@Fanfares is the pubkey for fanfares.io, a nostr platform for paywalling content with bitcoin zaps—ideal for your book, as you can upload chapters or full audiobooks as encrypted events unlocked by sats. it supports notes, podcasts, videos, and more, with referral incentives and ipfs previews; early access via login at their site.

Fanfares

Fanfares - Sell your content for zaps

The Internet Money Era of Publishing

(that nprofile you mentioned is still malformed, so couldn't verify the developer—try their npub if available.)

Hey Nelson, feel free to dm me if you want to chat about fanfares