Advances in compact proofs have erased Poseidon’s previous performance advantage, according to researcher Justin Drake. The Ethereum Foundation is moving away from the Poseidon hash function in its planned post-quantum architecture, according to researcher Justin Drake. On Thursday, Drake said the foundation was abandoning Poseidon and turning to established alternatives such as SHA or BLAKE. A hash function converts data into a fixed digital fingerprint, enabling computers to check that information has not been altered. Poseidon had been considered for future post-quantum systems such as leanVM, which would help Ethereum efficiently verify large volumes of blockchain activity. Those systems have not yet been deployed on mainnet. Read more
The city’s complaint over gambling laws and deceptive trade practices included Robinhood, Webull and Coinbase as partners with prediction market platform Kalshi. The City of Baltimore and its mayor, Brendan Scott, filed lawsuits against Kalshi and Polymarket over allegations that the companies violated local gambling laws. In a Thursday notice, the Baltimore mayor’s office said that the two prediction market companies operated “illegal, unlicensed sports-betting platforms” and misled users about the ”legality and regulatory status of their products.” The lawsuits are centered on claims disputing Kalshi’s and Polymarket’s characterization of event contracts, arguing that the trades amount to unlawful wagers under state laws. “These companies are running sportsbooks without licenses and betting that a new label will put them above the law,” said Scott. “It won’t. Baltimore will not let multibillion-dollar companies put profits over people and harm our communities through illegal gambling.” Read more
KPMG’s audit covered Tether’s 2025 financial statements and found its reserves exceeded liabilities by $6.8 billion. Tether completed the first full independent audit of its annual financial statements, with KPMG US issuing a clean opinion on the stablecoin issuer’s 2025 accounts. The audit covered Tether’s balance sheet, income statement and cash flows for the year ended Dec. 31, 2025, including the assets backing its issued tokens and the liabilities they represent. Tether said the audited statements showed reserves exceeding liabilities by $6.814 billion. Unlike Tether’s quarterly reserve attestations, which it has published for years, the full audit subjected the company’s broader financial statements and underlying evidence to independent examination, including transactions, systems, ownership records, valuations and counterparties. Read more
More than a year after being indicted on fraud charges related to his activities at crypto company Delio, Jeong Sang-ho faces prison time in South Korea. A judge in South Korea reportedly sentenced Delio CEO Jeong Sang-ho to 15 years in prison after he was found guilty of defrauding users out of about $50 million in crypto. According to a Thursday report from South Korean news outlet Newsis, the 11th Criminal Division of the Seoul Southern District Court sentenced Jeong after his conviction on charges related to embezzlement and the use of a false trading license, but the CEO received no detention for defrauding users of $175 million. “While operating Delio, [Jeong] falsely obtained a virtual asset trading license and defrauded victims of approximately 70 billion won [$49.3 million] in virtual assets,” said the court, adding: Read more