# Kaia RPC Node Asia's Blockchain for 400M+ Users 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. [Documentation](https://docs-rpc.crypto-chief.com/chains/kaia) [Get a free endpoint ](https://auth.crypto-chief.com/registration) ##### 12 M+ Requests per Day ##### 99.9 % Network Uptime ##### < 100 ms Average Response Time ##### 24/7 Technical Support ## Specification Kaia Network Technical characteristics and available endpoints ![Kaia (KAIA)](/img/protocols/kaia.svg) ### Kaia (KAIA) Mainnet & Testnet Support — Kairos Chain ID 8217 Protocol HTTPS / WSS Uptime 99.9% Block Time \~1s Consensus IBFT 2.0 EVM Compatible Yes 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. #### Key capabilities: - Access to 400M+ users through Kakao and LINE integration - Sub-second block time (\~1 second finality) - Transaction fees typically under $0.01 - EVM-compatible with Ethereum tooling support - 4,000 TPS capacity with room to scale - Native integration with Asian messaging super-apps - Account abstraction for gasless transactions - Strong focus on GameFi, NFTs, and consumer apps - Backed by major Asian tech companies #### 🔗 RPC Endpoints HTTPS `https://rpc.crypto-chief.com/kaia/{YOUR_API_KEY}` WSS `wss://rpc.crypto-chief.com/kaia/ws/{YOUR_API_KEY}` Replace {YOUR\_API\_KEY} with your actual API key from the dashboard. ## What is a Kaia RPC Node? 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. ### The Klaytn-Finschia merger 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:** - **400M+ users** — integrated with Kakao and LINE - **Fast finality** — \~1 second block time - **Low fees** — transactions under $0.01 - **High throughput** — 4,000 TPS capacity - **EVM compatible** — full Ethereum tooling support - **Asian focus** — optimized for Asian markets ### Messenger integration **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:** 1. IBFT 2.0 consensus for fast finality 2. Governance Council with major Asian companies 3. Service chains for application-specific scaling 4. Native integration with Kakao and LINE platforms 5. EVM compatibility for Ethereum developer experience ### Service chains 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. ## Technical Documentation Quick start for developers ### Supported RPC Methods Kaia supports standard Ethereum JSON-RPC methods plus Kaia-specific extensions: - **eth\_blockNumber** — current block number - **eth\_getBalance** — KAIA balance - **eth\_call** — call contract functions - **eth\_sendRawTransaction** — broadcast transactions - **eth\_getTransactionReceipt** — transaction status - **eth\_getLogs** — event logs - **klay\_gasPrice** — Kaia gas price - **klay\_accounts** — list accounts - **klay\_getAccountKey** — account key info - **eth\_subscribe** — WebSocket subscriptions ### Code Examples 💻 #### JavaScript (caver-js) — Kaia Connection: ``` 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); ``` 💻 #### Transfer KAIA: ``` 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); ``` 💻 #### Python (web3.py) — Kaia Setup: ``` 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}') ``` 💻 #### WebSocket — Monitor Kaia Activity: ``` 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); }); ``` ### Kaia Best Practices - **Use Caver-js:** Kaia's specialized SDK for full feature support - **Account Types:** Understand Kaia's different account key types - **Gas Optimization:** Leverage low fees but still optimize - **Messenger Integration:** Build for Kakao/LINE user acquisition - **Service Chains:** Consider service chains for high-volume apps - **Asian Markets:** Optimize for Asian user preferences and regulations ## Why choose us? Enterprise infrastructure for Asian Web3 ### 400M+ User Access Infrastructure built to handle potential traffic from Kakao Talk and LINE's combined 400M+ user base. ### Enterprise Reliability 99.9% uptime SLA with redundant architecture supporting mission-critical applications for major Asian companies. ### Kaia Analytics Monitor Kaia-specific metrics including messenger integration usage, service chain activity, and ecosystem growth. ### Asia-Optimized Nodes strategically deployed across Asia with focus on South Korea, Japan, Thailand, and Taiwan for minimal latency. ### Auto-Scaling Infrastructure scales to handle viral adoption through messenger integrations and GameFi launches. ### Regional Support 24/7 support with understanding of Asian markets, regulations, and Kakao/LINE ecosystem specifics. ## Examples of Use 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. #### Messenger Mini Apps Build applications integrated directly into Kakao Talk and LINE, giving instant access to 400M+ users without external downloads or complex onboarding. #### GameFi & Social Games Launch blockchain games within messengers leveraging Kaia's fast finality and low fees. Perfect for casual games and competitive tournaments. #### NFT Platforms Create NFT marketplaces and collections integrated with Kakao/LINE. Kaia's low fees enable affordable minting and trading for mass-market NFTs. #### Payments & Fintech Build payment solutions leveraging messenger integration for peer-to-peer transfers, merchant payments, and remittances across Asia. #### E-commerce & Marketplaces Launch e-commerce platforms within messengers using Kaia for payments and loyalty programs. Tap into Asian social commerce trends. #### DeFi for Asia Build DeFi protocols optimized for Asian markets with messenger integration for easy access and familiar UX for mainstream users. ## Got questions? we are here to help ## What is Kaia? Kaia is Asia's leading blockchain formed from the merger of Klaytn (Kakao) and Finschia (LINE), with integrated access to 400M+ users across Kakao Talk and LINE. ## What happened to Klaytn? Klaytn merged with Finschia in 2024 to form Kaia. KLAY tokens were migrated to KAIA tokens at a 1:1 ratio. ## How does Kaia integrate with Kakao and LINE? Kaia provides infrastructure enabling blockchain applications to run directly within Kakao Talk and LINE messengers, similar to how mini-apps work in WeChat. ## Is Kaia EVM compatible? Yes, Kaia is fully EVM-compatible. Deploy Ethereum smart contracts using Solidity, and use tools like Hardhat, Remix, and Foundry. ## How much do Kaia transactions cost? Kaia transaction fees are typically less than $0.01, making it one of the most cost-effective blockchains for consumer applications. ## How fast is Kaia? Kaia produces blocks approximately every 1 second with immediate finality through IBFT 2.0 consensus, handling 4,000+ TPS. ## What are Service Chains? Service Chains are application-specific sidechains on Kaia that can customize parameters while remaining connected to mainnet for security. ## Can I use web3.js or ethers.js with Kaia? Yes, but caver-js (Kaia's specialized SDK) is recommended for full access to Kaia-specific features like account key types. ## Do you support Kaia testnet? Yes, we provide RPC access to both Kaia mainnet (Chain ID 8217) and Kairos testnet for development. ## What companies back Kaia? Kaia is backed by Kakao (South Korea's largest internet company) and LINE (Japan's leading messenger), plus a Governance Council of major Asian corporations. ## Pricing that grows with your needs. ### Free Start building on Web3 — no credit card. ##### $0 - 5 reqs/sec RPC - 5 reqs/min Unified API - 1 req/day AML - Ultimate chains - WSS, Statistics - Community support [Get started ](https://auth.crypto-chief.com/registration) ### Pay for use Flexible pay-as-you-go for any workload. ##### From $10 - 400 reqs/sec RPC - 300 reqs/min Unified API - 5 reqs/sec AML - EventStream - Ultimate chains - WSS, Whitelists, Statistics - Support portal [Get started](https://auth.crypto-chief.com/registration) ### Subscription From $500 monthly plus 20% extra value. ##### From $500 - 400 reqs/sec RPC - 300 reqs/min Unified API - 5 reqs/sec AML - EventStream - Ultimate chains - WSS, Whitelists, Statistics - Support portal [Get started ](https://auth.crypto-chief.com/registration) ### Enterprise Tailored solution for expert builders ##### Custom terms All Subscription features plus: - Flexible rate limits - Engineering team support - Custom SLA - Personal manager [Contact Sales ](/contact/)