Egregor

**Prove it's really you. Every time.** Egregor brings real, cryptographically-verifiable signatures to your iPhone — no notary, no third-party trust service, no guesswork. Every signature is backed by industry-standard ECDSA public-key cryptography, generated and stored securely on your own device. **How it works** Create an account with a unique username, and your device automatically generates a private/public keypair. Your private key never leaves your iPhone — it's stored in the Secure Enclave-backed Keychain, protected the same way Apple protects your passwords and payment credentials. Only your public key is shared, allowing anyone in the world to verify your signatures without ever having access to sign on your behalf. Select any document — a PDF, a contract, an image, a text file, anything — and Egregor calculates its unique cryptographic fingerprint (a SHA-256 hash) and signs that fingerprint with your private key using ECDSA, the same encryption standard trusted by banks and governments. **Verify anyone, instantly** Need to know if a specific person actually signed a specific document? Just enter their username and select the file. Egregor checks it against every signature on record for that document and tells you definitively: valid or invalid. No blind trust required — the math either checks out or it doesn't. **Built for multiple devices** Your account isn't tied to a single phone. Add a new device, and it registers its own independent keypair under your username — lose a device, and you can simply stop trusting its signatures without affecting your other devices or your identity. **Why it matters** - **Freelancers & contractors**: Prove you delivered a specific version of a file, at a specific time, without disputes. - **Small teams**: Sign off on internal documents, approvals, or releases with cryptographic accountability instead of "reply-all confirmed." - **Developers & technical users**: A transparent, auditable signing flow — no black-box vendor lock-in, no proprietary format you can't inspect. - **Anyone tired of screenshotting a signature and calling it proof**: This is proof that actually holds up to scrutiny. **Security, plainly explained** - Private keys are generated on-device and never transmitted, stored in Keychain with hardware-backed protection. - Passwords are hashed with bcrypt server-side — never stored or transmitted in plain text. - Documents themselves are never uploaded or stored on our servers — only their cryptographic hash. Your files stay yours, always. - Signature verification uses standard ECDSA with SHA-256, an open, well-audited cryptographic scheme — not a proprietary black box. **Simple, focused, no clutter** Egregor does one thing and does it properly: cryptographic signing and verification. No ads, no unrelated features, no subscription upsells cluttering a security tool. Create your account, sign what needs signing, verify what needs verifying. Whether you're formalizing a freelance handoff, confirming an internal approval, or just want a signature that means something more than a scrawled name on a screen — Egregor gives you a signature you can actually prove.