How to pay: prepare USDC in three steps
Step 1 · Pick your route
I use a self-custody wallet
More control: you hold the keys, but back up your seed phrase carefully.
Suggested Exchanges
Binance
The world's largest cryptocurrency exchange.
OKX
A leading global cryptocurrency exchange.
Bitget
Top global exchange for copy trading and spot.
Coinbase
US-based public company and compliant exchange.
Kraken
Secure, reliable exchange established in 2011.
Bitstamp
The oldest compliant exchange in Europe.
Suggested Wallets
Binance Wallet
Official Web3 wallet for multi-chain assets.
OKX Wallet
Powerful multi-chain wallet supporting 50+ chains.
Bitget Wallet
Global multi-chain wallet for DeFi and NFT.
MetaMask
The most popular browser extension wallet.
Phantom
User-friendly wallet for Solana and more.
Rainbow
Beautifully designed wallet for Ethereum assets.
Step 2 · Add USDC (wallet route)
- Install a wallet app, then finish the backup and security checklist.
- Buy USDC with fiat or withdraw from your exchange into the wallet address.
- Confirm the network (e.g. Base or Ethereum mainnet) to avoid the wrong chain.
Step 3 · Return and complete the x402 payment
When the page responds with 402, follow the instructions, send the one-off payment, and the content unlocks automatically.