Bill HB639 (also known as the 'Blockchain Fundamentals Act'), proposed in New Hampshire, USA, has completed the official registration process. The bill stipulates that state and local governments cannot restrict individuals from using digital assets for payments or holding assets through self-custody wallets. Furthermore, imposing additional taxes simply for using digital assets is prohibited. In addition, individuals or businesses operating nodes on blockchain networks or participating in mining and staking activities are not required to obtain a money transmitter license, and such activities are explicitly stated not to be considered the issuance or sale of securities, significantly enhancing regulatory clarity.