Sub-Second Snowman EVM · Gasless Ready

Avalanche C-Chain Payment Gateway — Instant Finality USDC, USDT, EURC & AVAX

Avalanche C-Chain delivers true ~1-second deterministic finality without optimistic challenge windows, supporting native Circle USDC & EURC, Tether USDT, and AVAX at a flat 0.5% fee.

Open Free Avalanche Fuji (43113) Workspace 🧪 Interactive Checkout Sandbox ⚖️ Compare Gas & Finality 🌐 All 12 Networks
Chain ID / Scope43114 (Mainnet) / 43113 (Fuji Testnet)
Confirmation SLA1–2 seconds (deterministic Snowman)
Typical Network Gas~$0.015–$0.03 (paid in AVAX)
XPayr Split99.5% Merchant / 0.5% Fee

Avalanche C-Chain Settlement Architecture

Deterministic Irreversibility in ~1.5s

Ideal for in-person POS counters (/pos) and instant software/game delivery where waiting minutes for L1 blocks is unacceptable.

Native USDC + EURC Support

Settle USD and EUR stablecoins directly into your existing 0x EVM treasury wallet.

Supported Wallets & Exchange QR Behavior

Wallets: Core Wallet, Rabby, MetaMask, Ledger, Safe + Exchange QR
Fast C-Chain USDC/USDT/AVAX withdrawals across Coinbase, Binance, Bybit, and OKX.

Best-Fit Merchant Verticals

Gaming studios, fintech platforms, retail Crypto POS (/pos), and instant digital asset delivery.

Supported Assets on Avalanche C-Chain

Accept USDC → Accept USDT → Accept EURC → Accept AVAX →

API v1 Session Payload (avalanche)

Pin preferred_network: "avalanche" or omit it so buyers can switch freely across your enabled chains.

POST https://xpayr.com/api/v1/payments
Authorization: Bearer sk_test_your_workspace_key
Content-Type: application/json

{
    "amount": "149.00",
    "currency": "USD",
    "preferred_network": "avalanche",
    "preferred_token": "USDC",
    "order_id": "ord_avalanche_9041",
    "underpayment_tolerance_pct": 1,
    "webhook_url": "https://merchant.example.com/webhooks/xpayr",
    "metadata": {
        "network": "avalanche",
        "settlement_split": "99.5_pct_merchant_wallet"
    }
}
⚙️ Generate Code in 8 Languages 🔔 Webhook Event Schemas

Explore All 12 Supported Blockchain Rails

Solana Base (Coinbase L2) Arbitrum One Polygon PoS OP Mainnet (Optimism) TRON (TRC-20) BNB Smart Chain (BEP-20) Ethereum Mainnet (ERC-20) TON (The Open Network) Bitcoin (BTC) Circle Arc Network

Avalanche C-Chain Checkout FAQ

Does XPayr use Avalanche C-Chain or X-Chain?

XPayr uses Avalanche C-Chain (EVM Chain ID 43114), ensuring 100% compatibility with standard 0x wallets, MetaMask, Rabby, Core, and CEX C-Chain withdrawals.