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Polymarket will upgrade the settlement rules for the cryptocurrency rise and fall market: abandoning the single price snapshot and switching to a time-weighted average price

According to official news, the prediction market Polymarket announced a significant adjustment to its settlement mechanism for cryptocurrency price fluctuation markets starting from August 7, to protect market integrity. From midnight UTC on that day, the affected markets will no longer settle based on a single price snapshot at a specific time but will instead use a time-weighted average price.Markets of different durations correspond to different TWAP windows: all cryptocurrency 5-minute markets will use a 30-second TWAP, 15-minute markets will use a 60-second TWAP, and 4-hour markets will also use a 60-second TWAP. The previous single snapshot settlement method was prone to price manipulation during periods of low liquidity, and this change is a proactive reinforcement of the market integrity system by Polymarket after facing regulatory scrutiny.To support this transition, Polymarket will inject $1 million in liquidity rewards into all affected markets throughout August. On the technical side, Chainlink TWAP testnet data streams are now available, and mainnet data streams along with Polymarket real-time data stream services will go live on August 4, at which point developers can access TWAP prices directly through Chainlink Data Streams or Polymarket's public WebSocket.

The investigation into the French crypto kidnapping case has uncovered a transnational money laundering network, with ransom flowing to wallets in Venezuela

The French newspaper "Le Monde" revealed that there has been new progress in the investigation of a cryptocurrency-related kidnapping case that occurred in 2023. French law enforcement discovered a transnational money laundering network involving multiple countries and cryptocurrency wallets while tracing the flow of a €1.7 million cryptocurrency ransom. The victim was the father of the well-known crypto influencer "TeufeurS." The kidnappers threatened the victim's family via text messages and demanded ransom payment in cryptocurrency. Ultimately, TeufeurS transferred a total of €1.7 million to the kidnappers' designated wallet in two installments, after which his father was released.The investigation showed that part of the ransom flowed into wallet accounts controlled by foreign nationals after multiple transfers. One transfer of $131,000 was successfully traced by the French gendarmerie, with leads ultimately pointing to a cryptocurrency wallet controlled by Venezuelan nationals. The case further revealed the complex chain of money laundering utilized by criminal organizations through cross-border cryptocurrency transfers, anonymous wallets, and overseas platforms. The report stated that this case is considered one of the significant examples of kidnapping and extortion cases in the European cryptocurrency industry and may serve as an early template for multiple kidnapping cases targeting cryptocurrency practitioners in France and Europe in 2025.

A family in France was the victim of a gunpoint invasion and kidnapping, with 700,000 euros in encrypted assets being looted

According to French media reports, on the morning of April 20 local time, a malicious "targeted robbery of crypto assets" occurred in Ploudalmézeau, France: two masked gunmen broke into a residence, controlling and binding a family of five (including two children and two elderly individuals) for several hours, ultimately coercing the victims to transfer approximately 700,000 euros worth of cryptocurrency.The incident took place in a residential community in broad daylight, and the suspects were clearly "well-prepared," having a thorough understanding of the victims' crypto asset holdings. Police initially determined that this case represents a typical new crime model of "offline violence + on-chain transfer," where personal threats are used to forcibly obtain private keys or transfer authorizations.It is noteworthy that the family members of the victims were engaged in work related to the crypto industry, which may have been a significant reason for this targeted crime. The case is still under investigation, and the suspects have not yet been arrested.This incident once again highlights that, against the backdrop of the increasing popularity of crypto assets, "physical world attacks" (such as kidnapping and home invasion) are becoming new security risk points, and personal asset security is no longer limited to on-chain protection.
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