Thanks everyone for your prompt replies - it's nice to see people helping people even in this cut-throat world.
So after a full day of ripping my hair out it turns out it was related to my time on my comp. It was 10 mins off and I hadn't noticed. I changed the time to reflect the accurate time, deleted everything in my appdata folder and resynced the chain. Thank f, but it works now. Again, it's much appreciated to have community members AND the dev reach out in such a short amount of time. MN here I come!
Yeah man, you know how do do bro, here to look out for others and beat down the trolls. Glad the issue is fixed, now its time for me to hit the waverunner and grab some sun. I'll see yall later tonight.