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rules

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Tin nhanh

The Brazilian central bank requires cryptocurrency service providers to undergo financial audits and tightens licensing rules

According to Bits.media, the Central Bank of Brazil has tightened the licensing rules for virtual asset service providers, requiring them to undergo independent financial audits before obtaining operational licenses starting June 1. The auditing firms must not only examine the company's financial status but also review its compliance with anti-money laundering and counter-terrorism financing regulations, including whether the platform separates its own funds from customer assets, its risk management practices, and employee training. Auditors must be registered with the Brazilian Securities Commission. Cryptocurrency exchanges, brokerage firms, and custody services applying for a license for the first time must comply with these requirements from the start of the registration process, and companies that already hold licenses must also pass independent audits when renewing.Brazil first clarified in legislation in 2022 that virtual asset services are regulated by the central bank, establishing a category for licensed virtual asset service providers in November 2025. Additionally, Brazil recently imposed a complete ban on 28 betting and prediction market platforms, including Polymarket and Kalshi, on the grounds that they did not comply with local derivatives trading requirements. Starting October 1, Brazilian electronic foreign exchange providers will be prohibited from using cryptocurrencies for international remittances.

The Korean FSC is reviewing whether Hana Bank's acquisition of Dunamu shares violates regulatory rules

According to iNews24, the Financial Services Commission (FSC) of South Korea is reviewing whether Hana Bank's acquisition of Dunamu shares violates the "separation of finance and virtual assets" regulatory rules. The virtual assets department of the Financial Services Commission stated that Hana Bank indirectly holds shares in Dunamu through its acquisition of Kakao Investment shares, which is essentially an investment in a virtual asset exchange and will be examined under the same standards.Since 2017, the South Korean government has prohibited financial institutions from holding, purchasing virtual assets, or making equity investments through administrative guidance. If a violation occurs, Hana Bank may not be able to complete the transaction. Future Asset Consulting is advancing the acquisition of Kobit's operating rights, and Korea Investment & Securities is also taking a cautious approach. Hana Bank previously announced the acquisition of a 6.55% stake in Dunamu but did not consult with the authorities beforehand.Currently, the "separation of finance and virtual assets" regulation has not yet been codified into law, and it is uncertain whether related provisions will be included in the digital asset bill. Legislative discussions may advance after the National Assembly reconvenes in September at the earliest.

DeFi community jointly writes to the SEC requesting the establishment of rules to clarify the regulatory framework

The DeFi Education Fund, along with Aave Labs, Uniswap Labs, Paradigm, Andreessen Horowitz, and other organizations, has sent a letter to the U.S. SEC in response to the recent statement released by the trading and markets division regarding the registration of "non-custodial user interface" brokers for crypto asset securities.The signatories support the statement that the "non-custodial user interface," which only provides a technical entry point and allows users to manage their assets independently, should be excluded from broker registration. They also urge the SEC to establish clearer and more sustainable definitions of "broker" through formal rulemaking, to avoid incorrectly categorizing neutral software tool providers, validators, RPC/API, oracles, cloud services, and other infrastructure under broker regulations. This would provide long-term legal certainty for blockchain infrastructure innovation while ensuring investor protection.Previously, the SEC's trading and markets division indicated that some DeFi trading interfaces do not need to register as brokers, allowing for policy space for related applications. Supporters believe that the new regulations could cover infrastructure participants such as validators, APIs, and oracles. Currently, the U.S. crypto market legislation, the CLARITY Act, is stalled in the Senate.

Coinbase upgrades its anti-fraud system, integrating machine learning with a rules engine, reducing response time to a few hours

Coinbase stated that it is optimizing the rule creation process in its anti-fraud system by integrating machine learning models with a rules engine, achieving more efficient risk management. It also proposed a dual-track strategy of "models responsible for long-term defense, rules responsible for rapid response," and built a unified framework to create a feedback loop between the two: rules are used to capture new types of fraud and train the model in reverse, thereby continuously enhancing overall defense capabilities.In terms of specific optimizations, Coinbase has transformed the previously manual rule creation process into a data-driven and automated recommendation system by restructuring data, automating schema evolution, and introducing notebook-based analytical tools, significantly improving efficiency. Among these improvements, the performance of rule backtesting has increased by more than 10 times, and the overall response time has been reduced from several days to a few hours. Additionally, the new system uses machine learning to recommend parameters, helping to reduce false positive rates while combating fraud and minimizing the impact on normal users. Coinbase indicated that the next step will be to advance event-driven automatic rule generation and explore the "one-click conversion" of efficient rules into model features, further moving towards an automated risk management system.
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