North Star Metric: EARPUD — Earned Attention Revenue per User per Day
Product Architecture
PUBLIC
Full-stack platform built from scratch: social media, encrypted messaging, self-custody wallet, card payments, and an attention marketplace
12
Product Modules
9
Backend Engines
6
Smart Contracts
~142K
Lines of Code
Product Modules
Paid Attention MarketplaceBuilt
Users set their own price for watching verified brand content. Atomic USDC settlement via Solana smart contracts. Advertiser pays directly to user's self-custody wallet.
Paid Messenger (MonAtt)Built
Encrypted P2P messaging with paid DMs. Users set their price for incoming messages from non-contacts. 20% platform commission.
Social Feed & DiscoveryBuilt
Dual-mode feed: Friends (follow graph) and Interest (algorithmic). Posts, comments, reactions, sharing. Content-first social experience.
Stories & ReelsBuilt
Short-form video content with TikTok-style algorithmic discovery. Paid Attention ads integrated into Reels feed. Creator-first content tools.
Creator ProgramBuilt
4-tier system: Regular → Creator → Ambassador → Founding Creator. Multi-level earnings from Paid Attention, Messenger, and card interchange.
Star SystemBuilt
Follower-directed creator revenue sharing. Each user has 5 stars to allocate to creators. Separate earning stream from referrals, fully stackable.
AlemX CardBuilt
Free virtual debit card. Bridge (Stripe) for US/Canada/EU, WasabiCard for global coverage. Apple Pay and Google Pay. No issuance fee.
Self-Custody WalletBuilt
Crossmint smart wallets on Solana. USDC-native. No KYC for basic use. Fiat onramp. Non-custodial: AlemX never holds user keys.
Identity & VerificationBuilt
WebAuthn/Passkey authentication. $9.90 one-time identity verification gate for card activation. Green circle verified badge system.
Sara AI AssistantBuilt
In-app AI powered by Claude Haiku. Separate advertiser reporting module with 3-layer architecture: Report Service, template engine, narrative generation.
AlemX GiftBuilt
Standalone immutable Anchor program on Solana. Send USDC to anyone via link, even unregistered users. On-chain escrow with automatic claim.
3-Layer AI ModerationBuilt
Automated content moderation pipeline with semantic analysis. Probation pool for new ads. Escalation tiers with human review layer.
Backend Engines
Settlement Engine
Atomic USDC settlement on Solana. Branches by transaction type (PA, Messenger, Card). Real-time 75/20/5 commission splitting.
Voucher Signing
Ed25519 voucher verification with Receipt PDAs. On-chain replay protection for every paid view.
CV Proof of Attention
On-device camera presence check during paid views. No facial recognition, no biometric data stored or transmitted.
Campaign PDA Manager
On-chain campaign lifecycle. Advertiser funds held in program-derived accounts. Budget tracking and completion verification.
Semantic Ad Targeting
Interest-based ad matching engine. Connects user attention supply with advertiser demand by content semantics.
Feed Algorithm
Dual-mode ranking for Friends and Interest feeds. Engagement signals with time-decay functions and content diversity.
Notification Engine
Multi-channel delivery: push notifications, SMS, and email. Event-driven architecture with user preference controls.
Analytics / EARPUD
North Star metric tracking: Earned Attention Revenue Per User Per Day. Cross-stream analytics across all revenue sources.
Sara Advertiser Reports
3-layer reporting for advertisers: Report Service collects data, template engine structures it, Claude Haiku generates narrative insights.