Blockchain based tracking of config file changes. Nice programs for learning and understanding blockchain concepts. It would be used to implement file based change monitoring with only authorized users allowed to modify. If any other user modifies, the block chain would reveal the contamination in the config file.
This works on AIX/Linux ppc.
./blkchn_modify /etc/someconfig ram hostprod
Make the changes to the file, save and exit
It would display the diff and the block added with hash,signature and other details.
You can make multiple edit using the above command and each time a new block gets added. The block contains the diff with integrity of the diff.
./blkchn_verify someconfig.meta someconfig
It will verify each block for current to prev hash, signature with user's private key.