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Title: Blockchain without PoW == Git repositary Post by: Perlover on October 27, 2016, 11:32:56 AM 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! Title: Re: Blockchain without PoW == Git repositary Post by: shorena on November 02, 2016, 08:36:34 PM Proof of work is what makes the blockchain so special, without its just a database, correct.
Title: Re: Blockchain without PoW == Git repositary Post by: pepethefrog on November 03, 2016, 07:51:55 AM Also, it's called "repository", not "repositary"
Title: Re: Blockchain without PoW == Git repositary Post by: pepethefrog on November 03, 2016, 07:52:57 AM BTW, just because something is distributed doesn't mean that it is decentralized.
Those are different things. |