Resources
Useful proof habits, without the panic.
A small library for creators and teams who share valuable files. Start with the free tool, keep the checklist nearby, and only create a certificate when the work actually matters.
Free SHA-256 file hash checker
Get a local fingerprint for a file before you send it. The file stays in your browser.
Use the toolCreator proof checklist
A calm, practical evidence checklist for demos, manuscripts, design files, builds, decks, and client work.
Read the checklistVerify a file
Check whether a file matches a public Provelio certificate. No account needed.
Verify a fileDeveloper API
Timestamp file hashes from your own product, release workflow, or document system.
View API docs