Block propagation timing for one ~4.5 h collection window on Bitcoin, Litecoin, ...
https://dataforge-propagation.dataforge-labs.workers.dev/v1/blocks/:networkOverview
Block propagation timing for one ~4.5 h collection window on Bitcoin, Litecoin, Dogecoin or Bitcoin Cash: when each block was first seen and how many seconds later the other connected peers announced it (p50, p90, max). One observation point, a few dozen peers; not reconstructable from on-chain data. Historical, not real-time.