Connect to Kaia, the merged Klaytn and Finschia blockchain powering Kakao and LINE. Access 400M+ users across Asia with sub-second finality and minimal fees.
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Mainnet & Testnet Support — Kairos
Kaia is Asia's leading Layer 1 blockchain, born from the strategic merger of Klaytn (backed by Kakao) and Finschia (backed by LINE). With integrated access to 400M+ users across Kakao Talk and LINE messaging platforms, Kaia represents the most significant blockchain-messenger integration in Asia, combining proven technology with massive distribution.
https://rpc.crypto-chief.com/kaia/{YOUR_API_KEY}
wss://rpc.crypto-chief.com/kaia/ws/{YOUR_API_KEY}
Replace {YOUR_API_KEY} with your actual API key from the dashboard.
Access Asia's largest blockchain ecosystem
A Kaia RPC node provides applications with access to the merged Klaytn-Finschia blockchain, enabling integration with Kakao and LINE's massive user bases. Kaia's EVM compatibility combined with messenger integration creates unique opportunities for Web3 applications targeting Asian markets.
In 2024, Klaytn (Kakao's blockchain) and Finschia (LINE's blockchain) merged to form Kaia, creating Asia's largest Web3 ecosystem. This merger combined Klaytn's DeFi expertise with Finschia's NFT focus, while integrating with Kakao Talk (South Korea's dominant messenger) and LINE (Japan's leading messenger).
Kaia advantages:
Kakao Talk (170M+ users in South Korea) and LINE (230M+ users in Japan, Taiwan, Thailand) serve as super-apps — combining messaging with payments, shopping, and services. Kaia's integration enables blockchain features directly in these messengers.
This integration removes the biggest barrier to Web3 adoption in Asia — users can interact with blockchain applications without leaving their familiar messenger environment or managing complex wallets.
Kaia architecture:
Kaia supports service chains — application-specific sidechains that can customize parameters like block time, governance, and gas policies while remaining connected to Kaia mainnet for security and asset transfers.
Quick start for developers
Kaia supports standard Ethereum JSON-RPC methods plus Kaia-specific extensions:
const Caver = require('caver-js');
// Caver is Kaia's specialized SDK (fork of web3.js)
const caver = new Caver('https://rpc.crypto-chief.com/kaia/YOUR_API_KEY');
// Check connection
const isConnected = await caver.rpc.net.isListening();
console.log('Connected to Kaia:', isConnected);
// Get KAIA balance
const address = '0xYourKaiaAddress...';
const balance = await caver.rpc.klay.getBalance(address);
console.log('KAIA Balance:', caver.utils.fromPeb(balance, 'KAIA'));
// Get block number
const blockNumber = await caver.rpc.klay.getBlockNumber();
console.log('Latest block:', blockNumber);const Caver = require('caver-js');
const caver = new Caver('https://rpc.crypto-chief.com/kaia/YOUR_API_KEY');
// Add account from private key
const sender = caver.wallet.keyring.createFromPrivateKey('0xYourPrivateKey...');
caver.wallet.add(sender);
// Create value transfer transaction
const tx = new caver.transaction.valueTransfer({
from: sender.address,
to: '0xRecipientAddress...',
value: caver.utils.toPeb('1', 'KAIA'), // 1 KAIA
gas: 25000
});
// Sign and send
const signed = await caver.wallet.sign(sender.address, tx);
const receipt = await caver.rpc.klay.sendRawTransaction(signed);
console.log('Transaction hash:', receipt.transactionHash);from web3 import Web3
# Kaia is EVM-compatible so web3.py works
w3 = Web3(Web3.HTTPProvider('https://rpc.crypto-chief.com/kaia/YOUR_API_KEY'))
print('Connected:', w3.is_connected())
print('Chain ID:', w3.eth.chain_id) # 8217
print('Latest block:', w3.eth.block_number)
# Get KAIA balance
balance = w3.eth.get_balance('0xYourAddress...')
print(f'KAIA: {balance / 1e18}')const { ethers } = require('ethers');
// Kaia is EVM-compatible so ethers.js works
const provider = new ethers.WebSocketProvider('wss://rpc.crypto-chief.com/kaia/ws/YOUR_API_KEY');
// Monitor new blocks (~1 second)
provider.on('block', async (blockNumber) => {
const block = await provider.getBlock(blockNumber);
console.log(`Kaia block ${blockNumber}: ${block.transactions.length} txs`);
});
// Monitor token transfers
const tokenAddress = '0xKaiaTokenContract...';
const filter = {
address: tokenAddress,
topics: [ethers.id('Transfer(address,address,uint256)')]
};
provider.on(filter, (log) => {
console.log('Token transfer:', log);
});Enterprise infrastructure for Asian Web3
Infrastructure built to handle potential traffic from Kakao Talk and LINE's combined 400M+ user base.
99.9% uptime SLA with redundant architecture supporting mission-critical applications for major Asian companies.
Monitor Kaia-specific metrics including messenger integration usage, service chain activity, and ecosystem growth.
Nodes strategically deployed across Asia with focus on South Korea, Japan, Thailand, and Taiwan for minimal latency.
Infrastructure scales to handle viral adoption through messenger integrations and GameFi launches.
24/7 support with understanding of Asian markets, regulations, and Kakao/LINE ecosystem specifics.
Build for Asian markets on Kaia
Kaia's integration with Kakao and LINE enables Web3 applications to reach hundreds of millions of users across Asia's most popular messaging platforms.
Build applications integrated directly into Kakao Talk and LINE, giving instant access to 400M+ users without external downloads or complex onboarding.
Launch blockchain games within messengers leveraging Kaia's fast finality and low fees. Perfect for casual games and competitive tournaments.
Create NFT marketplaces and collections integrated with Kakao/LINE. Kaia's low fees enable affordable minting and trading for mass-market NFTs.
Build payment solutions leveraging messenger integration for peer-to-peer transfers, merchant payments, and remittances across Asia.
Launch e-commerce platforms within messengers using Kaia for payments and loyalty programs. Tap into Asian social commerce trends.
Build DeFi protocols optimized for Asian markets with messenger integration for easy access and familiar UX for mainstream users.
Start building on Web3 — no credit card.
Flexible pay-as-you-go for any workload.
From $500 monthly plus 20% extra value.
Tailored solution for expert builders
All Subscription features plus: