What is SasaSavic Quantum Shield™?
Prove a file existed with quantum-resistant dual signatures (ECDSA P-256 + NIST-standardized ML-DSA-65). Hash locally (SHA-256), dual-sign ledger entries, anchor to Bitcoin via OpenTimestamps. First known publicly accessible (as of October 2025) quantum-resistant timestamping service.
Problem
Users need to prove the existence of digital files with long-term security but are reliant on traditional digital signatures vulnerable to quantum computing attacks.
Solution
A quantum-secure timestamping tool enabling users to generate dual signatures (ECDSA P-256 + ML-DSA-65) and anchor proofs to the Bitcoin blockchain, ensuring cryptographic resilience against future quantum threats.
Customers
Legal professionals, financial institutions, healthcare organizations, government agencies, and research entities requiring immutable, verifiable records.
Unique Features
Combines quantum-resistant ECDSA and ML-DSA-65 algorithms, local SHA-256 hashing, Bitcoin blockchain anchoring via OpenTimestamps, and claims to be the first publicly accessible quantum-resistant timestamping service (as of October 2025).
User Comments
No user comments available from provided data. Additional research needed.
Traction
Launched on ProductHunt in October 2025 (description reference). Specific metrics (e.g., revenue, users) require external data.
Market Size
The global quantum cybersecurity market is projected to reach $5.8 billion by 2030 (Market Research Future, 2023).
