RE: Learn by Interacting with Hash, Blocks, and Blockchain + get 100SP delegated for insightful comments

You are viewing a single comment's thread from:

Learn by Interacting with Hash, Blocks, and Blockchain + get 100SP delegated for insightful comments

in bitcoin •  7 years ago 

I would like to add the point that it's easy to find the SHA256 hash but it's very difficult / impossible to find the original string from the hash. Through this mechanism and the proof of work algorithm makes Blockchain a Blockchain. They are secure cyptographically, Not everyone can add a block (like Git) and the blocks are immutable because if you change a block, it would create a new branch and you would need to mine faster than all the miners on earth and keep on increasing the length of the branch to stop it from getting rejected which is impossible. No one has such computing power.

Authors get paid when people like you upvote their post.
If you enjoyed what you read here, create your account today and start earning FREE STEEM!
Sort Order:  

yep, which is why pow is really valuable