Authority Guides
Claims-safe explainers on timestamps, hashing, verification, and what digital evidence does—and does not—prove.
What Is a Cryptographic Timestamp?
A plain-English explanation of cryptographic timestamps, file fingerprints, and how they differ from ordinary date stamps.
How to Prove a Digital File Existed at a Specific Time
Practical steps to document that a digital file existed in a particular form at a particular time using hashing and timestamps.
Blockchain Timestamp vs. Copyright Registration
How blockchain timestamps differ from official copyright registration, and when each may be useful.
Does a Timestamp Prove Ownership?
Why timestamps support evidence of existence and time but do not automatically prove legal ownership.
How to Protect Source Code Before Sharing It
A practical evidence-first approach for developers before sharing repositories, builds, or deliverables.
How SHA-256 File Hashing Works
What SHA-256 file hashing is, why fingerprints matter for digital evidence, and how ProofIt uses them.
Blockchain Timestamp vs. RFC 3161 Trusted Timestamp
Compare blockchain-anchored hashes with RFC 3161 TSA tokens and how ProofIt can use both.
What Happens to a Timestamp When a Subscription Ends?
Retention rules for files, certificates, hashes, TSA evidence, and blockchain records after cancellation.