USDC (USD Coin) vouchers are sometimes offered as promotions, rewards, or giveaways by crypto exchanges, wallet providers, or fintech companies. These vouchers can be redeemed for USDC, a stablecoin pegged to the US dollar. To find a free USDC voucher, check promotional events from platforms like Coinbase, Binance, or Crypto.com. Some DeFi projects also offer incentives for new users. Always verify the legitimacy of any voucher to avoid scams. Follow official social media channels and newsletters for potential giveaways. If you receive a voucher, redeem it through a supported platform and ensure you meet any terms and conditions.