What exactly is a hash, and why can’t blockchain do without it? Don’t worry, here’s the class rep with a quick summary:
The same input always produces the same hash. Even changing just one character in the input will make the output completely different.
The block header stores the hash of the previous block. Changing any historical block changes its hash, so none of the blocks that follow will match anymore.
My notes are packed with useful insights, and my account is full of lessons learned the hard way.
$BTC 77195.27（-5.08%）
#BTC
The same input always produces the same hash. Even changing just one character in the input will make the output completely different.
The block header stores the hash of the previous block. Changing any historical block changes its hash, so none of the blocks that follow will match anymore.
My notes are packed with useful insights, and my account is full of lessons learned the hard way.
$BTC 77195.27（-5.08%）
#BTC