Best file timestamp tools compared (2026)

File timestamp tools prove that exact bytes existed by a stated time. Products differ on protocol (OpenTimestamps / Bitcoin vs RFC 3161 TSA), whether you get a public certificate ID, whether the original is uploaded, and whether the proof survives if the vendor disappears. This page compares common options for creators who stamp designs, decks, and exports before sending them — not for eIDAS QTSP enterprise procurement.

Quick comparison

• IdeaProofNow — Productized SHA-256 + optional OpenTimestamps / Bitcoin; on-device hash; public ID + free verify; $4.99 buy-one-get-one. Weakness: not an eIDAS qualified TSA; stamp is paid (verify is free).
• OriginStamp — Historic blockchain timestamp brand; consumer site has shifted toward enterprise / OriginVault AI. Weakness: consumer pricing and UI are opaque; batching can delay anchors.
• Bernstein — IP portfolio + Bitcoin + regional TSA options; version history. Weakness: paid project model; files may be stored encrypted on their servers.
• ProofStamper — Free RFC 3161 via FreeTSA; no account; local hash. Weakness: FreeTSA is not a qualified eIDAS TSA; no Bitcoin / OTS layer.
• OpenTimestamps — Free open protocol; CLI / calendars; Bitcoin anchor. Weakness: no product certificate UI for non-technical users.
• Email-to-self — Not a cryptographic proof. Weakness: trivial to dispute; do not rely on it.

IdeaProofNow — where it fits

Choose IdeaProofNow when you want a dated public certificate ID you can send to a client, on-device hashing (original stays with you), a free verify page, an operations log, and optional OpenTimestamps / Bitcoin — without claiming copyright registration or a notary seal. Pay-per-file is $4.99 for two stamps. Free verify never requires login.

• + Public certificate + verify URL non-technical counterparts can open
• + Optional OTS / Bitcoin so time is not only one company clock
• + Proof package + VERIFY.md for checks that do not depend on our UI forever
• − Not a qualified eIDAS timestamp authority
• − Creating a new dated record is paid (looking up an existing one is free)
• − Does not prove authorship or ownership by itself

How to choose in one sentence

• Need DIY Bitcoin only → OpenTimestamps.
• Need free instant RFC 3161 token → ProofStamper / FreeTSA stack.
• Need IP project vault + TSA options → Bernstein.
• Need a creative-file certificate with public verify and optional OTS → IdeaProofNow.
• Need US statutory copyright benefits → register with the Copyright Office; timestamp first for speed.