Watermark it. Seal it. Prove it's yours.
In plain English: a tamper-proof seal on every file you publish — verifiable by anyone, without us.
EpochCore watermarks, protects, captions, and verifies any file — entirely inside your browser. Patient scans, legal exhibits, unreleased footage: everything stays on your computer and is never uploaded. Anyone can check a file is genuine on the verify page.
Three steps. Nothing leaves the device.
Everything happens on your computer. Your file is opened, marked, and sealed locally — only a small, anonymous fingerprint is ever recorded, so regulated content never leaves your walls.
Mark
Add a visible logo plus a hidden, invisible watermark tied to you — one that stays put even after a file is re-saved, cropped, or re-shared.
Seal
Lock in a tamper-proof certificate of ownership, and optionally encrypt the file so only the people you choose can open it. The file itself stays on your machine.
Verify
Anyone can confirm a file is genuine and unchanged — or trace a stolen, re-uploaded clip back to you. Fakes and deepfakes simply don't pass.
Seal a PDF right now.
Drop any PDF to add a tamper-proof cover page and a one-of-a-kind seal — computed entirely on your device. Your file is never uploaded.
Built for the content that can't leave the building.
If uploading to a cloud editor is a compliance violation, EpochCore is the only way to mark and prove your media — because it never uploads.
Watermark X-rays and records without a HIPAA breach.
Protect X-rays, scans, and patient records with a tamper-proof certificate of ownership — entirely in your browser. Patient information never goes to a server, so there's nothing to upload, log, or breach. You can also lock each file so only named recipients can open it.
Chain-of-custody you can prove.
Seal exhibits and depositions with a dated certificate of ownership. Show an exhibit is unchanged since intake — without ever handing the evidence to an outside service.
Embargoed footage, marked at the source.
Give each reviewer a copy with its own hidden watermark that stays intact even after re-saving — so any leak traces straight back to the source.
Captioned, reframed, and provably yours.
Auto-caption, clip the best moments, reframe to 9:16, and export sealed. When a deepfake or repost surfaces, the invisible mark proves the original is yours.
A deepfake can copy your face. It can't copy the seal.
Every file you create carries a hidden, one-of-a-kind mark and a tamper-proof certificate of ownership. A cloned voice or AI lookalike can't reproduce them — so the fake fails the check while your original passes. Real protection against AI copies, not just a logo in the corner.
One toolkit. Every tool.
A single toolkit that does it all — mark, protect, check files for safety, lock, caption, clip, and verify.
Watermarker + Sealer
Visible and hidden watermarks on video. Any other file gets a safety check, a certificate of ownership, and optional lock-to-recipient protection.
Open →Captions Studio
Auto-caption, edit on a timeline, rank the best clips, reframe to 9:16, export sealed + watermarked.
Open →Verifier
Confirm a file is genuine from its certificate, or trace the hidden mark in a re-shared clip back to you.
Open →Avatar Studio
Build a protected avatar card, then turn a voice clip into a watermarked short. The seal defeats clones.
Open →Merge Tools
Combine, splice, overlay, and seam-join clips — five focused editors on the same engine.
Open →Platform Atlas
The big-picture view — what's included and where the suite is headed.
Open →Serious protection, in plain sight.
The seal isn't marketing — it's the same class of protection trusted to secure banking, running right on your device.
Lock files to people
Encrypt any file so only the recipients you name can open it — built to stay secure even against tomorrow's threats. Works entirely offline.
Tamper-proof certificate
Every file gets a dated certificate of ownership that can't be forged or altered — and that holds up as technology changes.
Your file never leaves
Only a small, anonymous fingerprint is ever recorded — never the file itself. Sensitive content stays on your computer, by design.
Checked before it's sealed
Every file is automatically screened for hidden threats and disguised content right in your browser before anything is sealed.
Prove your work is yours — without uploading a thing.
Open the suite in your browser. No account, no install, no data leaves your device.