Vibe Coding Challenge: Build Confidential DeFi & RWA

​iExec Vibe Coding Challenge

​iExec is launching the Vibe Coding Challenge, an online builder challenge to create use cases built on Nox, the confidential smart contract layer of iExec.

​On top of Nox, iExec introduces Confidential Tokens, a wrapper that transforms any ERC-20 into a confidential, auditable asset.

​The goal is to build real applications that demonstrate how confidential and programmable financial logic can unlock new use cases in DeFi and Real-World Assets (RWA).

​Challenge Overview

​Build an application using:

• ​Nox protocol

• ​Confidential Tokens

​Your project should explore privacy-enabled use cases such as:

• ​DeFi applications

• ​Tokenization

• ​Real-world assets

​The objective is to create a working prototype that preserves privacy while remaining composable with existing DeFi ecosystems.

​Partners

​ChainGPT
Provides AI infrastructure for Web3, including:

• ​smart contract generation and auditing

• ​Web3 LLM tools

• ​on-chain data insights

​Free API credits are available for participants.

​TUM Blockchain
A leading blockchain student community connecting builders and researchers across Europe.

​Prize Pool

​Total: $1,500 in RLC

• ​1st: $750

• ​2nd: $500

• ​3rd: $250

​Timeline

• ​Pre-registration: March 25, 2026

• ​Submission starts: April 6, 2026

• ​Deadline: May 1, 2026

​Team Rules

• ​Teams up to 5 participants

• ​You can join or form a team via Discord

​How to Participate

1. ​Join the iExec Discord

2. ​Build your application (must work end-to-end, no mock data)

3. ​Integrate Confidential Tokens using Nox

4. ​Submit your project by posting on X with:

   • ​project description

   • ​demo video

   • ​GitHub repository

   • ​tag @iEx_ec and @Chain_GPT

​Example Ideas

• ​Private lending / borrowing protocols

• ​Confidential DeFi vaults

• ​Tokenized assets with private balances (stocks, bonds, RWAs)

• ​Institutional-grade DeFi applications with compliance

​Deliverables

• ​Public GitHub repository with:

  • ​full open-source code

  • ​documentation and README

  • ​functional front-end

• ​Demo video (max 4 minutes)

​Evaluation Criteria

• ​Functional end-to-end application (no mock data)

• ​Deployment on Arbitrum or Sepolia

• ​Use of Confidential Tokens and Nox

• ​Real-world relevance in DeFi / RWA

• ​Code quality and maintainability

• ​User experience

​Resources

• ​Docs: https://docs.iex.ec/nox-protocol

• ​Nox packages: https://www.npmjs.com/org/iexec-nox

• ​Wizard: https://cdefi-wizard.iex.ec/

• ​Demo: https://cdefi.iex.ec/

​Support

​All communication happens on the iExec Discord:
https://discord.gg/RXYHBJceMe

​Participants can:

• ​ask technical questions

• ​find teammates

• ​share ideas

• ​follow announcements