Kaia RPC: Asia's Stablecoin Settlement Layer

Kaia is an EVM-compatible Layer 1 blockchain purpose-built for stablecoin settlement and onchain finance across Asia. With 1-second block times, instant finality, and native USDT support across six countries, Kaia is positioning itself as the infrastructure layer for the next generation of Asian digital finance.

What Kaia actually is

Kaia is a Layer 1 blockchain designed specifically for stablecoin-based financial services. Unlike general-purpose chains that bolt DeFi onto a broad platform, Kaia's entire architecture is optimized for remittances, payments, FX, yield, and tokenized assets.

Key specs:

• Chain ID: 8217 (0x2019)
• Block time: 1 second
• Finality: Instant
• Gas token: KAIA
• EVM compatibility: Full
• Native stablecoins: USDT, KRW, JPYC, IDRX, IDRP

The architecture combines several key innovations:

1. Stablecoin-first design: Native support for USDT across Korea, Taiwan, Thailand, the Philippines, Indonesia, and India. This isn't just bridged USDT — it's deeply integrated into the chain's infrastructure.

2. LINE integration: Partnership with LINE NEXT brings Kaia into the Unifi super-app ecosystem, reaching hundreds of millions of users across Asia. This is real-world distribution, not just theoretical adoption.

3. Gas fee delegation: Kaia supports gasless transactions and fee delegation programs, making it easier for applications to onboard users who don't hold the native token.

4. Onchain finance stack: A complete suite of financial engines including Unifi (distribution), SuperEarn (yield), Ratio (FX orchestration), AlphaSec (derivatives), Hann Finance (minting), and Galactica (RWAs).

The RPC: Standard Ethereum JSON-RPC

Because Kaia is fully EVM-compatible, it exposes the standard Ethereum JSON-RPC interface. If you've built against Ethereum, you already know how to query Kaia.

# Chain ID
curl -s -X POST https://rpc.swiftnodes.io/rpc/kaia?key=YOUR_API_KEY \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}'
# -> {"jsonrpc":"2.0","id":1,"result":"0x2019"}

# Latest block
curl -s -X POST https://rpc.swiftnodes.io/rpc/kaia?key=YOUR_API_KEY \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'
# -> {"jsonrpc":"2.0","id":1,"result":"0xd87a9b1"}  # ~227M

The core methods work as expected:

Gas fees and block structure

Kaia's gas fees are consistently low, typically around 27-30 gwei for standard transactions. With 1-second block times and instant finality, transactions confirm almost immediately.

# Gas price
curl -s -X POST https://rpc.swiftnodes.io/rpc/kaia?key=YOUR_API_KEY \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_gasPrice","params":[],"id":1}'
# -> {"jsonrpc":"2.0","id":1,"result":"0x68e5c8800"}  # ~27.5 gwei

# Block with transactions
curl -s -X POST https://rpc.swiftnodes.io/rpc/kaia?key=YOUR_API_KEY \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_getBlockByNumber","params":["latest",false],"id":1}'
# -> {"jsonrpc":"2.0","id":1,"result":{"number":"0xd87a9b1","timestamp":"0x6a9bafb3","transactions":[...]}}

The 1-second block time is faster than most EVM chains, and the instant finality means you don't need to wait for multiple confirmations. This is critical for payment and remittance applications where speed is a requirement.

What makes Kaia different from other EVM chains

Kaia is often compared to other Asian-focused chains, but its approach is unique:

• Ethereum has the largest ecosystem but high fees and slow blocks. Kaia offers similar EVM compatibility with 1-second blocks and instant finality, specifically optimized for stablecoin finance.
• Polygon is a high-throughput chain with low fees, but Kaia has deeper integration with Asian stablecoins and the LINE ecosystem.
• Avalanche uses a different consensus mechanism and has multiple chains. Kaia is a single chain with a unified focus on Asian stablecoin settlement.
• BSC is EVM-compatible with fast blocks, but Kaia has native USDT support across six Asian countries and deeper institutional partnerships.

From a developer perspective, Kaia's key advantage is that you can deploy existing Ethereum contracts without modification, but you're building on a chain with real distribution through LINE and native stablecoin infrastructure across Asia.

Gas fee delegation: Building gasless applications

One of Kaia's standout features is gas fee delegation. Unlike most chains where users must hold the native token to pay for gas, Kaia allows applications to sponsor gas fees on behalf of their users.

This is critical for onboarding in emerging markets where users may not have access to KAIA but need to make stablecoin payments. The fee delegation API allows you to:

• Pay gas fees for your users transparently
• Create gasless onboarding experiences
• Sponsor specific types of transactions (e.g., all USDT transfers)

// Kaia supports EIP-712 style fee delegation
// The fee payer (your application) signs a transaction
// The user signs the same transaction
// Both signatures are submitted together

This eliminates the biggest friction point in crypto adoption: requiring users to acquire a native token before they can use your application.

The Asian stablecoin ecosystem

Kaia has achieved something rare in crypto: real-world stablecoin adoption across multiple countries. Native USDT is live in:

• South Korea — the largest crypto market in Asia
• Taiwan — growing DeFi adoption
• Thailand — active remittance corridor
• The Philippines — major remittance recipient
• Indonesia — largest economy in Southeast Asia
• India — massive crypto user base

This isn't just bridged USDT sitting in a smart contract. It's integrated into real payment rails, with partnerships like the KB Kookmin pilot for KRW stablecoin issuance and cross-border remittances.

Gaming is another major adoption channel. Titles like Lord Nine and Rohan2 Global have 30% of in-game payments settled in stablecoins on Kaia. This is real transaction volume, not just marketing claims.

eth_getLogs and range caps

Like most high-throughput chains, Kaia imposes range caps on eth_getLogs to prevent abuse. If you're querying logs for a contract that emits a lot of events, you'll need to chunk your queries into smaller block ranges.

A safe default is 10,000 blocks per query. If you need to scan a wider range, loop through it in chunks:

const FROM_BLOCK = 220000000;
const TO_BLOCK = 227000000;
const CHUNK_SIZE = 10000;

for (let i = FROM_BLOCK; i < TO_BLOCK; i += CHUNK_SIZE) {
  const logs = await provider.getLogs({
    address: "0x...",
    fromBlock: i,
    toBlock: Math.min(i + CHUNK_SIZE - 1, TO_BLOCK),
  });
  // Process logs
}

Trace methods and archive access

Kaia's standard RPC does not support trace_block, trace_transaction, or debug_traceCall. These methods require an archive node with tracing enabled, which is a different (and more expensive) infrastructure setup.

If you need internal transactions, contract creation traces, or state diffs at a specific block, you'll need to use a dedicated archive provider or query the chain's block explorer API.

For most dApp use cases — reading balances, submitting transactions, querying logs — the standard RPC is sufficient.

The short version

Kaia is an EVM-compatible Layer 1 focused on stablecoin settlement and onchain finance in Asia. Chain ID 8217, 1-second blocks, instant finality, gas fees around 27-30 gwei. Standard Ethereum JSON-RPC — if you've built on Ethereum, you already know how to query it. Uses KAIA for gas, with native USDT support across six Asian countries.

For developers building payment, remittance, or stablecoin applications targeting Asian markets, Kaia offers real infrastructure with real adoption. Your existing Solidity contracts work without modification, and the chain's integration with LINE and regional stablecoins provides distribution that most chains can only aspire to.

For reliable Kaia RPC access across load-balanced nodes, grab a free API key and point your app at:

https://rpc.swiftnodes.io/rpc/kaia?key=YOUR_API_KEY