Read between the lines
First, find whose lines to read.
Subter is the app for messages hidden in plain sight. This is its directory — where your contacts find and verify you. Pin your socials, email, domains and wallets into a signed, offline-verifiable document keyed by your Subter fingerprint. Your keys never leave your device. Publish paid, resolve free.
Look someone up
Anyone can resolve a handle or fingerprint — free, no account, and no per-user logs kept. Type a @handle or a fingerprint.
How it works
1 · Enroll your key
Prove control of your device keys. Subter binds them to your fingerprint and starts a tamper-evident key log — nothing secret ever leaves your device.
2 · Verify & publish
Link accounts you control; Subter signs each as its own attestation and publishes a self-contained document at your fingerprint.
3 · Anyone resolves it
Your card, document and key log are public and free to fetch, and verify offline — the server is a host, not an oracle.
Built for developers
A clean REST surface, an OpenAPI contract, and offline verification.