The Digital Asset Bill #数字资产法案 is a legal provision for the regulation and supervision of activities related to digital assets. Below are some recent introductions to relevant digital asset bills in the United States:

Arizona's Strategic Digital Asset Reserve Act (SB1373)

- Core Content: Allows the state treasury to invest up to 10% of public funds in digital assets such as Bitcoin. Funding sources include government appropriations and seized crypto assets, establishing a 'mixed custody mechanism,' with 50% of assets stored in the Federal Reserve System and 50% directly controlled by the state government via private keys. 30% of the digital asset profits are used to supplement the education fund.

- Legislative Background: Arizona's pension fund has had a real yield below the inflation rate for five consecutive years, while Bitcoin's annual return has been high during the same period; leveraging the Trump administration's cryptocurrency-friendly policy window; the state has built a government-level blockchain platform based on Hyperledger, with mature technical facilities.

- Potential Impact: May give rise to a new track of 'government-level digital asset custody,' promoting innovation in the tax system, etc.

Texas SB - 21 Bill

- Core Content: Allows the allocation of $250 million from the Economic Stability Fund to establish a Bitcoin reserve, with plans to expand to $50 billion within five years.

- Legislative Background: The state has attracted several mining companies to establish North America's largest mining center, relying on its cheap energy advantage.

North Carolina's Digital Asset Investment Act (HB92)

- Core Content: Authorizes the state treasury to invest in qualified digital assets, adjusting the investment limit for digital assets to 5% of the total fund amount.

- Legislative Background: As the digital asset market develops, the state government hopes to explore the reasonable use and regulatory management of digital assets.

In addition, Russia also has a related Digital Financial Assets Law. This law explicitly recognizes digital financial assets as property, legalizing cryptocurrency trading in Russia, setting investment trading rules for cryptocurrencies, and specifying the characteristics, issuance rules, trading rules, and regulatory agencies for digital financial assets.