Read together.
Prove it. Get paid.
ZapBook is a mobile reading application where finishing a book earns real bitcoin. Readers read, pass comprehension milestones, and get zapped sats directly from their reading circle. No platform tokens. Real money.
We tell kids reading matters — then reward them with gold stars.
Hollow Rewards
Stickers, pizza coupons, and screen time. Artificial incentives fade the moment the chart fills up.
No Real Proof
Reading logs are pure guesswork. Parents can't easily distinguish pages flipped from pages actually comprehended.
Solitary Journey
Reading is solitary. Kids miss shared goals, social streaks, and the encouragement of a community cheering them on.
Put real stakes behind every page.
ZapBook shifts incentives from hollow badges to tangible savings. Every milestone passed is backed by proof, paid out instantly in bitcoin.
Three steps, one stream.
Read the Book
A distraction-free, beautifully formatted reading screen. Our smart local reading engine tracks active page dwell time, pacing, and micro-interactions to verify genuine reader engagement.
Pass the Milestone
When readers reach a checkpoint, a comprehension quiz is dynamically generated to prove comprehension. (Coming soon: quiz generation runs entirely on-device using a local AI model for offline privacy.)
Get Zapped Sats
Correct answers automatically trigger instant microtransactions (zaps) sent straight to their wallet address via Lightning.
The book is the entire interface.
No ads, badges, or notification noise. Just gorgeous typography, a clean progress indicator, and custom night/day modes tailored to prevent eye strain.
The Lantern Room
The stairs to the lighthouse went up and up, past windows the size of dinner plates, until Wren lost count somewhere around the hundredth step.
"Light only counts if someone is out there to see it."
Proof, not points.
Milestones checks trigger direct device-to-device sats zaps over open Nostr relays instantly. Value flows securely between peers in a reading circle.
Reading is more powerful within a circle.
A circle is simply a Marmot Protocol group—a private, secure space for families, classrooms, or book clubs. Zap each other to encourage reading progress and fuel productivity, tracking progress together trustlessly while keeping all profile data completely offline and secure.
Zap & Support Readers
Encourage reading with gamified milestones, lightning zaps, and a healthy, fun reading competition.
The Ito Circle
4 readersDesigned for social reading and active engagement.
Families
Fund readers' habits, monitor milestones, and encourage real-money savings using lightning zaps.
Book Clubs & Friends
Share accountability streaks, discuss books in encrypted circles, and hit milestone goals as a group.
Study Groups
Co-read literature or study material collaboratively, tracking group progress without data harvesting.
Solo Readers
Anyone who enjoys trackable reading stats, streaks, gamified milestone watch, and local AI check verification.
Built on open-source, peer-to-peer protocols.
Lightning
Instant, low-fee value transfers that make paying micro-amounts (sats) viable for daily reading gains.
Nostr
Decentralized key-pair identities and secure messaging relays. Completely free of corporate walled gardens.
Marmot Protocol
Decentralized end-to-end encrypted (E2EE) group messaging built on MLS (Messaging Layer Security) using Nostr for identity and transport.
On-Device AI (Gemma)
Utilizes an offline Gemma model running locally on the device to generate milestone comprehension checks, preserving privacy and eliminating server dependencies.
Start reading and earning today.
ZapBook is a decentralized, open-source reading application that rewards readers with Bitcoin for completing reading checks. Join us on GitHub to collaborate on building secure reading circles, local AI quiz systems, and E2EE sync protocols.
codeswot / ZapBook
Open-Source Repository
To support the developer community, we published the core components of our architecture as reusable packages on pub.dev.