He rose to national attention in the USA after a private arbitration panel in April, 2023 ruled that Zeidman had proved material provided by Mike Lindell was not data from the 2020 presidential election.

Zeidman also consulted on court cases in disputed intellectual property, including Brocade v. A10 Networks, for which he testified at trial, ConnectU v. Facebook (on which the movie, The Social Network, is based), and Texas Instruments v. Samsung Electronics, which resulted in an award to his client of over $1 billion.

The company's patented product SynthOS software automatically synthesizes optimized source code for a custom real time operating system.

[13] In December 2013, Zeidman founded Firtiva, a video-on-demand website to provide commercial-free content while sending second screen advertisements to a highly targeted audience.

[15][1] Among the material was a flow chart of how elections work, a list of IP addresses, and a stream of random numbers and letters.

[1] He also found that much of the material had a file creation date from shortly before the symposium, precluding it from being from the election held almost nine months before.

[17] Zeidman agreed to withdraw his other claims that Lindell's rules were unconscionable and that he had violated the Minnesota Consumer Fraud Act on condition of payment.

"[1] He did not rule out voting for Trump a third time, but invoked the ongoing Republican primary race and said, "I hope I have another choice in the upcoming election.

"[15] At the time of the arbitration panel's ruling Lindell was being sued for defamation by Dominion Voting Systems (for $1.3 billion) and separately by one of their former executives.

[21][22] Zeidman told reporters he plans to donate the money to non-profits committed to election security and intends to write a book about the experience.