YouTube requires that you go through a mandatory account verification step in order to enable advanced channel settings such as longer videos, monetization, live streaming, and fan funding. This guide will walk you through the steps involved in the verification of a YouTube account.
Connect to your YouTube channel, click on the profile badge displayed at the top right corner and then select Creator Studio. Go to Channel > Status and features:
Click on the Verify button displayed next to your username and then choose a verification method:
You can choose to receive your 6 digit verification code by text message or through an automated voice message. A valid phone number will be required in both cases: