Well the commits are proof-of-work; though the validation is done by human (assuming the user doesn't have commit access on the main branch) However its more o

Well the commits are proof-of-work; though the validation is done by human (assuming the user doesn't have commit access on the main branch) However its more of a Merkle tree https://en.wikipedia.org/wiki/Merkle_tree; https://en.wikipedia.org/wiki/Merkle_tree; which blockchain is also.