How to decode the block hash? I got the block hash from zmq.

00000000000000000045c639280aee532c5b12b03c80bfdec7aae674fd8246e0


I want to decode the above block hash. Could anyone tell me how to decode the above block hash?
What do you mean by "decode"?

A hash algorithm is a one-way function.

The hash-function takes some block header information (timestamp, nonce, a hash of all transactions) and returns such a hexadecimal value. There is no way to "decode" such a hash.

Its reason is just to identify a unique block (and deciding wheather someone gets the block reward or not). There are no other information stored in 00000000000000000045c639280aee532c5b12b03c80bfdec7aae674fd8246e0



But if you have the blockchain on your PC or if you enter the block hash at a block explorer, you can get information about that specific block: https://blockchain.info/block-index/1696955/00000000000000000045c639280aee532c5b12b03c80bfdec7aae674fd8246e0