What characterizes a blank endorsement?

A blank endorsement is characterized by the endorser's signature alone, without any additional text or instructions. This type of endorsement allows the check to be cashed or deposited by anyone who possesses it, as it does not designate a specific payee. The simplicity of just the signature makes it versatile but also allows for a certain level of risk, since whoever holds the endorsed check can negotiate it.

The other options involve specific terms or conditions that do not apply to a blank endorsement. For instance, including the phrase "for deposit only" would create a restrictive endorsement, and instructions or specified amounts would also limit how the check can be processed. Thus, a blank endorsement is distinct in its lack of stipulation beyond the signature itself.