Changing block's data also changes next block's previous hash
AkashKarnatak opened this issue · comments
If I tamper block 4's data then it's hash will change. But why does block 5's previous hash gets affected?
I expect it to remain the same like so.
This is expected behavior. The previous hash is calculated from the previous block, not something set by that block. If it doesn't change then there is no integrity guarantee being established and the usefulness of a blockchain disappears.