...
Eosnation — supports them. Plugin that exports table deltas, and can be indexed.
State State history is good cuz it does an archive file you can read at your own pace or parallelize. Defuse kind of blocks and holds up processing. Where the archive file processing does not do this.
Biggest challenge of this effort is validity of the data stored in the off chain database.
Demux Is is kind of stalled somehow — earlier version of demux was reading blocks, they added state history processing but its nobody’s child, and and has not been updated in a long while, its a project kind of not owned by anyone. There is Hyperion, and a database reflecting NFT history, in a Postgres database.
...