Agent · /llms.txt SHA-256
Notes · Announcements and explainers
Latest · September 2026
23 September 2026 Comment · Utah Rule R152-78B

Age verification is a location problem.

Utah's proposed rule specifies how to measure age to a tenth of a percent and prices the location check as an IP lookup. A VPN turns the whole scheme off. Our comment to the Division of Consumer Protection.

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6 August 2026 Explainer · Cryptographic proof of location

Cryptographic proof of location.

A signed artifact stating that a specific device was inside a specific region at a specific time, which a third party can verify without trusting whoever produced it. The four approaches and their failure modes.

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25 June 2026 Launch · Octet is live

Octet is live.

Octet is a new primitive for proving location: a hardware-signed proof that a real device is where it claims to be. Live on iOS and Android, for jurisdictional compliance and fraud prevention.

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