Demian Koopman 🇳🇱
35 profile views · Last seen 6 month(s) ago
Verify this profile
Please log in
About
- Training since first belt1 year(s) and 0 month(s)
- BirthdayMay 19, 198937 years old
- LocationNieuwveen, Netherlands
- AcademyUNDERHOOK SOCIETY Verified
- Member sinceSeptember 20251 year on Beltchecker.com
Achievements
0 of 18 unlockedProfile manually reviewed & certificate issued
Current rank verified by promoting instructor
Name verified by credit card
Verifications received4 / 10
102550
Years trained1 / 5
5101520
Gold medals0 / 5
51025
Competition matches0 / 10
1050100
Forum posts0 / 500
5001,000
Wall
Please log in
No messages yet.
Promotion history
Please log in
- 6 months, 26 days
Blue belt Current belt
March 5, 2026Lisse
Promoted byIwan Hansen 
5 months, 18 daysWhite belt
September 15, 2025Lisse
- Stripe 1May 29, 2025
- Stripe 2May 29, 2025
- Stripe 3October 9, 2025
- Stripe 4November 27, 2025
Votes received for current rank
Please log in
"Good to go congrats on the blue"
"Demian Rocks, It's great to witness his growth up close because I see him train hard every week. Yesterday was his first tournament and he won silver straight away. He uses less force these days and has a beautiful style."
"Looks Legit - Congrats on the Blue🤙"
"Team mate. Tireless powerhouse. Slowly becoming a nightmare on the mats as his technical knowledge increases."
