SB1125 is a bill that aims to establish age verification requirements for commercial entities distributing material harmful to minors on the internet. The bill mandates that any commercial entity that knowingly publishes or distributes such material on a website with a substantial portion (more than 33.33%) of harmful content must verify that users attempting to access the material are at least 18 years old. Age verification can be done by comparing the user's internet protocol (IP) address with blacklists or through other commercially reasonable methods.

The bill also allows parents to request their internet service provider to add or remove their IP addresses from a blacklist, with no obligation for the provider to confirm the presence of a minor child. Commercial entities that fail to comply with the age verification requirement will be subject to civil liability for damages resulting from a minor's access to harmful material, including attorney fees and costs. The bill clarifies that it does not impose obligations or liabilities on providers or users of interactive computer services on the internet. Definitions for terms such as "interactive computer service," "internet," and "material harmful to minors" are included in the bill.