What are DAG tips in Kaspa?

DAG tips are blocks that no other block has yet referenced — the current frontier of Kaspa's block graph. When a miner creates a new block, it looks for these tip blocks and selects them as parents. Once a tip is referenced by a newer block, it is no longer a tip, and the DAG advances. Tips matter to beginners because they illustrate how Kaspa grows outward in multiple directions at once rather than extending a single chain one block at a time.