The city of Duyun in Guizhou, China is exploring a method for handling seized virtual currencies, where the assets are frozen and then confiscated to a cold wallet for physical isolation.

By: theblockbeats.news|2025/08/17 20:42:04
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BlockBeats News: After China strictly banned cryptocurrency trading in 2021, handling and disposal of involved cryptocurrencies has become a thorny issue for public security bureaus across the country. Recently, a journalist from China News Service followed the Ministry of Public Security's "Guardianship in the Sun" rule of law public security thematic publicity event media interview team into the Joint Custody Center of Involved Property in Duyun City, Qiannan Buyei and Miao Autonomous Prefecture, Guizhou Province, to understand the local public security's practical approach to preserving involved cryptocurrencies.

During their investigations, the public security organs found that some criminal suspects had converted their illegally obtained proceeds into cryptocurrencies. In the process of sealing the assets, the Duyun public security authorities froze the involved cryptocurrencies, placed them in a cold wallet physically isolated within the public security authority, and stored them in the Joint Custody Center of Involved Property in Duyun City awaiting court judgment.

The exploration by the Guizhou Duyun public security has provided a "train of thought" for preserving involved cryptocurrencies, while regions are still searching for better solutions. It is reported that the Duyun public security has been focusing on the difficulties in preserving, transferring, and disposing of involved property, actively exploring reforms in the management of involved property, and promoting the establishment of cross-departmental Joint Custody Centers of Involved Property. Since its completion and operation in November 2022, the center has received 24,753 involved items, over 20.4955 million RMB of involved funds, and has centrally kept more than 7,000 case files.

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Mixin has launched USTD-margined perpetual contracts, bringing derivative trading into the chat scene.

The privacy-focused crypto wallet Mixin announced today the launch of its U-based perpetual contract (a derivative priced in USDT). Unlike traditional exchanges, Mixin has taken a new approach by "liberating" derivative trading from isolated matching engines and embedding it into the instant messaging environment.


Users can directly open positions within the app with leverage of up to 200x, while sharing positions, discussing strategies, and copy trading within private communities. Trading, social interaction, and asset management are integrated into the same interface.


Simplified Trading Experience: No KYC Required, Opening a Position in Five Steps


Based on its non-custodial architecture, Mixin has eliminated friction from the traditional onboarding process, allowing users to participate in perpetual contract trading without identity verification.


The trading process has been streamlined into five steps:

· Choose the trading asset

· Select long or short

· Input position size and leverage

· Confirm order details

· Confirm and open the position


The interface provides real-time visualization of price, position, and profit and loss (PnL), allowing users to complete trades without switching between multiple modules.


Social-Native Trading: Strategy and Execution Completed in the Same Context


Mixin has directly integrated social features into the derivative trading environment. Users can create private trading communities and interact around real-time positions:

· End-to-end encrypted private groups supporting up to 1024 members

· End-to-end encrypted voice communication

· One-click position sharing

· One-click trade copying


On the execution side, Mixin aggregates liquidity from multiple sources and accesses decentralized protocol and external market liquidity through a unified trading interface.


By combining social interaction with trade execution, Mixin enables users to collaborate, share, and execute trading strategies instantly within the same environment.


Referral Mechanism: Non-institutional users can receive up to 60% fee split


Mixin has also introduced a referral incentive system based on trading behavior:

· Users can join with an invite code

· Up to 60% of trading fees as referral rewards

· Incentive mechanism designed for long-term, sustainable earnings


This model aims to drive user-driven network expansion and organic growth.


Self-Custody Architecture and Built-in Privacy Mechanism


Mixin's derivative transactions are built on top of its existing self-custody wallet infrastructure, with core features including:


· Separation of transaction account and asset storage

· User full control over assets

· Platform does not custody user funds

· Built-in privacy mechanisms to reduce data exposure


The system aims to strike a balance between transaction efficiency, asset security, and privacy protection.


A New Path for On-Chain Derivatives


Against the background of perpetual contracts becoming a mainstream trading tool, Mixin is exploring a different development direction by lowering barriers, enhancing social and privacy attributes.


The platform does not only view transactions as execution actions but positions them as a networked activity: transactions have social attributes, strategies can be shared, and relationships between individuals also become part of the financial system.


Regulatory Background


Mixin's design is based on a user-initiated, user-controlled model. The platform neither custodies assets nor executes transactions on behalf of users.


This model aligns with a statement issued by the U.S. Securities and Exchange Commission (SEC) on April 13, 2026, titled "Staff Statement on Whether Partial User Interface Used in Preparing Cryptocurrency Securities Transactions May Require Broker-Dealer Registration."


The statement indicates that, under the premise where transactions are entirely initiated and controlled by users, non-custodial service providers that offer neutral interfaces may not need to register as broker-dealers or exchanges.


About Mixin


Mixin is a decentralized, self-custodial privacy wallet designed to provide secure and efficient digital asset management services.


Its core capabilities include:

· Aggregation: integrating multi-chain assets and routing between different transaction paths to simplify user operations

· High liquidity access: connecting to various liquidity sources, including decentralized protocols and external markets

· Decentralization: achieving full user control over assets without relying on custodial intermediaries

· Privacy protection: safeguarding assets and data through MPC, CryptoNote, and end-to-end encrypted communication


Mixin has been in operation for over 8 years, supporting over 40 blockchains and more than 10,000 assets, with a global user base exceeding 10 million and an on-chain self-custodied asset scale of over $1 billion.


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