Across a phone call
Designed for audio that leaves the original file, travels through a call and gets recorded again.
A watermark
built to stay.
Give your audio an identity designed to endure re-recording, pitch shifts, added sound and changes in speed.
Explore watermark resilienceAudioSettingsDelivery
or
Made to be
hard to remove.
Audiomark embeds an identity in the sound itself, rather than in a filename or metadata. It is designed to stay detectable as the audio changes.
Check a watermarkThrough pitch changes
Built to preserve a detectable identity when the pitch of a voice or track is shifted.
Under added sound
Designed to remain detectable beneath layered voices, music and background noise.
At a different speed
Built for playback that has been sped up or slowed down after watermarking.
Give your audio an identity
that travels with it.
Late night idea.wav
Add your audio
Upload a file or record something new.
Embedded identityUnique to your audio
Watermark verificationBefore download
Linked to your private key
Embed your watermark
Get a unique watermark, verified before your audio is ready.
audiomark / a-moment-in-time
Delivered
Download or deliver
Keep the watermarked file or share it through a temporary link.
Choose what
stays private.
Audio is removed on completed delivery, revocation or expiry. Your watermark records stay with file details, fingerprints and receipts until you delete them. End-to-end encryption is not yet available.
How privacy worksBrowser delivery with server fallback
Your browser
Their browser
Audiomark
00:00:00
Link expired
Choose when
the link expires.
Choose an expiry or revoke your link whenever you want.
Expiration stops new access. It can't erase copies already saved.
Keep a record
of your delivery.
Keep a file fingerprint and delivery receipt, without storing the audio.
Verify a fileDELIVERY RECORDEXAMPLE
Audio delivered
- Transfer
- AM-8F2A-09C1
- Completed
- Oct 19, 2026 · 09:41
- Audio retained
- None
- Record signature
- Ed25519
SHA-256 FINGERPRINT7b8e2d4a09c1…f063b512a9de
Common questions
Audiomark is designed to keep a watermark detectable through phone-call re-recording, pitch shifts, sound overlays and speed changes. Detection depends on the recording quality and the extent of the changes; it is not a guarantee against every alteration.