Does Kaspa delete its own transaction history?

No — Kaspa is not deleting history; it is building toward a system where history is mathematically proven rather than merely archived. Zero-knowledge proof technology, called ZK opcodes and currently in development, will allow the full historical state to be proven cryptographically without needing to store every block. Under this approach, any transaction's validity can be verified all the way back to genesis without replaying every block — which the source describes as a stronger guarantee than simply keeping old data around, because the proof is mathematical, not just a copy. For a beginner, the practical meaning is that "deletes history" is a mischaracterization: the goal is a provably complete, auditable record that requires less raw storage.