What Is Data Minimization and Why Does It Matter for Government Services?
Agencies don't have to choose between effective services and resident privacy, data minimization makes both possible by design.
If you work in government digital services or technology policy, you have probably sat through a briefing where the phrase "verifiable digital credentials" appeared on a slide, and most people in the room nodded as if they understood. In practice, that understanding is often uneven.
That is not a criticism. It reflects a real gap: the term comes up frequently in digital identity conversations, but there are fewer explanations of what actually happens when a credential is issued, held, or checked.
The Notarized Letter Analogy
Start with something familiar: a notarized letter. A notary reads a document, confirms the signer is who they say they are, and stamps it with an official seal. Anyone who receives that letter later can look at the seal and rely on the document without having to call the notary or track down the original signer. The seal does that work.
A verifiable digital credential follows a similar pattern, with one important difference: instead of a physical stamp that could potentially be forged, the "seal" on a verifiable digital credential is mathematical. A receiving party can check it automatically, usually in milliseconds, without contacting anyone.
What "Verifiable" Actually Means
In everyday language, "verifiable" can mean "we can check this if we want to." In the context of verifiable digital credentials, it means something more specific: the verification can happen automatically, the result is consistent, and it does not require an active connection to the issuer at the moment of the check.
The issuer's signature, attached at the time of issuance, carries the information needed to confirm the credential's authenticity and integrity. That confirmation does not require a phone call, a database lookup, or a manual review. It happens at the point of submission, each time the credential is presented.
Put another way: "verifiable" does not mean "we trust the person who handed it to us," and it does not mean "we checked with the issuer earlier." It means we can confirm, at the moment of use, that this specific claim was made by the stated issuer and that it has not been changed since it was issued.
That distinction matters for agencies. Traditional document review often depends on the judgment of the reviewer, the quality of the submitted materials, and available staff time. Verifiable digital credentials standardize that check, making it more consistent and less dependent on manual processes. The Technology Powering Digital Identity provides a full picture of the standards infrastructure that supports this model.
Three Roles, One System
Every verifiable digital credential transaction involves three parties. The structure distributes trust rather than centralizing it, no single party controls the entire process. Walking through each role shows how.
The Issuer
The issuer is the organization that creates and signs the credential. In government contexts, this is often a state DMV issuing a mobile driver's license, a federal agency issuing a benefit eligibility credential, or a university issuing a degree credential.
The issuer plays a role similar to the notary: it attests to the accuracy of the claims inside the credential by attaching its signature at the moment of creation.
Once that signature is attached, the issuer typically does not need to stay involved. The credential carries proof of its origin with it.
The Holder
The holder is the individual who receives the credential and stores it, typically in a digital wallet on their phone. This is where the model begins to differ from how government data systems are usually structured. Instead of living in a central database waiting to be queried, the credential is held by the individual.
The holder decides what gets shared and when. Before presenting a credential, they can choose which attributes to reveal, a capability known as selective disclosure. An age verification does not need to include a home address. A residency confirmation does not need to include a birthdate.
This works because the credential can be structured so that individual fields are independently verifiable. The issuer's signature still holds even when only a subset of the data is presented. The holder is not just passing information along, they have an active role in controlling how their data is shared at each step. What's the Difference Between a Physical ID Card and a Verifiable Digital Credential? covers selective disclosure in more detail, including how it applies in everyday scenarios.
The Verifier
The verifier is the party that receives and checks the credential. This might be a state agency reviewing a benefit application, a federal contractor checking a clearance, or a licensing board confirming a professional certification.
The verifier generally needs to answer two questions: did a trusted issuer create this credential, and has it remained unchanged since it was issued?
Both questions are answered by checking the issuer's signature. If the signature checks out, the credential can be treated as genuine and intact. If something has been altered after issuance, the signature will no longer match.
In many cases, this means the verifier does not need to call the DMV, query a central database, or wait for manual review. For a deeper look at what verifiers need and how compliance requirements shape their decisions, Verifiers: Trust at the Point of Use covers the subject in full.
What the Resident Experience Looks Like
Consider a resident renewing their Medicaid eligibility, a process that requires proof of residency and age. Under many current systems, that resident might mail in a utility bill and a copy of their driver's license, wait for a staff member to review the documents, and then wait again for a decision.
With verifiable digital credentials, the process looks different. The resident opens their digital wallet, selects the relevant credential issued by their state DMV, and presents only the required attributes: city of residence and confirmation that they meet the age requirement.
The agency's system checks the issuer's signature in the background. If it passes, the application can move forward. The verification step itself takes seconds.
Nothing the resident submitted can be altered in transit. Only the necessary information is shared. And the need for manual validation is reduced.
How This Differs From a Physical ID
A physical driver's license relies on visual security features such as holograms, microprinting, and specific card materials to signal authenticity. These features can work reasonably well in person, especially when reviewed by someone trained to recognize them. However, they are less effective in digital contexts and typically require sharing all the information printed on the card.
A verifiable digital credential takes a different approach. Its integrity comes from its signature rather than its appearance. It can be used in digital environments, and it supports the kind of selective sharing described above: rather than presenting an entire ID, the holder shares only what a specific interaction requires.
Why This Matters for Agencies Right Now
The issuer–holder–verifier model means trust can be established at the point of submission. An agency may not need to call another organization, query a database, or assign staff to manually review documents in order to confirm a credential is valid. The credential arrives with its verification built in.
This changes how certain processes operate. Eligibility checks that take days today can be resolved more quickly. Residents who currently submit the same documents across multiple programs can reuse a single credential. And forms of fraud based on altered or forged documents become significantly harder to carry out.
These are not hypothetical improvements. Systems based on this model are already in production. State DMV programs and federal benefit systems are beginning to deploy this kind of infrastructure, and the ecosystem of issuers, wallets, and verification tools continues to grow.
SpruceID works with many of these programs, building the infrastructure behind verifiable digital credential systems - from issuance to wallets to verification. If you're evaluating how this model fits into your agency's processes, we'd love to chat.
Building digital services that scale take the right foundation.
About SpruceID: SpruceID builds digital trust infrastructure for government. We help states and cities modernize identity, security, and service delivery — from digital wallets and SSO to fraud prevention and workflow optimization. Our standards-based technology and public-sector expertise ensure every project advances a more secure, interoperable, and citizen-centric digital future.
