If you tripfag you basically have the functionality of NFTs
You have multiple archive sites archiving the same threads so you need to compromise all of them to change history, making it reliable and immutable
By looking at archives you can prove you were the first to post an image and thus 'own' it, and can also post your 'transactions' in the form of a post where you grant it to another tripfag, which they can then cite to prove ownership
Discard blockchain, embrace archives