ZK Shark founded Ordinal Maxi Biz (OMB), a collection of hand-drawn Bitcoin Ordinals inscriptions, in 2023 together with the artist Tony Tafuro. Tafuro drew the collection's roughly sketched heads, each carrying eye-color traits tied to the Bitcoin block on which it was inscribed. Nullish also contributed to the project.
Some CryptoPunk holders burned their Ethereum NFTs in 2023 to secure spots on the project's allowlist. The collection grew to 5,141 hand-drawn one-of-one inscriptions by April 2024. That month, Christie's opened an online sale featuring Ordinal Maxi Biz (OMB) works chosen by ZK Shark, alongside pieces by Tony Tafuro and berkin bags. The Toledo Museum of Art accepted a gift of an Ordinal Maxi Biz (OMB) inscription, citing its relevance to the museum's numismatics collection.
