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Proof of Priority: 8 Methods Compared (Cost, Delays, Evidentiary Value)

Compare 8 ways to prove that a file, idea, or creation existed at a given date: costs, delays, limitations, and recommendations based on your context.

SHA-256 Hash: How to Prove File Integrity (and Why It's Not Encryption)

A SHA-256 hash acts as a digital fingerprint: if the file changes, the fingerprint changes. Discover why it's not encryption, how to verify it concretely, and best practices for solid proof.

January 29, 2026

6 min

Guides

Document Timestamping: Definition, Uses, Examples and Mistakes to Avoid

Document timestamping allows you to demonstrate that a file existed at a given date and hasn't been modified since. Definition, practical uses and common mistakes.

January 24, 2026

8 min