BlockBeats News, April 8th. According to on-chain analytics platform Bubblemaps, a batch of affiliated Polymarket accounts profited approximately $600,000 in the U.S.-Iran ceasefire-related prediction last night, after which these accounts collectively changed their names.Further tracking shows that this group of accounts has been consistently betting on the ceasefire issue recently. Among them, in two prediction events on April 7th and April 15th, they bet $25,000 (corresponding to a 6% probability) and $75,000 (corresponding to a 15% probability) respectively. The total profit from these two transactions was approximately $563,000.It is worth noting that about a month ago, Bubblemaps had previously flagged four on-chain accounts on Polymarket. Not only did these accounts have abnormally high win rates, but their series of previous prediction results were also quite indicative— including accurately betting on the U.S. launching a strike against Iran on February 28, 2026, Israel initiating the "Rising Lion" operation in Iran on June 13, 2025, and the U.S. attacking an Iranian nuclear facility on June 21, 2025.Although this group of accounts' performance on ceasefire predictions was not entirely accurate, their high accuracy in previous bets on events such as the Iran strike demonstrates that they may have access to more reliable information sources than the public market. Furthermore, the cluster's behavior of continuously changing account names has also increased speculation about their background.