Available Contracts

The Midnight Contracts Wizard includes five production-ready smart contract templates. Each template provides complete functionality with privacy-preserving zero-knowledge circuits built in.

Contract overview

Tokenization Contract

7 ZK Circuits

A complete asset tokenization system with zero-knowledge privacy for investments and ownership tracking.

Features

Use cases

• Real estate tokenization - Fractional property ownership with private holdings
• Securities issuance - Confidential cap table management
• Private equity - Track investments without public disclosure
• Fundraising - Accept contributions with privacy guarantees

Example usage

import { TokenizationContract } from './managed/tokenization';
import { MidnightSetupAPI } from '@meshsdk/midnight-setup';

const contract = new TokenizationContract({
  name: "Property Token",
  symbol: "PROP",
  totalSupply: 1000000
});

const api = await MidnightSetupAPI.deployContract(providers, contract);

Staking Contract

8 ZK Circuits

A privacy-focused staking system with configurable rewards and lock periods.

Features

Use cases

• Network validation - Stake to participate in consensus
• Governance - Voting power based on private stake
• Yield generation - Earn rewards on locked assets
• Long-term incentives - Reward committed participants

Example usage

import { StakingContract } from './managed/staking';
import { MidnightSetupAPI } from '@meshsdk/midnight-setup';

const contract = new StakingContract({
  rewardRate: 0.05, // 5% annual
  lockPeriod: 30 * 24 * 60 * 60 // 30 days in seconds
});

const api = await MidnightSetupAPI.deployContract(providers, contract);

Identity Contract

1 ZK Circuit

A complete identity management system for privacy-preserving credential verification.

Features

Use cases

• KYC compliance - Verify identity without storing personal data
• Age verification - Prove age without revealing birthdate
• Credential validation - Check qualifications privately
• Gated access - Control access based on verified attributes

Example usage

import { IdentityContract } from './managed/identity';
import { MidnightSetupAPI } from '@meshsdk/midnight-setup';

const contract = new IdentityContract({
  issuer: "trusted-issuer-address",
  requiredAttributes: ["over18", "verified"]
});

const api = await MidnightSetupAPI.deployContract(providers, contract);

Oracle Contract

7 ZK Circuits

A decentralized oracle system with privacy-preserving data feeds.

Features

Use cases

• Price feeds - Private asset pricing for DeFi
• Weather data - Confidential environmental data
• Sports results - Private outcome verification
• IoT streams - Secure sensor data ingestion

Example usage

import { OracleContract } from './managed/oracle';
import { MidnightSetupAPI } from '@meshsdk/midnight-setup';

const contract = new OracleContract({
  feedId: "BTC-USD",
  updateInterval: 60, // seconds
  minSources: 3
});

const api = await MidnightSetupAPI.deployContract(providers, contract);

Lending Contract

7 ZK Circuits

A privacy-preserving decentralized lending protocol.

Features

Use cases

• DeFi lending platforms - Build private lending pools
• Peer-to-peer lending - Connect lenders and borrowers privately
• Collateralized loans - Secure loans with hidden collateral
• Credit lines - Establish private credit facilities

Example usage

import { LendingContract } from './managed/lending';
import { MidnightSetupAPI } from '@meshsdk/midnight-setup';

const contract = new LendingContract({
  collateralRatio: 150, // 150% collateralization
  interestRate: 0.08, // 8% annual
  liquidationThreshold: 120 // liquidate at 120%
});

const api = await MidnightSetupAPI.deployContract(providers, contract);

Combining contracts

You can select multiple contracts to build comprehensive applications.

DeFi platform example

Combine Tokenization + Oracle + Lending for a complete DeFi platform:

npx @meshsdk/midnight-contracts-wizard

? Select contracts to include:
  [x] Tokenization Contract
  [x] Oracle Contract
  [x] Lending & Borrowing Contract

This combination enables:

• Issue tokens representing assets
• Get real-time price feeds
• Enable collateralized borrowing

Governance example

Combine Staking + Identity for verified governance:

npx @meshsdk/midnight-contracts-wizard

? Select contracts to include:
  [x] Staking Contract
  [x] Identity Contracts

This combination enables:

• Stake tokens for voting power
• Verify voter eligibility
• Private vote counting

Technical details

Each contract template includes:

Next steps

• Project Structure - Understand generated files
• Midnight Setup - Deploy contracts to the network
• Usage - Generate your project

Related resources

• Compact Language Guide
• Midnight Network Documentation