ETHKyiv 2025

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## Build a Privacy-First Application Using INTMAX

**Use INTMAX to create a real-world application where privacy, scalability, or ultra-low gas fees unlock new possibilities.**

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### 🧠 **Why INTMAX?**

INTMAX is a zkRollup that offers:

- 🔒 **Full privacy**: Sender, receiver, and amount are hidden by default.
- ⚡ **Ultra-fast settlement** with minimal on-chain footprint.
- 🪙 **Constant ultra-low fees** — ideal for microtransactions and frequent activity.
- 👻 **Stateless architecture**: No account needed to start using it.

Hackers can build apps that simply **can’t be done on other chains** due to fee or privacy limitations.

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### 🧩 **Suggested Directions**

Pick any of the following, mix & match, or create something totally new — as long as it makes INTMAX shine.

### 🧾 **1. Privacy-First Payments (Core Theme)**

> Build a simple yet powerful crypto payment experience using INTMAX.
> 

Examples:

- Peer-to-peer wallet with **invisible tx history**
- Merchant-facing **checkout module**
- zkReceipts: verifiable payment proofs without revealing details
- Pay & verify with zero address or token exposure

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### 🌐 **2. Cross-Border Stablecoin Transfers**

Create a remittance or international payout tool using privacy-preserving transfers and **stablecoins on INTMAX** (ITX, bridged USDC/DAI, etc.).

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### 🪙 **3. Scalable Microtransactions**

Use INTMAX's negligible fees to build:

- Per-click, per-second, or per-API-call payment models
- Streaming payments for music, content, compute time

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### 🎯 **4. zk-Based Subscription Models**

Design recurring payments or subscriptions (daily, weekly, monthly) using **zkProofs of payment**, without revealing user identity or usage history.

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### 💸 **5. Privacy-Preserving Donations**

Enable anonymous donations to individuals, NGOs, DAOs, or creators — without exposing wallet addresses or on-chain records.

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### 🧰 **6. Merchant Tooling on L2**

Create dashboards, invoicing, receipts, or tax tools for small businesses using **INTMAX-based private payments**.

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### 📶 **7. Offline-Friendly Crypto Payments**

Design a payment mechanism (e.g., QR codes, one-time secrets, NFC) that works offline and is settled privately on INTMAX when online.

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### 🤖 **8. AI Agents with Autonomous Crypto Payments**

Build a bot or AI agent that can:

- Make or receive INTMAX payments autonomously
- Pay for services like APIs, datasets, or compute cycles
- Use zk identity/payment proof to interact with other agents or humans

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### 🛡️ **9. Conditional Payments for Insurance Use Cases**

Use INTMAX to build private, conditional payment systems for things like:

- Health or travel insurance
- Automatic payouts upon verified (private) conditions
- zkProof-based payout logic (e.g., proof of delay, damage, or eligibility)
    
    Maintain full privacy of both the user and event conditions, while enabling reliable automation.
    

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### 🧰 **What We Provide**

- [Developer Docs (Gitbook)](https://intmax-wallet.gitbook.io/intmax-developers-hub)
- SDK & JS wallet integration code
- Direct chat with our team during the hackathon

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### 🏆 **Judging Criteria**

- **Impact** – Does this solve a real problem or enable new types of apps?
- **Creativity** – Is the idea novel or does it combine features in a new way?
- **INTMAX Integration** – Does it use our protocol’s unique strengths (privacy, statelessness, low fees)?
- **Polish** – Is the UX smooth and usable?

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### 💥 **Bonus Points For**

- Bridging or integrating with other projects at ETH Kyiv (e.g., EVM projects)
- Showing clear benefits of **privacy** in your UX
- Using **zkProofs** for receipts, access, or identity

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### 📬 Questions?

Ping the INTMAX team at the venue or contact us at：

Telegram chat, ETHKyiv channel -  https://t.me/c/1783523395/1

Discord - https://discord.gg/Fs85pjvEKB

Best on INTMAX

Bonus Winner on INTMAX

1st Place

2nd Place

3rd Place

4th Place

# Peanut Trade

You should build a constant-product DEX with some additional features which should be optional on pool deployment:

1. **Dynamic Swap Fee**, which increases at high volatility
2. **Snipe Protection**, which means high swap fee on pool deployment which decreases over time (either linearly or exponentially)
3. **Launchpad**, which lets the token dev to create a pool with only one token without prodividing WETH/stables
4. The protocol should be as **gas-optimized** as possible, meaning a one-hop swap on a pool without features should take ~150k gas, meanwhile a one-hop swap on a pool with all features enabled should take ~200k gas.
5. **UI** for pool deployment, position managing & swapping is welcome.

Best Anti-Sniping DEX

# **Sniper-Cashbackers on Base** 🤑

> *“Let bots pay for alpha. Let creators farm their greed.”*
> 

## 🧠The Premise:

Token creators get sniped — and usually walk away with nothing, while sniper bots farm all the upside.

Let’s fix that.

Build a system that lets **token creators auction off the right to snipe** their tokens.

Snipers compete with **ETH bribes** to get included early. Bribes go directly to the token creator. 
More bots ⇒ more bribes ⇒ more profit for the creator. Maximize chaos. Monetize attention.

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## 🔧 What You’ll Build:

### 1. 🔫 Telegram Bot (for Snipers)

Let snipers:

- `/register`: create a wallet (PK stored backend-side)
- View wallet balances (ETH + tokens)
- `/snipe <token_address> <bribe_in_ETH>`
    
    → Submit a desired token address (which is not live yet) and offer a bribe to be included in the snipe bundle
    

On LP_ADD (tx signal will be shared from RPC component):

- Bot constructs bundle:
    - TX 0: LP_ADD from token creator
    - TX 1...N: sniper swaps
        - UniV2 swap buy of desired Token (unlimited slippage)
        - Bribe (ETH) sent to token creator (LP_ADD tx origin) as internal transfer.
        - Sniper Buy swaps must be strictly sorted by bribe size. 
        How to sort: each tx has gasPrice = previous - 1 wei, so Base sequencer will respect the ordering.
- Final bundle = `[LP_Add, Sniper1, Sniper2, ..., SniperN]`
- Submit to Base sequencer

### 2. 🤑 Custom RPC (for Token Creators)

Token creators use a custom RPC endpoint in their Metamask/Rabby:

- Non-LP_ADD txs → pass through to Base sequencer normally
- If LP_Add detected:
    - Forward to Telegram bot backend
    - If active sniper bids exist → trigger bundle build
    - Sniper bribes go directly to creator

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## ⚒️ Tech Stack

- Any language
- Preferred: **Rust** / **Go** for backend & RPC proxy (but not required)
- Constant Product Pool (uniV2-like dex)
- Base network (or Base testnet)

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## 📬 Contact Us

If you have any questions about the task — don’t hesitate to DM [@apadenko](https://t.me/apadenko) on Telegram.

Best of 3 by Kolibrio

# The Graph Builders DAO
**1. Has to be synced on studio or the graph network (not alchemy or goldsky)
2. Have to submit the code
3. Have to submit the dev query endpoint from studio**

Best New Subgraph Build

### **About**

[Nitrolite](https://www.yellow.org/) is a powerful state channel framework that enables developers to build high-performance decentralized applications with near-instant finality and minimal gas costs. Yellow invites developers to explore the capabilities of ERC-7824 and the Nitrolite Protocol, contributing or utilizing to the Nitrolite SDK

### **Qualification Requirements**

- Integrate Nitrolite SDK: Demonstrate the use of ERC-7824 in facilitating state channel mechanisms within your application
- Or contribute improvements, issue resolution to the protocol repository nitrolite and clearnode
- Provide a Working Demo: Submit a functional demonstration of your application, showcasing the integration
- Open Source Your Code: Ensure your project’s codebase is publicly accessible for evaluation

**Useful Links:**

- Workshop from ETHPrague: https://youtu.be/dF0SeIYbyJY?si=zvbcrdSzkYbhEbRC
- ERC-7824 — https://erc7824.org/
- Nitrolite Pragma Taipei 2025 — https://www.youtube.com/watch?v=FCpXOnprbSg
- Nitrolite TypeScript SDK — https://ethglob.al/e81do
- GitHub Clearnode — https://github.com/erc7824/clearnode

Best on Yellow

# Issue Fix / Protocol Improvement
**For meaningful contributions such as fixing GitHub issues, resolving bugs, or proposing improvements to ERC-7824 or Nitro.**

Protocol Contribution Track by Yellow

Issue Fix / Protocol Improvement

# Docs Improvements
**For helpful pull requests improving clarity, coverage, or structure of our documentation (Nitrolite SDK, Nitro Protocol, or ERC-7824).**

ETHKyiv 2025

ETHKyiv 2025

ETHKyiv 2025$39,000

ETHKyiv 2025

$11,000: Best on INTMAX

$10,500: ETHKyiv 2025

$8,500: Best on Yellow

$4,000: Best of 3 by Kolibrio

$2,500: Best New Subgraph Build

$1,000: Best Anti-Sniping DEX

$1,000: Protocol Contribution Track by Yellow

$500: Documentation Enhancement Track by Yellow

ETHKyiv 2025$39,000

ETHKyiv 2025

$11,000: Best on INTMAX

$10,500: ETHKyiv 2025

$8,500: Best on Yellow

$4,000: Best of 3 by Kolibrio

$2,500: Best New Subgraph Build

$1,000: Best Anti-Sniping DEX

$1,000: Protocol Contribution Track by Yellow

$500: Documentation Enhancement Track by Yellow