Are there older catchpoint files available anywhere?

Hi,

I’d like to sync my light-ish algod node from block ~18M onwards. Is there a public list of older catchpoints available? I assume that if I used the catchup to around 18M it would then sync onwards to “now”.

Thanks!

As it stands non-archival algod-s only retain the last 1000 blocks, so my idea of having an algod with blocks from 18M until now seems invalid. I’m asking here if this 1000 block value if configurable