Blockchain without PoW == Git repositary

[Perlover]

Hi,

I often listen that blockchain will change world
But 99% who tells it - they don't tell that analog of blockchain exists before Bitcoin - it's Git repositary

Commit ==> Hash of files in commit - it's like block and merkle root
Commits are chained in chain of commit == blockchain w/o PoW (Proof-of-Work)
The master branch for example it looks like main chain of bitcoin
If you change something in commit - you change all hashes of current commit and all commits after

So 'git clone' - it's like start and downloading a full node.

So Git is first blockchain without PoW only in manually distributed mode

And may be it will be interesting too
https://en.wikipedia.org/wiki/Kernel.org#2011_attack

And

"Git calculates a cryptographically secure SHA-1 hash for each of the nearly 40,000 files that make up the Linux kernel. The name of each version of the kernel depends on the complete development history leading up to that version, and once it is published, it's not possible to change the old versions without someone noticing. Any changes to the source code would be noticed by anyone updating their personal copy of the code, according to the site's security notification. "

from: http://archive.is/Khq7R


Bye!

[shorena]

Proof of work is what makes the blockchain so special, without its just a database, correct.

[pepethefrog]

Also, it's called "repository", not "repositary"

[pepethefrog]

BTW, just because something is distributed doesn't mean that it is decentralized.

Those are different things.