ProofChain is a lightweight, decentralized blockchain protocol designed solely for proof‑of‑existence. It allows anyone to create immutable timestamps for digital content without storing the content itself and without relying on a central authority.
Unlike traditional blockchains, ProofChain does not include tokens, mining rewards, or financial incentives. Its only purpose is to provide a verifiable, tamper‑resistant record that a specific piece of data existed at a specific moment in time.
Key Features Stores only cryptographic hashes, never files or personal data
No cryptocurrency, no tokens, no fees
Simple and energy‑efficient consensus (Proof‑of‑Authority)
Publicly verifiable and tamper‑resistant
Suitable for documents, images, research data, logs, and more
Designed to operate independently of its creator
Use Cases Timestamping contracts and agreements
Proving authorship of creative works
Verifying original photographs
Securing research and scientific data
Ensuring integrity of audit logs
Timestamping AI training datasets
Goal of the Project ProofChain demonstrates that blockchain technology can be useful beyond finance. By focusing on a single purpose—existence verification—it provides a simple, privacy‑preserving, and decentralized alternative to centralized timestamping services.