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Card 926 of 9842026-09-28 issue

Observed arrival · 2026-09-28

Vouch — permission without disclosure

vouchsats.xyz Visit website
Editorial interest 82/100 Selection signal · not a rating of the site

A browser-based demonstration of a credential protocol that lets an agent prove it has permission to spend without revealing the job to the party granting that permission.

Landing page captured for the 2026-09-28 issue.
For
Engineers exploring privacy-preserving authorization
Worth noticing
The demo tests whether a discharge can be reused on another job or forged, alongside the successful credential flow.

Field notes

The service, agent, and voucher are simulated together in the browser rather than communicating across a network. The page says the caveat contains a fresh key and a question sealed for the voucher, and identifies a secret root key plus an honest voucher answer as load-bearing assumptions. Payment, caveat expiry, and key distribution are outside the demonstrated implementation.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use

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Regulated by Arithmetic

233,109 arrived 1,000 judged 984 catalogued Enter the complete issue
vouchsats.xyz

Landing page observed 2026-09-28. The live site may have changed.