Martin Kaptein

Martin Kaptein

Contact information


I speak English, Dutch, German and Russian. Additionally I understand some French and Italian.


It is recommended to encrypt your mails and other messages with the following public key:

Download key

Key fingerprint:

E085 84C5 E2E7 4A8A B26D  76EE D813 481D F7B4 984E


My Session ID:


Session QR code:

Session QR code

Session QR code

If you don’t yet have Session, you can get Session here. It works on all platforms, it is free and very secure.

I am usually faster at answering when you contact me via Session.

Monero (XMR)

It is preferable for everyone to donate using Monero (XMR) as opposed to other cryptocurrencies like Bitcoin. Monero provides a lot more privacy.

My Monero address:


Same address as QR code:

Monero address QR code

Monero QR code address

Thank you for your donations!

Classical piano lessons in the region of Den Bosch, Vught and Tilburg