Crypto exchange Coinbase aired its first Super Bowl ad, and it definitely got people talking—and scanning.

The 60-second spot features a QR code changing colors and bouncing across the screen, a la the infamous DVD logo. And that’s it, that’s pretty much the whole thing.

Coinbase’s marketing team must be patting themselves on the back because interest was so high that some of those going to the website to sign up got error messages. Coinbase worked with agency Accenture Interactive on its Super Bowl ad. 

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The QR code directs viewers to a page on Coinbase’s website that offers $15 in free bitcoin for signing up. The page includes a countdown clock for the offer, which expires at 12:30 PM PST on Feb. 15. For those who already have an account, they can opt-in to the platform’s $3 million bitcoin giveaway. Entry to the sweepstakes ends at 11:59 PM PST on Feb. 27.

Coinbase’s ad may have come as a surprise to many, considering it didn’t announce its Super Bowl plans like other crypto platforms.

On social media, the spot quickly garnered buzz from both consumers and brands. Many described the ad as “bold” and “clever,” and “Coinbase” was trending with over 8,400 tweets at the time of writing.

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Yet the ad’s buzz didn’t stop brands from spoofing it. TurboTax tweeted a similar QR code that cheekily brought users to its own homepage. The post subtweeted Coinbase with the peep eyes emoji.

Planters' Mr. Peanut character tweeted a bouncing peanut with the caption, “What did the QR code say? I was busy getting snacks.”

Watch the ad below: