Solflare has launched a self-custodial crypto card for instant USDC spending.The Solflare Card is integrated with Google Pay and Apple Pay, enabling its use at over 100 million Mastercard merchants worldwide.Users' USDC balances remain securely stored in their wallets until the payment is made, with no additional fees or spending limits.Some users have experienced temporary access issues on Solflare due to Solana RPC disruptions, but their assets remain secure and visible on Solscan.