SBIX Certify

SBIX Certify

✨ Instant legal proof-of-existence for any document.

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Prove any document existed at a specific date : in 3 seconds. Upload any file. Get a PDF certificate with triple anchoring: Legal timestamp (TSA RFC-3161) Tezos blockchain Aleph.cloud decentralized storage Your file is never stored : only its cryptographic fingerprint. Perfect for creators, inventors, lawyers, and anyone who needs verifiable proof of prior existence. 5 free certs/month. No credit card required.
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Launch tags:Productivity•Tech•Blockchain
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Charly GREAUX
Maker
📌
Hey everyone! 👋 I built SBIX Certify after losing a dispute over a design I had created months before someone else claimed it. No proof, no case. That stuck with me. Now anyone can prove a document existed at a specific date ; in 3 seconds. How it works: Upload any file (never stored, only hashed) Get a PDF certificate with triple anchoring: TSA RFC-3161 (legal), Tezos blockchain, Aleph.im storage Share or verify anytime ; no account needed to verify Built for creators, inventors, lawyers, researchers ; anyone who might one day need to say "I had this first." Free tier: 5 certs/month. I'd love your feedback!
Agbaje Olajide

love this
For someone new to this, can SBIX be used to timestamp iterative versions of the same document (like drafts of a manuscript), or is it best for final versions only?

Charly GREAUX
Maker

@olajiggy321 Great question! 🙏

Yes — you can timestamp every version! Each upload creates a unique certificate with its own hash and timestamp.

Actually, this is a perfect use case:

→ Draft v1 — timestamped March 1

→ Draft v2 — timestamped March 15

→ Final version — timestamped April 1

Each version = separate proof of existence at that specific date.

Perfect for writers, researchers, or anyone who needs to prove their creative process over time.

Try it free — 5 certs/month, no credit card needed!

Agbaje Olajide

@charly_greaux 
Thanks for explaining—timestamping each version for creative/legal proof is really smart.

I have a small idea related to improving how those version histories are organized that you could try on your own.

If you're open to a suggestion, what's the best way to share it?