Mastercard, Polygon Labs, and Mercuryo announced on November 18, 2025 that Mastercard Crypto Credential will extend to self‑custody wallets, with Polygon chosen as the initial blockchain network and Mercuryo as the first issuer to onboard verified users and create alias‑based credentials. The rollout introduces human‑readable, verified aliases (and optional soulbound tokens on Polygon) that users link to their self‑custody wallets to simplify transfers and reduce address‑copying errors.

The initiative brings a trusted verification layer into non‑custodial environments—retaining user control while improving trust and interoperability—leveraging Polygon Proof‑of‑Stake’s low fees, high throughput, and recent protocol upgrades for payments‑grade performance; Raj Dhamodharan of Mastercard says the move makes digital assets “more accessible” and Mercuryo will handle identity verification and credential issuance. Availability, issuer onboarding, and specific credential features will roll out per partner and local jurisdictional requirements.

Read More: Mastercard Launches Crypto Debit Card for Self-Custodial Wallets in Europe With Mercuryo Partnership

• Which users can access Mastercard Crypto Credential aliases on Polygon? — Initial access is via Mercuryo‑verified users and partners, rolling out across supported jurisdictions.
• What blockchain powers the verified alias system for self‑custody wallets? — Polygon Proof‑of‑Stake is the first network selected to power the rollout.
• Can users keep full control of their wallets while using verified aliases? — Yes; aliases link to self‑custody wallets while users retain full private‑key control.
• How does Mastercard Crypto Credential improve transfers for UK and global users? — It replaces long addresses with verified, human‑readable aliases to reduce errors and build trust across jurisdictions.