Legal notice
Legal information about the Cours Sigma website, in accordance with applicable obligations.
Site publisher
This site is published by Antony Rocher, a sole proprietor registered in the Russian Federation, who teaches private lessons under the name Cours Sigma.
Publication manager: Antony Rocher.
Contact: via the contact form on the site.
Sole proprietor (IP) Antony Rocher
Tax ID (INN): 770179081260
Registration number (OGRNIP): 326774600605692
Website: cours-sigma.fr
No payment is taken on this site: booking a slot is free and without commitment. Lessons are paid separately — see “Payment methods” below.
Payment methods
Payment is made by bank transfer, against an invoice issued before the lesson.
Hosting
This site is hosted by Yandex Cloud LLC (ООО «Яндекс.Облако»), on its Yandex Object Storage service.
OGRN 1187746678580, INN 7704458262
16 Lva Tolstogo Street, premises 528, 119021 Moscow, Russia
Phone: +7 495 739-70-00 — yandex.cloud
Intellectual property
All content on this site (text, layout, graphic elements) is the property of Cours Sigma unless stated otherwise. Any reproduction, representation or distribution, in whole or in part, without prior written permission, is prohibited.
Personal data (GDPR)
The information submitted through the contact form (name, e-mail address, message) is used solely to reply to your request. It is never sold or passed on to third parties. Under the General Data Protection Regulation, you have the right to access, correct and delete your data: simply request it via the contact form.
Appointment booking is handled by Cal.com, which processes booking data under its own privacy policy. Contact form submissions are forwarded by a Yandex Cloud Functions function, which sends your message by e-mail to Antony Rocher through Yandex Cloud Postbox. Your data is processed on Yandex Cloud infrastructure in Russia, solely to reply to you, and is not kept beyond that e-mail.
Cookies
This site uses no advertising or tracking cookies. Only technical cookies required for the booking module (Cal.com) to work may be set when it is used.
Last updated: August 2026.