I lost source codes of my C Linux elf executable and domain binder license i previously compiled

WARNING: I got ripped here few days ago asking for payment and not delivered the project. If you can show me a [login to view URL] license example for ip [login to view URL] you will get paid. Project below: Hi, this is a rather old build executable but it runs on centos 5 64 bit still, i lost the source codes of it a few years back, it was build in 2003, the spvng run with [login to view URL] binding to a domain, it was an experimental newsletter software program for linux i've build, i attached the executable code, if you have any experience in retrieving how my program worked in the past for generating a key for a domain i lost all codes because it's an old program, thanks Please start work if you can do this. i need to recover this asap