Jury selection began in Manhattan federal court on April 8, 2024, in the criminal trial of Avraham Eisenberg over the October 2022 Mango Markets trading episode. The Southern District of New York’s official calendar listed *United States v. Avraham Eisenberg*, case 23-cr-10, as a jury trial before Judge Arun Subramanian at 9:00 a.m.; contemporaneous courtroom reporting confirmed that jury selection occupied most of the first day.
The proceeding mattered beyond one trader and one damaged venue. Prosecutors were asking a jury to apply federal commodities-fraud, commodities-manipulation and wire-fraud law to trades executed through a decentralized-finance protocol. On April 8, the charges were allegations, Eisenberg had pleaded not guilty, and no verdict had been reached.
The transaction the jury would examine
Mango Markets was a Solana-based decentralized exchange where users could trade spot cryptoassets and perpetual futures and could borrow against collateral. The disputed instrument was a MNGO-USDC perpetual: a contract tracking the relative value of Mango’s MNGO governance token and the USDC stablecoin without an expiry date.
The January 9, 2023 federal indictment alleged that Eisenberg controlled both sides of a large perpetual-futures trade through two accounts, then bought MNGO in outside spot markets to raise the oracle price used by Mango Markets. According to the indictment, the price of MNGO perpetuals rose approximately 1,300%, increasing the apparent collateral value of his long position and enabling withdrawals of approximately $110 million in various cryptocurrencies.
Those figures were the government’s case, not an independently reconstructed Coinburn market series. A separate Commodity Futures Trading Commission complaint described a less-than-30-minute window on October 11, 2022 in which the Mango oracle price moved from about $0.04 to $0.54 per MNGO. The CFTC alleged that more than 400 million MNGO-USDC swaps, initially sized at approximately $19 million, became collateral for $114 million of borrowing. The difference between the indictment’s approximately $110 million and the CFTC’s $114 million reflects different agency descriptions; it should not be flattened into a single exact loss figure.
Why a DeFi trial carried institutional weight
The core legal dispute was not whether software processed the transactions. It was whether conduct that a protocol mechanically permitted could still satisfy the elements of manipulation and fraud. Eisenberg had publicly maintained after the transaction that his actions were lawful open-market trades using the protocol as designed. Prosecutors alleged instead that the paired accounts, spot purchases and resulting withdrawals formed a deceptive scheme.
That distinction made the trial an important test for DeFi’s recurring “code is law” argument. Smart contracts can determine whether a transaction executes, but execution alone does not decide whether the people directing it complied with commodities and fraud statutes. At the same time, an unusual or aggressive trade is not automatically criminal: the government still had to prove every charged element beyond a reasonable doubt.
The case also exposed how oracle design and thin liquidity can transmit a spot-market move into leveraged collateral. The CFTC’s complaint said Mango’s oracle drew prices from three outside exchanges. If a relatively illiquid token could be moved sharply at those venues, positions valued by that oracle could expand borrowing power inside the protocol. That was the alleged mechanism the jury was being asked to understand, not a general finding that all perpetuals, oracles or decentralized exchanges function the same way.
What was unresolved on April 8
April 8, 2024 established the start of jury proceedings, not guilt, damages or a final rule for decentralized finance. The criminal case was separate from civil actions brought by the CFTC and Securities and Exchange Commission, and the existence of parallel claims did not resolve the criminal charges. The event-day record supported a narrower conclusion: a federal jury was beginning to consider whether an openly executed DeFi strategy could constitute conventional market manipulation and fraud under existing law.
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