Aleo CodeSprint v4.0: Build Zero-Knowledge dApps on Aleo

Join CodeSprint v4.0, an elimination-style hackathon to create innovative zero-knowledge (ZK) decentralized applications (dApps) on the Aleo blockchain. Form a team of 1-5 developers, pick a category, and compete for a share of 50,000 Aleo Tokens! Showcase your skils, solve real-world problems with privacy-first solutions, and join the Aleo ecoystem. Registerby August 5, 2025, and start building on August 6 and submissions are due August 27! For additional guidelines please read our official documents here.

Competition Structure

• Elimination Format: Teams compete to reach the finalist stage, with an X number of finalists selected.

• Finals: Finalists demo their dApps on Discord (August 27, 2025), followed by voting via Aleo GovBot to select the top 3 winners.

Reward Pool & Condition

1st Place: 20,000 Aleo Tokens
2nd Place: 15,000 Aleo Tokens
3rd Place: 7,000 Aleo Tokens
Finalists: 1,500 Aeo Tokens Each
Total: 50,000 Aleo Tokens

Conditions

• Tokens require mainnet deployment and maintenance.
• Paid within 30 days of August 29, 2025, with lockup period.
• Participants should consult legal advisors; organizers are encouraged to ensure legal compliance.

Edge Cases

• Ties in elimination voting are resolved by the judging panel.
• If insufficient qualified projects, consolation prizes may be awarded at judges’ discretion.

Timeline

July1, 2025: Registration Opens
August 5, 2025: Registration Close
August 6, 2025: Challenge Begins
August 27, 2025: Submissions Due
August 28- September 1, 2025: Team Review and Finalist Annoucement
September 3, 2025: Finalist Demos on Discord
September 5, 2025: Winners Announced

Categories

Choose one of three (3) tracks to build your ZKdApp:

• Private Compliance Stablecoin
  • Remittances and Cross-Border Payments
    • Family Remittances
    • Freelancer Payments
    • Cross-border Settlements 
• Fintech Infrastructure
  • Payroll
  • Merchant Payments
  • Company Treasury
  • Savings
• Verifiable Private States
  • Anonymous Membership
  • Identity & Credentials
• DeFi
  • Lending and Borrowing Protocols
  • Stablecoin-Denominated DeFi Yields
    • Staking
    • Collateralized Loans
    • DEX Liquidity Providing
    • Yield Farming and Liquidity Mining
    • Dollarization and Inflation Heding

Submission Guidelines

• Application Platform: Submia via Monday from here.
• Submission Platform: Submit via Monday form here.
• Testnet Tokens: Request testnet tokens for development.
• Mainnet Tokens: Finalists receive mainnet tokens for deployment.
• Requirements:
  • Build novel dApps on Aleo during the competition (August 5 to 27.)
  • Use any tech stack, but integrate with Aleo blockchain (see resources below).
  • Finalists must present a demo on Discord (September 3rd, 2025 to qualify for voting.
  • Credit all libraries/frameworks used; no pre-existing code/projects allowed.

Eligibility 

• Open to individuals or teams (1–5 members).
• All team members must meet eligibility criteria.
• Projects previously funded by Aleo grants are ineligible.
• Only new projects built during the competition are eligible.
• Team changes: Report dropouts to organizers; no new members post-registration.

Resources

• Aleo DevDocs: developer.aleo.org
• Leo Language Docs: docs.leo-lang.org
• zLearn Docs: zlearn.gitbook.io/zlearn
• zLearn Videos: YouTube Playlist
• Leo IDE: play.leo-lang.org
• Testing Leo Programs: developer.aleo.org/guides/leo/testing
• Token Standard: developer.aleo.org/guides/standards/token_registry
• Universal Wallet Adapter: developer.aleo.org/guides/wallets/universal_wallet_adapter
• Scaffolding Aleo App: developer.aleo.org/guides/sdk/create-leo-app/installation
• Provable SDK APIs: docs.explorer.provable.com
• Community Tools:
  • Amareleo (local devnet): developer.aleo.org/guides/amareleo/running
  • DokoJS (testing toolkit): github.com/venture23-aleo/doko-js
  • zkOracle (data oracle): docs.aleooracle.xyz
  • zPass (verifiable identity): docs.aleooracle.xyz
  • Awesome Aleo Resources: github.com/howardwu/awesome-aleo

Community Support

• Aleo Discord (Engineering Channels): discord.gg/aleo
• Aleo Telegram (Devs): t.me/+tS7UBLyd0co1Y2Zh

FAQ

• Can teams change tracks? Yes, anytime before submission; only the final submission counts.
• What if a team member drops out? Teams can continue with fewer members; report changes. No new members post-registration.
• Tech stack restrictions? None, as long as it integrates with Aleo.
• Can we use existing code? No, all code must be written during the competition. Libraries/frameworks allowed with credit.
• How does voting work? Aleo GovBot facilitates final voting by ambassadors based on Discord demos.
• What if there’s a tie? Judges decide tiebreakers.
• What if there aren’t enough qualified projects? Consolation prizes may be awarded at judges’ discretion.

Get Started!

• Innovation and Creativity
  Assessing how the project introduces fresh ideas and solutions using zk proofs on the Aleo Blockchain.
• Technical Implementation
  Evaluating project functionality, security, and code quality, including its integration with the Aleo Blockchain.
• User Experience (UX)
  Examining user-friendliness, accessibility, and the navigational ease of the project's interface, considering the time constraints of the hackathon.
• Practicality and Real-World Use Case
  Gauging the project's real-world applicability and potential impact on a global audience.
• zk Proof Usage
  Analyzing the effective use of zk proofs for scalability, privacy, and computational efficiency.