Why does Kaspa prune old block data?

Kaspa deliberately removes redundant block data through a process called pruning — this is an intentional engineering decision, not an attempt to erase history. Pruning keeps the network lean by discarding block data that is no longer needed to verify the chain's integrity. Importantly, the pruning algorithm has a formal security proof published in a peer-reviewed paper on the IACR ePrint Archive (2021/623), meaning independent cryptographers reviewed and validated the approach. For a beginner, this matters because it means the safety of Kaspa's pruning is a mathematical guarantee that anyone can audit — not a trust-me claim from the development team.