tabconf hackathon project: dlchess

<!-- All software-based projects submitted must be open source and freely available for public use -->  # 🚀 TABConf 6 Hackathon Submission ## Project Name: dlchess ### Team Members 👥 - @stutxo ### Project Description 📝 Betting on chess games with DLC's. I have an oracle server that provides the adaptor signatures to use in the bitcoin scripts which players will be able to spend depending on the outcome of a game using the lichess.com api. There is a taproot script leaf spend for: white win, black win, draw and game timeout (if the attestation server dies) Players can also use their combined keys to key spend the transaction if they collaborate ### Technical Implementation 💻 adaptor signatures with taproot spends. I am using the `schnorr_fun` library to create adaptor signatures to sign messages for the outcomes of a chess game via the lichess api. I create a taproot address that locks the funds and only allows white or black player to withdraw winnings if the oracle sends the signature for a white or black win. both plays sign a draw transaction that returns their funds if the draw signature is returned There is also a timeout script that the players can use to return funds if the oracle server dies ### User Experience & Design 🎨 For the hackathon, i created a script to simulate a game and test all spending paths, this could easily be made in to a frontend later ### Innovation & Creativity 💡 using taproot and adaptor sigs to create dlc's ### Potential Impact 🌍 can be used for any oracle style bitcoin contract, as long as you trust the oracle server ### Business Model 💼 Its peer to peer gambling so no real business model, its just for fun. ### Demo Video 🎥 https://www.loom.com/share/81e9b1ea378748848bd76f47c08129e9?sid=7a806031-d7c5-4144-a298-a84ef6bf6af8 ### GitHub Repository 📂 https://github.com/stutxo/dlchess ### Additional Resources (Optional) 📚 ### Future Plans 🔮 I plan to run the attestation server so it can be used by anyone as a nostr hidden service. Also plan to make a web frontend at some point so it can be played on the web ### Feedback for Organizers (Optional) 📣