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It was a celebrity-filled Super Bowl.

We saw Tim Cook striking a . We saw Taylor Swift and a drink. And we saw Jack Dorsey in a t-shirt that’s making waves on X, formerly known as Twitter.

Dorsey — the cofounder and former CEO of the platform — was photographed in the stands sitting with Beyonce and Jay-Z.

The tech mogul’s choice of clothing is attracting as much attention as his A-list companions (and, oh yeah, the they were at). That’s because Dorsey can be seen sporting a black t-shirt that says “Satoshi” in yellow lettering.

JUST IN: Jack Dorsey spotted wearing a Satoshi shirt at the ?

— Bitcoin Magazine (@BitcoinMagazine)

Two things to note here:

1. Satoshi Nakamoto is said to be the inventor of bitcoin. Very little is known about Satoshi, including, even, whether Satoshi is a person or a group of people, but he is with writing the original white paper on bitcoin.

2. The shirt is a riff on the iconic , which — much like Satoshi — has similarly apocryphal origins.

made an appearance after all!

— ?φ? (@phisharkk)

Dorsey has been a vocal supporter of bitcoin for years. In 2021, he tweeted,

He was involved in a public and drawn-out spat with , the cofounder of Ethereum, over which of the two cryptocurrencies is better.

In June 2022, he and Jay-Z launched , a free, 12-week education course for people living in Marcy Houses, the public housing complex in Brooklyn where Jay-Z grew up.

The two have been spotted together over the years in places ranging from the Hamptons to Hawaii. In March 2021, Dorsey’s Square bought a for nearly $300 million. (For more on , check out this handy history of their relationship my colleague Avery Hartmans wrote a couple of years ago.)

If you were hoping to get your hands on one of those shirts yourself, , as usual, has your back. At the time of writing, though, that exact item was already in 15 carts, so if Dorsey is your personal style icon, you’d better hurry.