I hope this is okay: I made a backup of the blog post and saved it to my website/file hosting site. here is the backup.
I’ll remove/blank out this comment when/if I see the page come back online.
EDIT: Okay, so it looks like the OpenOrca project on Eric Hartford’s website has been rebranded as Dolphin. My understanding is that someone else is working on an OpenOrca, prompting the rebranding.
It looks like it! :) https://huggingface.co/datasets/Open-Orca/OpenOrca