Happy to collab or learn about your use case. What subset of Nostr notes specifically would be enabling for your filter training?

Thank you, Bob! Anything that: - is a Kind-1984, or - is the note reported in a Kind-1984 The idea being that client apps can train their own filter models, or at least a marketplace of data vending machines can build them on demand. Two-tiered access to your archive could work, free access to last month's data, maybe, and paid access to everything...