I'm not sure what there is to verify by an AI. It boils down to whether you trust the person who archived the content that they didn't make any modification before archiving. The same trust is required if an AI does the archiving or performs whatever checks.

If there are multiple independent parties verifying that the contents of the link match what was archived, then you have a more decentralized mechanism for verification. It could be feasible for like 50 or 100 nodes to participate in such a verification, the nodes would be pretty lightweight.