Privacy is the primitive for the next generation of on-chain applications — especially in a world of autonomous agents. This track challenges you to build privacy-first systems on Solana, powered by MagicBlock's (Private) Ephemeral Rollups &amp; Payment API:<ul class="list-node"><li><a target="_blank" rel="noopener noreferrer nofollow" class="link" href="https://docs.magicblock.gg/pages/ephemeral-rollups-ers/how-to-guide/quickstart">Ephemeral Rollup</a> (ER)</li></ul><ul class="list-node"><li><a target="_blank" rel="noopener noreferrer nofollow" class="link" href="https://docs.magicblock.gg/pages/private-ephemeral-rollups-pers/how-to-guide/quickstart">Private Ephemeral Rollup</a> (PER)</li><li><a target="_blank" rel="noopener noreferrer nofollow" class="link" href="https://docs.magicblock.gg/pages/private-ephemeral-rollups-pers/api-reference/per/introduction">Private Payments API</a></li></ul> 👉 Think beyond wallets and balances — build systems where data, intent, and interactions remain private by default, while still being composable and verifiable. ⸻ 🧠 What we're looking for: Frontier Projects<ul class="list-node"><li>Private payments &amp; shielded transactions</li><li>Private DeFi (Auctions, Lending, Trading primitives)</li><li>Agentic commerce, Agent-to-agent, x402 APIs, MPP etc</li><li>and more ... find more ideas in our database for <a target="_blank" rel="noopener noreferrer nofollow" class="link" href="https://www.notion.so/24fc5a1ab4d68034988ae014fed28600?v=24fc5a1ab4d680b7b11d000c877544ec">RFPs</a>.</li></ul> ⸻ ⚡ Why Solana and Magicblock<ul class="list-node"><li><a target="_blank" rel="noopener noreferrer nofollow" class="link" href="https://docs.magicblock.gg/pages/ephemeral-rollups-ers/introduction/why">Low latency, zero fees at scale</a></li><li><a target="_blank" rel="noopener noreferrer nofollow" class="link" href="https://docs.magicblock.gg/pages/private-ephemeral-rollups-pers/introduction/onchain-privacy">Privacy, composability and security</a></li><li>Regulatory <a target="" rel="noopener noreferrer nofollow" class="link" href="https://docs.magicblock.gg/pages/private-ephemeral-rollups-pers/introduction/compliance-framework">compliance</a> and control</li><li>Built-in onchain <a target="_blank" rel="noopener noreferrer nofollow" class="link" href="https://docs.magicblock.gg/pages/tools/crank/introduction">automation</a> and <a target="_blank" rel="noopener noreferrer nofollow" class="link" href="https://docs.magicblock.gg/pages/templates/random-character-generator">randomness</a></li><li>Ready-to-Use <a target="_blank" rel="noopener noreferrer nofollow" class="link" href="https://docs.magicblock.gg/pages/private-ephemeral-rollups-pers/api-reference/per/introduction">Private Payment API</a></li></ul> ⸻ 🏆 Prize Breakdown (Total: $5,000)<ul class="list-node"><li>🥇 1st Place — $2,500</li><li>🥈 2nd Place — $1,500</li><li>🥉 3rd Place — $1,000</li></ul> ⸻ 🛠️ Judging CriteriaTechnology (40%)<ul class="list-node"><li>Effective use of ER, PER, or Private Payments API</li><li>Working demo</li><li>Quality of architecture and smart contract design</li></ul>Impact (30%)<ul class="list-node"><li>Solves a real-world problem</li><li>Clear market need</li><li>Potential for adoption and monetization</li></ul>Creativity &amp; UX (30%)<ul class="list-node"><li>Novel primitives, mechanisms, or UX</li><li>Smooth user experience</li><li>Clarity of how the system works</li></ul>⸻✅ Submission Requirements<ul class="list-node"><li>Working demo: Live deployment with successful MagicBlock integration</li><li>Code repository (GitHub): Publicly accessible</li><li>Short demo video (3 min): Problem → Solution → Demo</li></ul> ⸻ 👉 Bring privacy to Solana — with MagicBlock.

🔐⚡ Privacy Track — Colosseum Hackathon (Powered by MagicBlock, ST MY & SNS)