1. Sites like https://nft.storage/ (which I dislike as they have a silly bug with content types) or Pinata also go to IPFS. Just because the https URL doesn't look like a well known IPFS HTTP gateway doesn't mean it's not on IPFS.
2. Good point. I haven't investigated this but I should.
> Put simply, ~10% of NFTs are on-chain, ~40% of NFTs are on private servers and are doomed, and ~50% remaining are on IPFS.
40% is the doomed figure. Which is way too high but there’s a lot of idiots minting shitty NFTs. Since the study wasn’t limited to NFTs on marketplaces (like we’re discussing here) that doesn’t surprise me.
if the data you’ve pinned to IPFS is not accessed within the 6 month period, our garbage collecting system will delete the data. In order to keep data around indefinitely, you will need to access it somehow at least every 6 months.