# About Join the ultimate developer's playground in Bangkok as you gear up for Devcon 2024. [sub0 RESET](https://sub0.gg/) is a 3-day conference featuring web3 innovations behind the creators of the Polkadot network. The hacker space will feature challenges for all levels and a chance to win hacker merch. ## Challenges and Rewards Complete a challenge from the challenge board and come to the devrel booth to claim your exclusive merch pack. Hackers with the most challenges completed at the end of the day will be awarded a GameBoy Color or a Flipper Zero. Read more about these challenges here: https://github.com/JoinWebZero/sub0-challenges  Want to level up ? Hack on some of these tracks below for some cash prizes. **Submissions due at 5PM on November 11th.** # Tracks ## ink! dApp track 👉 Completed the workshop challenges and ready to level up? The ink! dApp track is open for you to submit your dApp ideas that meet the following criteria: - Must be deployed on Paseo - Must utilize services from other chains on the network (e.g. AssetHub, Core Time, People) - Must have a UI that provides a clear user journey Any submission that meets this criteria is eligible for $150 USDC prize. ## Cere Network 👉 Hack on [Cere Network](https://www.developer.cere.network/) (1st place 1250 USDT, 2nd place 750 USDT, 3rd place 500 USDT) Integrate Cere Network's decentralized data infrastructure in your application. Here are some ideas: **Image & video processing** - Privacy-preserving image classification - Sort and filter through thousands of pictures using AI; But completely secure & privacy-preserving. - Data & video compression/conversion **Consumer storage app (web-based)** - Next-gen Google drive - Decentralized version of WeTransfer **Video streaming:** - Decentralized Netflix - Token-based video streaming e.g. Cere’s Telegram Media Bot - Back-end: https://github.com/cere-io/integration-telegram-app-bot - Front-end: https://github.com/cere-io/integration-telegram-app - Video Education platform **Infra tooling** - Decentralized Docker Container Image Registry Find more details on resources and tips [here](https://cere.notion.site/Cere-x-Sub0-Challenge-2-500-USDT-137d800083d680ffa66dc3df70432bd7#137d800083d680148b01d2be099086e9) ## Tangle 👉 Hack on [Tangle's DeFi challenges](https://github.com/tangle-network/sub0-tangle-blueprint-challenges). ## Bifrost 👉 Hack on [Bifrost challenges](https://docs.google.com/document/d/1-SI_zaauZ_DWUPjLeikxy8cpxq3Mge0p7EmmmqK6XAQ/edit?tab=t.0). **Topic 1: Build anything on top of Bifrost XCM** The only restriction for this topic is to call xcm_send on Bifrost-Polkadot. You're free to build any use case on top of it. This can involve a series of calls or a simple call between parachains. However, calling between Bifrost and Ethereum via Snowbridge is recommended. Key points: - Call xcm_send on Bifrost, do any cases as you want. **Topic 2: Liquid Staking Router (500 BNC)** Build a liquid staking router that allows users to cross DOT from a source chain and stake with Bifrost vDOT in just one click. For instance, this could involve batching DOT cross-chain transfers from the Relay-chain to Bifrost, minting DOT to vDOT, depositing vDOT into LoopStake with 2x leverage, or cross-chain depositing vDOT into Hydration Omnipool. Build at least 2 use cases in Bifrost-Polkadot and 1 case in cross-chain scenario. Demonstrate the process in a production environment (wss://hk.p.bifrost-rpc.liebi.com/ws). **Topic 3: Leverage off SLPx (800 BNC)** You can build novel applications under this topic by integrating SLPx. SLPx is a set of SDKs deployed on multiple chains, allowing various use cases to integrate with Bifrost liquid staking. Key points: - Develop in an environment supported by SLPx, - About SLPx: https://docs.bifrost.io/builders/liquid-staking-x-slpx/overview Integrate with SLPx: - https://docs.bifrost.io/builders/liquid-staking-x-slpx/deployable-network - https://github.com/bifrost-finance/slpx-contracts - For inspiration: [omni.ls](https://omni.ls/) # Key dates and times **Saturday, Nov. 9th** - 🚀 11:30AM: Bounties announced and hacking officially starts - 📆 3-4PM: Office hours **Sunday, Nov. 10th** - 📆 11:30-1PM: Office hours - 📆 3-4PM: Office hours **Monday, Nov. 11th** - 📆 11:30-1PM: Office hours - 📆 3-4PM: Office hours - 🔔 5PM: Submissions are due 🔔 - 7:30PM: Winners announced