I have a memory of getting a single free Bitcoin YEARS ago as a promotional thing for opening an account.
Does anyone remember anything of this nature, likely dating back to the very early years, maybe 2009/2010'ish?
Any idea as to whether it would still be available and how to access it?
Any insight appreciated
If you didn't transfer it to some kind of wallet (online or offline), then don't get your hope too high, Many early BTC website closed, or changed their ratio since then, so even if you manage to find I think your claim will result in a few satoshis at best.
Keep looking since the prize is worth the effort, but just keep in mind that there is a good chance you won't get paid sadly