Legal notice
Who publishes this site, who keeps the machine it runs on, and where to write. Last changed 18 August 2026.
The publisher
- Name
- Arnaud Botton
- Form
- Entrepreneur individuel (EI)
- Address
- 139 rue Bugeaud, 69006 Lyon, France
- hello@opusdsp.com
- Registration
- SIREN 924 587 736
- Responsible for what is published
- Arnaud Botton
The host
This site runs on Railway Corporation, 548 Market Street, PMB 68956, San Francisco, CA 94104, United States — railway.com.
What is ours
MOTION, its interface, its code, its presets and its sounds, everything written on this site, and the name and mark Opus DSP. Buying a licence gives you what the terms say it gives you and nothing else. The typeface is Space Grotesk, used under its own licence.
Complaints and disagreements
Write to hello@opusdsp.com and you will get a person, usually the same day. The courts remain open to you in any case.
Data
What we hold about you, why, and how to have it deleted is on the privacy page. One cookie keeps you signed in, and Google Analytics counts visits.
See also the terms and the privacy page.