A little Bivvy.
A lot of possibility.

Bring self-custodial Bitcoin and portable Nostr identity to your app. One script. One passkey. No API keys.

Make yourself at home

Bivvy is a shared passkey wallet for the open internet. Your users create a passkey once and bring the same Bitcoin wallet and Nostr identity to any app that integrates Bivvy.

<script src="https://bivvy.me/bivvy.js"></script>

Small integration. Thoughtful defaults.

• No passwords, extensions, API keys, or app registration.
• Passkeys derive the wallet on the user’s device. Bivvy never stores user seeds on a server.
• Apps communicate with an isolated Bivvy iframe. Sensitive actions open a Bivvy approval window.
• Existing Nostr and WebLN providers are preserved.