Well, sort of. 
Its lyrics indeed date back to around 1570, but it didn’t become the national anthem until 1932. IIRC, the music was written somewhere in the 18th century - before that it was a mere poem.
Some more Dutch trivia!
KLM is the oldest continuous operating airline in the world, having been founded in 1919.
The most common reason coffee shops in Amsterdam are fined is the illegal sale of alcohol. An alcohol permit costs money, both in fees and in training of staff, so a lot of the smaller coffee shops don’t have them. You’ll get an empty non-alcoholic beer bottle in front of you, and a glass filled with actual beer from a bottle, poured out behind the bar. So, you can be sitting in a place smoking a joint, and the cops bust the place to fine the owner for selling booze without a permit. 
Holland was the first nation in the world to allow gay marriages.
The city of Amsterdam, whilst old-looking, is actually fairly young, being about 800 years of age. The oldest city in the current Netherlands is Maastricht, founded by the Romans around 0 BC.
The Amsterdam Stock Exchange is the oldest in the world, dating back to the 16th century.
Tulips are NOT from Amsterdam, or from the Netherlands to begin with. They’re originally from Turkey. Like with so many things, all we did was buy cheap and sell dear. Now, they’re synonymous with the country like windmills and wooden shoes are.
Heineken is the second largest brewing conglomorate in the world, right after Anheuser Bush.
The Delta Works protect the Dutch province of Zeeland from being flooded during severe storms. It is undoubtedly one of the greatest masterpieces in modern engineering, worldwide.
The Dutch are the second most sexually active people in Europe, behind the French. Don’t be misled by our stoic Northern demeanor and looks. 
The Dutch are the tallest people in the world, on average, trumping even the Swedes and Danes. We also have one of the highest life expectations.
The Netherlands is twice the size of New Jersey, yet 16 million people call it home. Apart from a few freak states like Monaco, it is the second most densely populated country in the world, after Singapore.
And the best bit of trivia from a tourist’s perspective: the Dutch love to show of their language skills, and like nothing better than to be complimented on it. Seriously. 