How does Kaspa avoid flooding the global network with low-value blocks?

When a block needs to travel between distant geographic regions, Kaspa applies intelligent filtering based on blue work thresholds before relaying it further. A blue work threshold is a score that estimates how likely a block is to be accepted into the main chain — blocks that fall below the threshold are held back rather than transmitted across expensive inter-region links. This keeps unnecessary traffic off the network backbone. For a beginner, the takeaway is that Kaspa is designed to be bandwidth-efficient: only blocks with a realistic chance of being included in consensus get propagated globally.