UIID v1: The Launch of Passwordless, Zero-Knowledge Identity and Web 4

Published on October 24, 2025

UIID v1 Launch: The Starting Gun for Web 4 and True Digital Sovereignty

A new era of internet identity has begun with the stable V1 release of Universal Integrated Identity (UIID).

Taking Back Control: Decentralized Identifiers (DIDs)

The UIID team, powered by Linkspreed, has declared the official start of Web 4 with this V1 release [00:00:27]. This isn't just an update; it's a foundational commitment to a decentralized internet where you, the user, are finally in control of your digital existence [00:01:14].

The core technology is built on Decentralized Identifiers (DIDs). Unlike logging in with a tech giant, where they own a piece of your identity, DIDs flip the script: your identity lives on a secure, distributed network, and only you hold the digital keys [00:01:36].

The Two-Part Structure: Core ID and Aliases

UIID introduces a clever two-part identity structure for maximum security and flexibility [00:01:43]:

• Core ID: This is your permanent, unchangeable digital self, locked down tight for super-important, high-trust actions [00:02:03].
• Aliases: These are flexible, even disposable "masks" you create for everything else, such as social media or online shopping [00:02:18]. This allows you to give third-party apps only the exact slice of information they need and nothing more [00:02:26].

The benefit of this compartmentalization is immense. If a service gets compromised, you simply delete its alias, and the connection is instantly gone [00:02:50].

Passwordless Security via Zero-Knowledge Proofs (ZKP)

The V1 release's most revolutionary feature is the **zero trust handshake**, enabling totally seamless, passwordless identity [00:04:10]. The technology behind this is the Zero-Knowledge Proof (ZKP) [00:04:23].

With ZKP, you can prove you have the key to a door without ever actually showing the key to anyone.

This is huge because authentication happens cryptographically via a registered device (like your phone), and no password or secret key is ever sent over the network [00:04:42]. This wipes out a massive category of security risks, including data breaches.

Tiered Security and Granular Permissions

UIID's API, which is built on the familiar **OAuth 2.0** framework, features granular permissions handled through "scopes" [00:03:16]. Security is tiered:

• Sensitive actions (e.g., Core ID changes) absolutely require two-factor authentication (2FA) [00:03:50].
• Less sensitive access might only require a specific PIN for authorization [00:04:04].

This structure ensures the user is always in the driver's seat, deciding exactly what information is shared and under what security conditions.

Ready to Build the Future of the Web?

The infrastructure for a sovereign, private, and secure web is now live. The only question left is, what will you build with these new tools?

Watch the full UIID V1 Announcement Video

A release by Linkspreed. Learn more about UIID v1 and the vision for Web 4.