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Arguably, git is a blockchain, albeit one with a very weak (non-existant?) consensus model.

• zaarn 9y ago
  Git's consensus model is not weak or non-existant it's just not like Bitcoins. Rather, in Git's version a single person or group decides what the truth is and everyone follows that (or forks). It's human/social consensus. It can be as strong or stronger than bitcoin since any issues or conflicts are resolved to satisfaction in meatspace. Bitcoin Core and Bitcoin Cash are two forks of Bitcoin and nobody seems to be able to decide which is the proper one, people argue back and forth. Meanwhile in the repositories of both chains, people happily submit changes and commit them under the watch of the lead developers who control and check what goes in, rejecting harmful or bad merge requests, etc.
• lowry 9y ago
  Looking at the name... blockchain or chain of blocks... or a queue in CompSci speak... is less complex than git. Git is a directed acyclic graph.
  • subway 9y ago
    That kind of breaks down if you consider existing chains have forked. See Ethereum vs Ethereum Classic or Bitcoin vs Bitcoin Cash as examples. Git, Bitcoin, Ethereum, and Certificate Transparency logs are all examples of merkle trees (and argubly blockchains).
• mbrock 9y ago
  There is kind of a consensus model: the fork with the most good work on it is the real one. If you come across a forest of different forks of Ruby On Rails, you can identify the project's main master by looking for the longest sequence of commits by known project participants...