Mastercard is expanding its Crypto Credential program to include self-custody wallets, allowing users to transact using verified aliases instead of lengthy wallet addresses. The rollout will first take place on the Polygon blockchain, with Mercuryo handling identity verification and alias issuance. This approach aims to enhance security in crypto transactions by reducing the risk of errors associated with copying complex hexadecimal addresses. Raj Dhamodharan, Mastercard's EVP of blockchain and digital assets, emphasizes that this system will help build trust in digital token transfers. Once users are verified by Mercuryo, they can associate an easy-to-remember alias with their self-custody wallet or request a soulbound token on Polygon that confirms their identity. Marc Boiron, CEO of Polygon Labs, highlights that this partnership simplifies the self-custody process, making it more user-friendly. The initiative reflects a growing demand for secure crypto interactions that maintain users' control over their wallets. Mastercard's broader strategy in the crypto space includes launching debit cards with Kraken in Europe and teaming up with MetaMask for a self-custody payments card. In June, the company partnered with Chainlink to allow its three billion cardholders to purchase crypto directly on-chain, marking a significant leap into Web3. This collaboration involves several partners like Shift4 Payments and ZeroHash, which ensures liquidity for converting fiat to crypto.