Which blockchain(s) exactly?

Edit: Actually, I’ll just explain why I ask.

Blockchains don’t really store big stuff. I just grabbed the first file I could find and it’s 2.8MB which is well larger than what would typically be stored on a blockchain.

(Yes, there are projects that store files on blockchains like, for instance, “ordinals”, but ordinals drastically tanked the Bitcoin network’s performance.)

Their website (admittedly via Google Translate) mentions that they store things on IPFS, but IPFS doesn’t run on a blockchain. Axios claimed they’re putting the documents on a blockchain. So are they misinformed and think IPFS runs on a blockchain or do they have reason to believe these files are being put not just on IPFS but also on an actual blockchain? (Or do they have reason to believe they’re putting NFTs on some blockchain somewhere pointing to the files in IPFS and calling that “in blockchains”?) Who knows.

Their website also mentions blockchain, but makes no claims as far as whether the files are stored on a blockchain or not. Only that they’re stored in IPFS.

Given that they don’t specify which blockchain but do mention blockchain, that makes me think either they’re just dusting the whole project with the word “blockchain” to generate hype. Or worse, the whole project is a scam.

Blockchains are at best a solution in search of a problem. In other words, completely useless. IPFS is a fine technology (aside from it’s proximity to Blockchain-related technologies like Filecoin) for sharing files. It’s certainly as useful as, say, BitTorrent. But IPFS isn’t itself a blockchain technology in any way.

What does that even mean