How to certify an audio recording with legal value
The ways to certify an audio recording
An audio recorded in real time proves when and with which device you recorded it. An audio file you already have is certified from the moment you upload it.
- Method 1Recommended
Real-time recording
Certifies the date, time and device of the recording, with the sound captured by the microphone.
App for iOS and AndroidRecord in real time - Method 2
An audio file you already have
For a recording on your phone or computer. Certifies the file from the moment you upload it.
App and PortalCertify an existing audio - Method 3
A meeting or a voice message
For an online meeting in progress or a voice message on your phone.
Portal and appSee how - Method 4
From your software
For audio that comes from one of your systems. Certifies the file or its fingerprint.
API and MCPIntegrate the API
How do you certify an audio recording in real time?
You record the audio the moment it happens and the certification is created together with the recording. As evidence, it is worth more than a file uploaded later.
How to certify audio on your phoneVideo tutorial · 1:53
How to certify audio on your phoneVideo tutorial · 1:53
How to certify audio on your phoneVideo tutorial · 1:53
How to certify audio on your phoneVideo tutorial · 1:53
How to certify audio on your phoneVideo tutorial · 1:53
How to certify audio on your phoneVideo tutorial · 1:53- 1
Download the app
Free to download on the App Store and Google Play. Requires iOS 18.2 or Android 8.0 or later.
- 2
Open Audio
Log in or sign up, then tap “Audio” under “Certify now”.
- 3
Allow locationOptional
Tap “OK, enable GPS”: the report will show where you recorded the audio.
- 4
Record the audio
Tap the red button to start, allow the microphone when the phone asks, then tap it again to stop.
- 5
Confirm and send
Check the preview and tap “Confirm and send”.
TrueScreenHow do you certify an audio file you already have?
You certify it as a file, from the app or from the Portal. The certified date starts when you certify it: it does not prove when the audio was recorded.
From the app
Under “Certify now” tap “File”, then “Import file” and choose the audio file. Then tap “Confirm and send”.
From the Portal
Under “Fast certifications” click “File”, drag the audio files into the window and click “Confirm”.
How do you certify a meeting or a voice message?
An online meeting is certified by a TrueScreen assistant that joins it. A voice message on your phone is certified by recording the screen while it plays.
Online meeting
On Zoom, Google Meet, Microsoft Teams, Slack or Webex: paste the meeting link and the assistant records audio and video while the meeting is in progress.
Voice message
Record the screen with the app while you play the message: the recording can include the audio the phone plays, if the phone allows it.
How do you certify audio from your own software?
With the API or MCP, your system sends the audio file, or just its fingerprint, and receives the certification.
- Your softwareManagement system, app or archive
- TrueScreen API or MCPReceive the audio file or its SHA-256 fingerprint
- Your certificationWith a qualified electronic seal and timestamp
What a certified audio recording contains
PDF report
Date, time, location if allowed, and device data.
Electronic seal and timestamp
Qualified under the European eIDAS regulation.
SHA-256 fingerprint
If the recording changes, it shows.
Original recording
The whole audio, as you recorded it.
JSON data
The same data, readable by software.
Notes and extra content
Photos, videos and notes, if you add them to the certification.
What legal value does a certified audio recording have?
An audio recording certified with TrueScreen carries full legal and evidentiary value, worldwide.
Forensic acquisition
The recording follows the international ISO/IEC 27037 standard for digital evidence.
Qualified electronic seal and timestamp
They fix the content and the date under the European eIDAS regulation.
Verifiable integrity
Any change to the audio or the report, however small, is detected.
Questions about certified audio
How do you certify the date of an audio recording?
Record it in real time with TrueScreen: the date and time of the recording are fixed with a qualified timestamp. The date in the metadata of an ordinary audio file can be changed.
Can I certify an audio file already on my phone?
Yes, as a file. It gets a certified date from the moment you certify it, but it does not prove when it was recorded: for that you need a real-time recording.
How do I certify a WhatsApp voice message?
On your phone, record the screen with the app while you play the message: the recording can include the audio the phone plays, if the phone allows it.
Can I certify an online meeting?
Yes, while it is in progress: a TrueScreen assistant joins the meeting and records audio and video. A meeting that has already ended cannot be certified.
How much does it cost?
Audio recordings are counted by duration and the app shows the cost before you send. When you sign up you get 2 free credits.
How can the recipient verify the audio?
With the ZIP package and the TrueScreen verification page: the check runs in the browser and nothing is uploaded.
Certify your first audio recording
Sign up and get 2 free credits.
