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UUID Use Case

UUID Verification Token

Proof-of-ownership flows (verify email, confirm phone) need a token the user can return but an attacker cannot forge.

Single-useExpiringv4

Version

How many

Uppercase Hyphens Braces { }

Result

Generated locally with the Web Crypto API — nothing leaves your browser.

What Is UUID Verification Token?

A verification token is a v4 UUID mailed or texted to the target; returning it proves the user controls that channel.
Hash it server-side and expire it, exactly as with reset tokens.

How to generate

Generate a v4 UUID on request.
Email/SMS it; store a hashed, expiring copy.
Mark the channel verified on correct return.

Use Cases

Email confirmation.
Phone number verification.
Newsletter double opt-in.

Code Examples

JavaScript

const id = crypto.randomUUID();

Python

import uuid
id = uuid.uuid4()

Frequently Asked Questions

Verification vs reset token?

Same mechanics; verification proves ownership of a channel, reset proves the account owner wants access.

Can the token be in the URL?

Yes — that is how the link works; keep it single-use and short-lived.

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