we aim to make it public.\n\n1. Taxes and Incentives Contracts\nWe have provided 6 different ICS721 outgoing proxy contracts, including (optional) taxes (aka 'transfer fee') for ICS721 transfers. Once a fee is defined, an NFT holder needs to send funds - as transfer fees - for transferring an NFT to another chain.\n\nNOTE: by the design of the ICS721 contract, once an outgoing proxy is set, then transfers are only(!) eligible by using this outgoing proxy! Technically there are ways of bypassing this - but it'll be hard and insecure (read more below).\n\nFor the receiving chain, we have provided - a simple but safe and straight forward - incoming incentives contract. Funds are send to this contract, where holders can make `claim_incentives` call on these funds. Each user is eligible to do a one-time claim per NFT.\n\nNOTE: another way is having an ICS721 callback, for automatically incentivizing a recipient. Callbacks will be highly beneficial for other uses cases as well (like automatically listing an incoming NFT on a marketplace, swapping funds/IBC tokens e.g. into STARS, airdrops, and other ICS721-based utilities).\n\n2) Frontend with 2 UIs covering a Profile page for transfers and an ICS721 dashboard on each chain\n\nOnce connected a user may looked up all owned NFTs in the Profile page. Once a holder select an NFT and triggers an ICS721 transfer, there is a step-by-step guide:\n\n1. Select target chain (IBC Channel)\n2. Enter target wallet for NFT recipient\n3. Approve Outgoing Proxy eligible to transfer an NFT\n4. Transfer\n\nIn step 2, the transfer dialog by default suggests its counterpart as target recipient (e.g. \"starsXYZ\") for the owner's source wallet (e.g. \"junoXYZ\").\nAt the beginning everyone will be noobs related to ICS721. Hence a guided transfer will be essential for users getting familiar with ICS721. Later an additional one-click transfer will be a no-brainer for approving a proxy and sending an NFT with counterpart wallet and to a preferred chain.\n\nIn addition to the Profile page, there is also the ICS721 dashboard. It shows all existing ICS721 contracts (aka ICS721 Service Providers) on each chain. A user can select an ICS721 contract for getting more infos. These details will provide answers for these questions:\n\n- how many collections are using this service?\n- how many incoming NFTs have arrived?\n- how many outgoing NFTs have been send?\n- is this the home chain for collection XYZ?\n- is this collection escrowed by ICS721?\n- who owns this NFT?\n- is NFT escrowed by ICS721?\n\nThere is a lot more showcase and demo - depending on your time :). Like:\n- Different use cases for outgoing proxies contracts\n- Tools for builders\n\nI. Different use cases for outgoing proxies contracts\n\na. rate limited (e.g. max transfers of X NFTs per day)\nb. channel whitelist proxy: transfer only for given IBC channels (since EVERYONE is able to create new channels on existing IBC contracts, like for exploits)\nc. collection whitelist proxy and code id whitelist proxy: transfers only for given collections or cw721 code ids. This way an exploited, custom cw721 contracts will be avoided\nd. collection channels whitelist proxy: allowing creators to control whether their collection can be transferred and on which channels (=chains)\n\nII. Tools for builders\n\nArk Protocol supports the NFT community for going interchain. For making this happened, we have build libs, packages and tools for builders to build ICS721 utilities:\n\na. macros\nThe code for each outgoing and incentives contract is pretty slim. The reason for this is: each uses one of these 2 macros we have build:\n\n- [`packages/cw-ics721-context-derive`](https://github.com/arkprotocol/ics721-plus/tree/main/packages/cw-ics721-context/derive)\n Contains `cw_ics721_context_execute` and `cw_ics721_context_query` macros for generating ICS721 Context-based contracts. Examples here: [`cw-ics721-incoming-incentives`](https://github.com/arkprotocol/ics721-plus/blob/main/contracts/cw-ics721-incoming-incentives/src/msg.rs#L13-L20).\n\n- [`packages/cw-ics721-outgoing-proxy-derive`](https://github.com/arkprotocol/ics721-plus/tree/main/packages/cw-ics721-outgoing-proxy/derive)\n Contains `cw_ics721_outgoing_proxy_execute` and `cw_ics721_outgoing_proxy_query` macros for generating ICS721 proxies. Examples here: [`cw-ics721-outgoing-fee-proxy`](https://github.com/arkprotocol/ics721-plus/blob/main/contracts/cw-ics721-outgoing-fee-proxy/src/msg.rs#L12-L16).\n \nFor more details checkout the READMEs, starting here: https://github.com/arkprotocol/ics721-plus/blob/main/README.md\n\nb. packages\n\nThere are multiple packages for builders integrating in their contract:\n- whitelist and whitelist map (e.g. used in outgoing proxies)\n- multi test code for testing proxies and ICS721\n- example usages are shown in contracts folder\n\nAlso for the frontends we plan to provide components and js libs for builders to use.","images":["https://cdn.dorahacks.io/static/files/188cf80c3e8e5fc3bb82d01411bbdf66.png"],"team":"Core team: Mr T, art3mix, tatsen, m3rlin5ky, Crypto_Scotty_420\nStaff and Angels: Chauncey St John, Riley Petitt, BIG BOOMS, otte3000, MG, ecclesia, agentX10","github":"https://github.com/arkprotocol","demo":null,"video":null,"socialTwitter":"ArkProtocol","socialFacebook":null,"socialInstagram":null,"nftId":null,"haxonBuidls":[{"id":5814,"projectId":6497,"name":"Cosmos Game of NFTs: ICS721 transfers with taxes and incentives","track":"","bounties":["STARGAZE TRACK"],"haxonId":93,"haxonName":"Cosmos Game of NFTs - Interchain Hackathon","status":2,"haxonCreateAt":"2023/04/26 01:00:00 UTC"}],"kudoData":null,"bountyObjs":[],"badges":["{\"schema\":\"BADGE\",\"d\":{\"index\":\"b5809\",\"badgeType\":\"buidl\",\"path\":\"/buidl/6497/achievement/b5809\",\"ownerId\":6497,\"iconName\":\"b1\",\"updatedDate\":\"2023/07/31\",\"title\":\"Cosmos Game of NFTs - Interchain Hackathon\",\"detail\":\"Winner\",\"tag\":\"Hackathon\",\"imageUrl\":\"https://cdn.dorahacks.io/static/badge/b1_Cosmos~c32Game~c32of~c32NFTs~c32-~c32Interchain~c32Hackathon.webp\",\"shareImageUrl\":\"https://cdn.dorahacks.io/static/badge/b1_Cosmos~c32Game~c32of~c32NFTs~c32-~c32Interchain~c32Hackathon.jpg\",\"id\":5809,\"metaInfo\":{\"type\":\"HACKATHON_WINNER\",\"hackathonId\":93,\"title\":\"Cosmos Game of NFTs - Interchain Hackathon\"},\"createdAt\":1690797558,\"updatedAt\":1690797558,\"type\":1,\"subjectId\":93,\"metadata\":{},\"buidl\":6497}}","{\"schema\":\"BADGE\",\"d\":{\"index\":\"b5254\",\"badgeType\":\"buidl\",\"path\":\"/buidl/6497/achievement/b5254\",\"ownerId\":6497,\"iconName\":\"b0\",\"updatedDate\":\"2023/06/18\",\"title\":\"Cosmos Game of NFTs - Interchain Hackathon\",\"detail\":\"Participation\",\"tag\":\"Hackathon\",\"imageUrl\":\"https://cdn.dorahacks.io/static/badge/b0_Cosmos~c32Game~c32of~c32NFTs~c32-~c32Interchain~c32Hackathon.webp\",\"shareImageUrl\":\"https://cdn.dorahacks.io/static/badge/b0_Cosmos~c32Game~c32of~c32NFTs~c32-~c32Interchain~c32Hackathon.jpg\",\"id\":5254,\"metaInfo\":{\"type\":\"HACKATHON_PARTICIPATION\",\"hackathonId\":93,\"title\":\"Cosmos Game of NFTs - Interchain Hackathon\"},\"createdAt\":1687108802,\"updatedAt\":1687108802,\"type\":0,\"subjectId\":93,\"metadata\":{},\"buidl\":6497}}"]}}