Decentralized Identity: A Competitive Advantage in European Finance

It is an identity framework where individuals own, manage, and control their digital credentials without relying on a single central authority. In traditional centralized models, identity data sits with service providers or central databases. This approach lets users hold credentials in a digital wallet and share only what is necessary, backed by cryptographic proofs.

This model addresses several major problems: fragmented identity silos, repeated verification steps, elevated data breach risk, and limited user control.

Understanding how decentralized identity works starts with its foundational building blocks. Each component plays a distinct role in enabling user control, cryptographic trust, and portability across services.

Verifiable Credentials

These are digital, cryptographically signed credentials issued by trusted entities (like governments, employers, or universities) that prove facts about a person without exposing unnecessary data. They are tamper-proof and instantly verifiable.

Decentralized Identifiers (DIDs)

DIDs are unique, self-generated identifiers that are not tied to a central authority. Stored on a blockchain or distributed ledger, they contain no personal data. Instead, they point to cryptographic keys used for authentication.

Digital Identity Wallets

These are secure applications (mobile or cloud-based) where users store and manage their verifiable credentials. Users control what to share, when, and with whom.

Blockchain & Distributed Ledgers

This is the infrastructure layer that anchors DIDs and public keys. It provides immutability, transparency, and tamper resistance. No personal data is stored on-chain; only public identifiers and revocation registries are kept here.

The system relies on a three-party trust model:

• Issuer: A trusted entity (government, bank, university) that verifies a fact and issues a verifiable credential.

• Holder: The individual who receives and stores the credential in their wallet.

• Verifier: The service that checks the credential authenticity using the issuer's public DID and cryptographic signature, without contacting the issuer directly.

For example, a user completes KYC with one financial institution, receives a verifiable credential, stores it in their wallet, and reuses it to onboard with another service quickly.

The differences between these two approaches come down to who holds the data, how it's protected, and how portable it is across services and borders.

The original eIDAS framework, launched in 2014, aimed to bring consistency to digital identification and trust services. It made digital signatures and cross-border ID recognition possible, but only for public services. Financial institutions were largely left to navigate identity verification on their own.

eIDAS 2.0 changes that. It introduces a powerful new tool, the European Digital Identity (EUDI) wallet, and expands legal obligations to private sector players, including those in financial services. This wallet allows citizens and businesses to store and selectively share identity information securely, from proof of age and residency to bank account details and education certificates.

eIDAS 2.0 also provides a framework to converge (or tightly bind) payment and identity into a single, simple, and secure user interaction where the user never has to type a credit card number, expiration date, name, or billing address again, replacing unreliable autofill and vulnerable stored data from platform services and web browsers.

Multiple EU pilot programs funded by the government have already demonstrated the value, showing a drastic reduction in merchant fraud. As a result, multiple EU member nations are incorporating payment capabilities into their official government-provided wallets and working closely with financial institutions to implement usage.

The vast majority of E.U. citizens are expected to have access to a EUDI Wallet by 2030.

What sets it apart is the user-controlled model underpinning it. Instead of siloed databases and one-size-fits-all logins, eIDAS 2.0 moves toward self-sovereignty and portable credentials. This opens the door to faster onboarding, stronger verification and authentication, and a better customer experience (CX).

Another option for verified trust is to build strong, phishing-resistant biometric authentication directly into the wallet itself. In this model, the wallet not only carries verifiable credentials but also enforces robust step-up at the moment of use, binding every approval to the verified holder and their device, and, where needed, adding biometrics and liveness checks on top. 

That way, even if an attacker can see or intercept a credential, they still cannot use it without successfully authenticating inside the wallet, on the correct device, in real time.

For Individuals: Users gain full control over personal data. Selective disclosure allows someone to prove they are over eighteen without sharing their exact birthdate. Portable credentials can work across platforms and borders, significantly reducing the risk of identity theft.

For Organizations: Businesses can enable faster onboarding (minutes instead of days) and reduce compliance burden since there is less data to store and protect. Cryptographic verification lowers fraud exposure while enabling cross-border interoperability.

For Developers: Open standards (W3C VCs, DIDs, DIDComm) support privacy by design. API and SDK integrations can simplify credential issuance and verification.

These terms are often used interchangeably. Self-sovereign identity (SSI) is a specific philosophy within the broader ecosystem that emphasizes strong individual control over identity data. The broader concept covers any system not governed by a single central authority, including enterprise-focused implementations. Both share core building blocks: verifiable credentials, DIDs, and digital wallets.

While the potential is significant, there are real hurdles to navigate before decentralized identity reaches mainstream adoption. Understanding these challenges helps organizations plan more effectively.

Adoption: Existing centralized providers and legacy systems create inertia. Transitioning requires coordinated effort across organizations and jurisdictions.

Scalability: Distributed ledgers can face latency under high throughput. Cryptographic operations add computational overhead at scale.

Regulation: Privacy laws like GDPR and CCPA continue evolving alongside these frameworks. Meeting obligations requires ongoing alignment.

User Experience: Managing wallets, recovery options, and credentials can introduce new challenges for non-technical users.

eIDAS 2.0 entered into force in May 2024. In 2025, the European Commission delivered the technical architecture and interoperability standards. In 2026, very large online platforms (VLOPs), including financial institutions offering high-value or regulated services, are required to accept the EUDI wallet for customer authentication. By 2027, that obligation expands across the board to cover public services and private sector transactions requiring strong authentication.

This shift is crucial for fighting AI-driven fraud. Adversarial and generative AI are increasingly used to attack cloud connections, with frequent success against application programming interfaces (APIs) and federated identity integrations. Banks typically manage tens of thousands of APIs and thousands of federated access connections, and security leaders at large banks are warning that business as usual in these cloud and centralized models cannot be sustained safely.

By rerouting at least a portion of a transaction out-of-band through the wallet for as many users as possible, financial service providers can reduce attack surface and make it harder for fraudsters to succeed. The practical effect is that attackers must compromise devices individually, which raises cost and often requires local device access.

Adding biometric data to a credential and then matching it server-side with advanced deepfake detection can provide additional assurance, including proof of humanity. This ensures that relying parties do not have to worry about biometric processes being compromised or spoofed on the device.

Digital credentials and wallets enable a strong link between the issuer, the user's identity, their device, verified assurance, and the access rights granted. These credentials remain portable, which lets users present and use them wherever they choose.

Getting there requires robust IAM. IAM systems serve as the interface between the EUDI wallet and your back-end systems, enabling secure, standards-based authentication, identity proofing, and consent management.

Done right, IAM allows your institution to support selective disclosure, integrate with verifiable digital credentials, and manage trusted data flows across multiple jurisdictions. It provides out-of-the-box support that enables existing applications and secure single sign-on (SSO) systems to interact with wallets without changing code. Standards like SIOPv2 built into ready-made adapters help ensure backwards compatibility.

The Ping Identity Platform enables seamless authentication across EU member states using open protocols like OpenID Connect, OpenID4VCI, OpenID4VP, and SIOPv2. It supports verifiable digital credentials and DIDs aligned with the EUDI wallet model. This layered security stack—including FIDO-based adaptive multi-factor authentication (MFA) and real-time advanced threat protection—helps ensure wallet integrations meet high-assurance expectations. With experience managing over eight billion identities, Ping Identity offers the scale needed to support mission-critical services in banking and finance.