Former OpenSea manager sentenced in NFT insider trading case

Prosecutors had sought a far longer sentence following a guilty verdict in the first case tie to NFT insider trading

article-image

sakhorn/Shutterstock modified by Blockworks

share

A judge sentenced Nathanial Chastain, the former OpenSea manager who front-ran his employer’s NFT listings, to three months in prison on Tuesday. 

Chastain, a former OpenSea manager, was convicted in a New York court in May, found guilty on charges of wire fraud and money laundering. The jury’s verdict cemented the first known insider trading-like case in the NFT sector. 

Prosecutors had sought roughly 21 to 27 months for Chastain’s sentencing. The value of the ether (ETH) proceeds Chastain earned have fluctuated wildly in tune with the market, making pinning down his precise ill-gotten gains more difficult. 

Chastain made roughly $50,000 “using his knowledge of confidential information to purchase dozens of NFTs in advance of them being featured on OpenSea’s homepage,” the FBI said in 2022. 

Chastain was charged with a count of wire fraud and a count of money laundering that same year.

NFTs might be new, but this type of criminal scheme is not,” US Attorney Damian Williams said at the time. 

Chastain resigned from OpenSea back in 2021, with OpenSea going on to say that it would impose new practices to prevent similar future misconduct. Chastain’s lawyer had previously argued that he did not violate any company rules with his trades.

Chastain’s defense claimed the case was “unfair” prior to the start of the trial, but the judge overseeing the case denied his motions, allowing the case to proceed.

 “Put simply, the trial in this case is about whether Chastain committed the charged crimes; it is not about whether the prosecution is fair or unfair,” Judge Jesse Furman then said.


Get the news in your inbox. Explore Blockworks newsletters:

  • Blockworks Daily: The newsletter that helps thousands of investors understand crypto and the markets, by Byron Gilliam.
  • Empire: Start your morning with the top news and analysis to inform your day in crypto.
  • Forward Guidance: Reporting and analysis on the growing intersection of crypto and macroeconomics, policy and finance.
  • 0xResearch: Alpha directly in your inbox. Market highlights, data, degen trade ideas, governance updates, token performance and more.
  • Lightspeed: Built for Solana investors, developers and community members. The latest from one of crypto’s hottest networks.
  • The Drop: For crypto collectors and traders, covering apps, games, memes and more.
Tags

Upcoming Events

Industry City | Brooklyn, NY

TUES - THURS, JUNE 24 - 26, 2025

Permissionless IV serves as the definitive gathering for crypto’s technical founders, developers, and builders to come together and create the future.If you’re ready to shape the future of crypto, Permissionless IV is where it happens.

Old Billingsgate

Mon - Wed, October 13 - 15, 2025

Blockworks’ Digital Asset Summit (DAS) will feature conversations between the builders, allocators, and legislators who will shape the trajectory of the digital asset ecosystem in the US and abroad.

recent research

Research

article-image

10T Holdings’ Dan Tapiero predicts crypto listings on exchanges are a “mini step” for value moving onchain

article-image

The S&P 500 was mostly flat after a month of losses, and the Nasdaq has been slowly gaining

article-image

Movement Labs is once again at the core of some criticism after it declined to name a market maker offboarded by Binance

article-image

Experts discuss the future of crypto ETFs as Trump puts “money where his mouth is”

article-image

Luke Barwikowski took to Twitter to raise awareness about the threats against him and his family

article-image

David Chaum’s ecash in the 90s offers insights into balancing priorities in DeFi today