sasasavic.ca
Creates quantum-resistant verifiable proof of existence for files by hashing locally and applying dual signatures anchored to Bitcoin
A quantum-resistant timestamping service that creates verifiable proof of existence for files and documents by hashing locally and applying dual signatures anchored to Bitcoin. It serves researchers, creators, engineers, and legal and compliance professionals in businesses needing to establish priority, ownership, and regulatory evidence. It is positioned as the first known publicly accessible implementation of dual-signature timestamping combining ECDSA P-256 and NIST-standardized ML-DSA-65.
Key features
- Local SHA-256 hashing in browser
- Dual ECDSA P-256 signatures
- NIST ML-DSA-65 quantum-resistant signatures
- Bitcoin blockchain anchoring via OpenTimestamps
- Independent open verification
- Public ledger with daily anchoring
- Files never leave device
- No social media activity within the last 30 days
GTM channels
- API
ICP
- Software developers
- Legal teams
- Engineering teams