user124633: Hi I tried hashing a already mined block with this block header 04E0FF37f09be87b288284c8e93a04fff7b4ac9b72178c2e6b4e0a00000000000000000035788eca05bccfaede03db9cb6276e9f7c125687b9321939755f03d73f15bd25C4F2EE60CE9813175230D962 of this block and I hashed it two times but the output zero are at end of the hash. b11f24d772b9fee7132b62e0bd17fefa76d29848e6930c000000000000000000
How does it work

user24925: You’re falling afoul of endianness. To promote equality, Satoshi sought to use Big Endian representation for hashes in Bitcoin, which have the byte order the opposite of what you are producing.

124633: <p>Hi I tried hashing a already mined block with this block header 04E0FF37f09be87b288284c8e93a04fff7b4ac9b72178c2e6b4e0a00000000000000000035788eca05bccfaede03db9cb6276e9f7c125687b9321939755f03d73f15bd25C4F2EE60CE9813175230D962 <a href="https://blockchain.info/block-height/691000" rel="nofollow noreferrer">of this block</a> and I hashed it two times but the output zero are at end of the hash. b11f24d772b9fee7132b62e0bd17fefa76d29848e6930c000000000000000000</p>
<p>How does it work</p>
 24925: <p>You’re falling afoul of <a href="https://en.wikipedia.org/wiki/Endianness" rel="nofollow noreferrer">endianness</a>. To promote equality, Satoshi sought to use Big Endian representation for hashes in Bitcoin, which have the byte order the opposite of what you are producing.</p>
