tl;drMastercard Crypto Credential is expanding to self-custody wallets, replacing long wallet addresses with verified, username-style aliases.Polygon is the first blockchain network to natively support this functionality, chosen for its speed, reliability, and payments-focused architecture.Mercuryo will onboard verified users and issue credentials, while Polygon provides the instant, low-cost infrastructure required for global-scale identity and payments.Together, this brings self-custody int...