scale.fun

scale.fun connects AI Labs needing labeled training data with a global, crypto-incentivized workforce on mobile.

📱 AI Labs upload raw datasets (images, audio, text) and set bounties in cUSD. Workers complete micro-labeling tasks on their phones through MiniPay and get paid instantly. All labeled datasets are stored on Filecoin and sold on our decentralized marketplace.

Key features: 🔐 ZK-verified identity via Self Protocol (age/country verification for region-specific data labeling) 💰 Instant cUSD micropayments on Celo for each completed annotation 📦 Filecoin storage for immutable dataset archiving 🛒 Decentralized marketplace where AI Labs can buy/sell verified labeled datasets 🌍 Mobile-first design optimized for MiniPay users in emerging markets like Africa, Latin America, India 🇿🇦🇦🇷🇮🇳

This solves the massive bottleneck in AI development: getting high-quality, ethically-sourced training data at scale.

Built as a Celo MiniApp using Next.js 14, optimized for MiniPay mobile wallets in emerging markets.

⚙️ Smart Contracts (Solidity):

• DataAnnotateEscrow: Manages worker bounties and payouts in cUSD
• DatasetMarketplace: Handles dataset sales with 15% platform fee
• Deployed on Celo Mainnet (42220)

📦 Filecoin Integration:

• Synapse SDK for uploading labeled datasets to Filecoin Calibration Testnet
• Fast retrieval API for buyers to download purchased datasets
• Stores both raw files and annotation JSON with content-addressed CIDs
• Background upload queue to handle large dataset batches

🔐 Self Protocol (ZK Verification):

• Zero-knowledge proofs for age/country verification without exposing PII
• Enables task gating for location and age-specific data labeling requirements
• Stored on-chain for trustless verification

🛠️ Tech Stack:

• Frontend: Next.js 14, TailwindCSS, Wagmi/Viem for wallet connections
• Backend: Supabase (PostgreSQL) for user data, annotations, and marketplace listings
• Storage: Filecoin Calibration Testnet via Synapse SDK
• Blockchain: Celo Mainnet (real cUSD payments)

💡 Hacky Bits:

• Mixed testnet/mainnet: Self Protocol on testnet, but marketplace on mainnet
• Background Filecoin uploads: Built queued API for 60-90s uploads
• Mobile-first download: Custom component for MiniPay WebView constraints
• Grouped dataset logic: Multiple files share one on_chain_dataset_id but separate CIDs