Full text from the SEC: Some Staking in PoS networks are not securities and do not require sign up.
Source: U.S. SEC Division of Corporation Finance; Translated by AIMan@Golden Finance
Introduction
In an effort to provide greater clarity on the applicability of federal securities laws to cryptoassets, [1] U.S. Department of Corporate Finance (DFI) is working on certain networks that use proof-of-stake (PoS) as a consensus mechanism ("PoS Networks") ) in activities known as "staking" [2]. Specifically, this Notice addresses the staking of crypto assets intrinsically linked to the programmatic operation of public, permissionless networks that are used to participate in and/or be obtained as a result of participation in the consensus mechanisms of such networks, or for maintaining the technical operation and security of such networks and/or for maintaining the technical operation and security of such networks. In this statement, we refer to these crypto assets as "Covered Crypto Assets" [3] and refer to: