That's what I was thinking until I looked into it.
It's unclear who handles it.
If it's the Treasury or Department of Revenue. Or both.
For all Coinbase accounts they only list a single account based on Sacramento. So I'm not sure how my account got linked to Colorado and yet unclaimed. Or how they claimed a Sacramento account in Colorado.
They do this for BlockFi too. I figure if I can't get them to find my Coinbase I can at least do the process there.
They returned like $1 billion in unclaimed property, but I suspect they retain a lot more in the process.