It’s weird, but I tried to get into “hard science fiction” shows like Altered Carbon and The Expanse but they failed to interest me like they have @mbravo and @Pathfinder.
In researching Altered Carbon, I see that it’s based on a Cyberpunk novel.
Hm, I try to tread carefully over here, and not step on any toes, but I think some clarification of terms is in order here...
Hard SF would be a genre of SF that insists on the science part of SF. So: no faster than light travel, no breaking of conservation of mass/energy, no unobtanium, no dropping of random sciencey/technical jargon to hand-wave problems away (like Star Trek does, for example). In that sense I would not count Altered Carbon as hard SF (primarily the whole 'stacks' tech - although I admit I haven't read the books, there might be attempts to explain the basis for it - TV series certainly didn't delve into it). The Expanse - yes, that is Hard SF, and pretty apparent in the TV series itself (space battles are a joy to watch for physics literate, for example). Pretty much any Neil Stephenson book is hard SF (Seveneves being the prime example, I'd say).
Cyberpunk is somewhat orthogonal to the whole hard/soft SF axis. IMHO, cyberpunk is best characterised by the line from Burning Chrome: "the street finds its own uses for things" (i.e. technology). Meaning that unlike much of the early SF where technologies exist in and of themselves, cyberpunk tries to imagine what would the second order, unintended consequences of technology be. Especially, how will it impact and be used by the people on the fringe of society? One example Gibson himself frequently uses: you can invent instant communication devices (pagers), but the cyberpunk thing is to realise that it will transform the way drug trade operates.