Thanks for the lesson professor @yousafharoonkhan, I have learned a lot from this. Here is my homework entry
https://steemit.com/hive-108451/@acbaby/steemit-crypto-academy-season4-beginners-course-homework-post-for-task-4-blockchain-decentralization-block-explorer-by-acbaby

I wish to meet your lectures again as I continue to learn in cryptoacademy