KodeChain Web SDK

The official KodeChain Web SDK for JavaScript and TypeScript. Build high-performance, secure decentralised applications on the KodeChain network with native support for dual-chain consensus and quantum-resistant cryptography.

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✨ Key Features

• ⚛️ Quantum-Resistant: Native implementation of ML-DSA-65 for post-quantum security.
• ⛓️ Dual-Chain Architecture: Seamless interaction with DPOS (Financial) and PBFT (Records/Processes) chains.
• 🏦 Smart Accounts: Hybrid accounts with cross-chain transfer capabilities and billing management.
• 📜 DVM (Dual Virtual Machine): Comprehensive tools for deploying and interacting with smart contracts.
• 🛡️ Type-Safety: Built with TypeScript for a robust developer experience.
• ⛽ Smart Gas: Automatic gas estimation and PBFT billing cycle management.

📦 Installation

Install the SDK using your favorite package manager:

# Using NPM
npm install @kodechain/sdk-ts

# Using Yarn
yarn add @kodechain/sdk-ts

# Using PNPM
pnpm add @kodechain/sdk-ts

🚀 Quick Start

Initialize the client and check node health in seconds:

import { KodeChainClient } from '@kodechain/sdk-ts';

// 1. Initialize Client
const client = new KodeChainClient({
  nodeUrl: 'http://34.28.74.25:8084',
  defaultConsensus: 'DPOS',
});

async function run() {
  await client.connect();
  
  // 2. Query Blockchain State
  const health = await client.getHealth();
  const height = await client.getBlockHeight();
  
  console.log(`Connected to KodeChain! Height: ${height} | Status: ${health.status}`);
}

run();

💡 Core Concepts

Dual-Chain Synergy

KodeChain operates two parallel chains to optimize for different use cases:

• DPOS (Delegated Proof of Stake): Optimized for fast financial transactions, token transfers (KDC), and staking.
• PBFT (Practical Byzantine Fault Tolerance): Optimized for critical records, immutable logs, and complex business processes that require immediate finality.

Quantum Security

Every account in KodeChain is protected by ML-DSA (Module-Lattice-Based Digital Signature Algorithm), making your assets and data safe even against future quantum computing threats.

🛠️ Usage Guide

1. Quantum Wallet Management

Create or import wallets with post-quantum security.

import { Wallet } from '@kodechain/sdk-ts';

// Create a new ML-DSA-65 wallet
const wallet = Wallet.createRandom(client);
console.log(`Address: ${wallet.address}`);

// Sign a message (Quantum-Resistant)
const signature = await wallet.sign("Secure data package");

2. Smart Contract Interaction

Deploy contracts or interact with existing ones using the DVM.

import { ContractFactory } from '@kodechain/sdk-ts';

const factory = new ContractFactory(client);
const contract = await factory.attach('0xContractAddress...', ABI);

// Call a state-changing function
const tx = await contract.call('transfer', ['0xRecipient...', '1000n'], {
  caller: wallet.address
});

// Query a view function
const balance = await contract.view('balanceOf', [wallet.address]);

3. Smart Account Operations

Manage hybrid balances and cross-chain transfers.

import { SmartAccountManager } from '@kodechain/sdk-ts';

const manager = new SmartAccountManager(client);
const account = await manager.getAccount('0xAddress...');

// Transfer KDC from DPOS to PBFT chain
await account.transferCrossChain('5000n', 'DPOS', 'PBFT');

// Register a critical record on PBFT
await account.registerCriticalRecord({
  type: 'AUDIT_LOG',
  data: { action: 'LOGIN', result: 'SUCCESS' }
});

📂 Examples

Visit the /examples directory for complete, runnable scripts:

| Example | Description | | :--- | :--- | | basic-usage.ts | Connection, node info, and health checks | | crypto-wallet.ts | Quantum keys and message signing | | staking-delegation.ts | Validator management and voting | | smart-account-example.ts | Advanced hybrid account features | | abicoder-usage.ts | Manual data encoding/decoding |

🤝 Contributing

We welcome contributions to the KodeChain SDK!

1. Fork the repository
2. Create your feature branch (git checkout -b feature/AmazingFeature)
3. Commit your changes (git commit -m 'Add AmazingFeature')
4. Push to the branch (git push origin feature/AmazingFeature)
5. Open a Pull Request

📄 License

Distributed under the MIT License. See LICENSE for more information.

🔗 Links & Resources

• Official Website: kodechain.site
• Developer Docs: docs.kodechain.site
• Explorer: explorer.kodechain.site
• Discord: Join our Community

Copyright © 2025 KodeChain Network. All rights reserved.