SOULPROP
Cryptographic timestamps that hold up when it matters. We seal your files with a verifiable timestamp and give you the only key.
We believe that ownership begins with the creator and that proof should too.
How it worksThe freelancer: You deliver mockups to a client. They ghost you. Three months later, you see your exact designs on their website — and they're refusing to pay.
The developer: You share your algorithm with a potential partner. They pass. Six months later, their "new feature" looks awfully familiar.
The author: You send your manuscript to a publisher. They reject it. A year later, a suspiciously similar book hits the shelves.
The contractor: You finish the project on time. The client claims you were late to avoid the final payment.
You know you created it. You know when you delivered it.
But can you prove it?
SoulProp creates a cryptographic seal around your files. We request a timestamp from an independent authority (not us), encrypt your files so only you can open them, and store it securely.
You get a key file. This is the only copy — we don't keep it. When you need to prove when you created something, return with your key. We'll decrypt your files and provide a complete evidence package.
We never see your content. Your files are encrypted the moment they arrive, before any human could access them. The key is generated and given only to you — we never store it. Without your key, we cannot read what you sealed. Not now, not ever. Your work stays "prop" — proprietary to you alone.
NFTs and blockchain timestamps require wallets, gas fees, and chain-specific infrastructure that may not exist in 10 years. RFC 3161 timestamps are legally recognized, universally verifiable, and work with standard tools — no crypto expertise required.
.soulprop file containing your decryption key. This is the only copy — we don't keep it. Store it somewhere safe.
Your key is irreplaceable. Without it, your files stay sealed forever. Back it up to cloud storage, a USB drive, or anywhere you won't lose it.
.soulprop key file. This proves you have the right to reveal the seal.
No trust required. The evidence package lets anyone verify your timestamp without relying on SoulProp. The cryptographic proof stands on its own.
Walk through the full experience with a sample document. See exactly what you get — the sealing process, your key file, and the evidence package.
Watch the demo2-3 minutes
Creators protecting original work before sharing with collaborators
Authors timestamping manuscripts and books before submission
Developers timestamping algorithms and code before open-sourcing
Inventors documenting prior art before patent filings
Businesses proving when contracts and deliverables existed