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Digital Identity

Prove who you are, without oversharing.

MasChain lets people share a verified answer instead of their whole identity, proving they're over 21 without a birthdate or a citizen without an IC number. Credentials stay in the user's hands, and every check is logged on-chain.

Isometric illustration of privacy-preserving digital identity verification

Why it matters

Every sign-up asks for more than it needs

To prove one small fact, like that you're old enough or that you live where you say, you hand over your full identity: IC number, birthdate, home address. That data gets copied into database after database.

Every copy is a liability. Companies end up storing sensitive personal data they never wanted, becoming targets for breaches and bound by regulations they'd rather avoid. And the person it belongs to loses all control over where it ends up.

The mismatch is simple: a yes/no question shouldn't require handing over your entire identity. But without a way to prove a single fact, oversharing is the only option.

Illustration of a person proving a single fact without revealing their full identity

How it works

Prove a fact, not your whole file

01

Identity is issued once

A trusted authority issues a verifiable credential straight to the user's wallet.

02

The user holds it

Credentials live with the person, not in a company database.

03

Only the answer is shared

Prove "over 21" or "citizen" as a simple yes, without revealing the data behind it.

04

Every check is logged

Verifications are recorded on-chain: auditable, but privacy-preserving.

What it unlocks

Value for everyone involved

For businesses

Verify customers without storing their sensitive data, which means less breach risk, less compliance burden, and a faster sign-up that doesn't scare people off.

For regulators & auditors

Every verification is recorded on-chain, so compliance can be confirmed without ever exposing the underlying personal data.

For individuals

Prove what you need to and nothing more. Your identity stays in your wallet, under your control, wherever you use it.

Real solutions

Built with this use case

Real deployments running on MasChain identity infrastructure. More on the way.

Build yours

Have an identity or verification problem to solve? We'll help you scope it and get a working proof of concept on MasChain.

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