It will solve the spam problem and likely solve another major issue that will definitely grow with generative video: the deepfake problem. The timechain aspect of the blockchain can guarantee that a photo or a video, when hashed and stored as e.g. in an OP_RETURN in a transaction guarantees that that video or photo was taken no later than that point in time. We will see timchain datestamps used as a irrefutable evidence in numerous situations. The immutability of the timechain is a fascinating structure we now have that opens up new use cases and areas of research.