Blockchain-Based Identity Infrastructure
Replace password-based authentication with cryptographic signatures. Users retain data ownership and reputation portability across the ecosystem.
TokenPass Identity Wallet
Personal OAuth System
No cloud accounts, no gatekeepers, same familiar experience.
Privacy-First Identity
Your keys never leave your device. Every operation happens locally using Bitcoin cryptography.
Your Own OAuth Provider
Replace Google, GitHub, and other identity providers. Authenticate to any app with your Bitcoin identity.
Per-App Key Isolation
Each website gets a unique derived key. Apps can't track you across sites or correlate your identities.
The password problem isn't going away. We're going around it.
Passwords are the original sin of internet security. We store them in databases that get breached. We transmit them across networks that get intercepted. We reuse them across services, turning one compromise into a cascade.
Every "forgot password" email, every breach notification, every MFA prompt—these are band-aids on a fundamentally broken system. The authentication industry has spent twenty years making passwords more annoying without making them more secure.
Sigma Identity takes a different approach: eliminate passwords entirely. Users authenticate by signing cryptographic challenges with their private key—the same technology that secures billions of dollars in Bitcoin. Nothing is stored. Nothing is transmitted. Nothing to breach.
Four steps to owning your identity
Create Your Identity
Generate a master seed protected by your password. This creates your Bitcoin-backed identity that only you control.
Connect to Apps
When an app requests authentication, TokenPass derives a unique key for that app. No two apps see the same identity.
Sign & Authenticate
Approve signing requests with one click. The app receives cryptographic proof of your identity without seeing your private keys.
Build Your Reputation
Your actions and attestations accumulate across the ecosystem. Switch apps without starting over. Your reputation travels with you.
AI-assisted integration
Install our Claude plugin and let AI guide you through the entire setup process.
$ claude plugins add @sigma-auth/better-auth-pluginAI Integration Agent
The plugin includes an expert agent that understands OAuth flows, token management, and BAP identity integration. Ask it anything.
Guided Setup
Walk through environment variables, callback handlers, and client configuration with contextual help at every step.
Code Generation
Generate auth clients, API routes, and callback pages tailored to your Next.js, React, or vanilla JS setup.
Or install the package directly:
npm install @sigma-auth/better-auth-pluginStandard OAuth. Sovereign infrastructure.
Sigma Identity speaks OAuth 2.0. If your application already supports social login, you can add blockchain-based authentication in an afternoon. Same flow, same endpoints, same redirect patterns—backed by cryptographic proof instead of corporate databases.
Web SDKs
JavaScript libraries for React, Vue, and vanilla JS. TypeScript support built in.
Mobile SDKs
Native iOS and Android libraries. Uses device secure enclaves for hardware-backed key storage.
Enterprise APIs
REST endpoints and SAML bridges for existing identity infrastructure.
