How Blockchain works


 Example
SHA256 one way hash function )




Input the any text in to the A block so that the output starts with zero.

A.


copy output text in A block and insert in to the B Block. you must add new symbols, 
for generate new text with a double zero in front of.

B.

copy output text in B block and insert in to the C Block. you must add new symbols, 
for generate new text with a double zero in front of.

C.


Blockchain works like this example , 
Miner solves a problem with a large number of zeros