Hi Everyone
i'm a niewbie and i was so confused about how the blocks work and Function in Bitcoin blockchain ive many questions and i want if someone here has a good knowledge in blockchain to answer my questions ?
1- is the blocks can only contains one transaction or more ?
2- we know that the miners doing calculation through POW ? is it the same calculation of the hash tx ?
3- is the block that is created by a miner doesnt valide untill it is validated by all the miners in the network ? is that correct ? and how it is considered as a valide block ?
4- is every miner considered as Node in Bitcoin Network ?