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Obsign & Custos Documentation

Cryptographic, not custodial. The keys are yours; the docs meet you where you stand.

This site documents both sides of the same system — pick the one that matches what you’re doing.

Using Obsign

For people holding and defending an identity. Onboarding, tamper monitoring and the 72-hour recovery override, 2-of-3 Shamir backup, and migrating your identity between servers.

Start with Obsign →

Running Custos

For operators running a relay. Standing up the server, the configuration and environment surface, backups, and moderation.

Start with Custos →

This is the published, audience-facing documentation. The repository’s internal docs/ tree (specs, ADRs, design plans) is the raw material these pages are written from — it is deliberately not published here.