[1] In January 2022, Forbes estimated the stakes in OpenSea owned by Finzer and his co-founder Alex Atallah to be worth $2.2 billion each, making them the first two non-fungible token billionaires.

In his junior year at Brown, Finzer worked with future Figma founder Dylan Field to create CourseKick, a socially-oriented search engine for university course registration.

[4][10] Finzer co-founded two tech start-ups, including Claimdog, a personal finance app acquired by Credit Karma for an undisclosed amount.

With Alex Atallah, Finzer developed and pitched WifiCoin, which would offer tokens in exchange for sharing access to a wireless router.

[13] In January 2022, Forbes estimated the stakes in OpenSea owned by Finzer and his co-founder Alex Atallah to be worth $2.2 billion each, making them the first two non-fungible token billionaires.