Integrating Self Hands on Smart Contract SDK Workshop I Ayman Mohammed

Ayman Mohammed leads a hands-on workshop on Self, a privacy-preserving identity protocol for Sybil resistance and selective disclosure. Learn how Self keeps PII out of centralized databases by storing data only on the user’s device, then proves facts with ZK proofs (age ≥ 18, not in forbidden countries, OFAC checks) without revealing raw data. The session covers the front-end QR/deeplink flow, TEEs for proof generation, on-chain SDK (Solidity) and off-chain SDK (TypeScript/Go), setting verification configs (scope, minimum age, excluded countries), deriving a scope seed, and wiring contracts (constructor with Hub, custom verification hook, setScope). Ayman also demos Aadhaar support plans, passport MRZ/NFC flows, mock documents, failure paths, and bounty tiers for on-chain and off-chain integrations. 00:11 Introduction 00:50 Why Self: no centralized PII storage 01:28 Sybil resistance via passports/IDs 02:19 Selective disclosure: attributes & ranges 03:14 Proving “over 18” & country exclusions 03:42 OFAC privacy-safe compliance checks 04:32 Adoption data & upcoming Aadhaar support 04:57 How Self works: MRZ/NFC & commitments 05:55 Aadhaar QR flow & commitments 06:21 Disclosure proofs & on-chain tree 06:47 One-person/one-nullifier model 07:28 Integrator flow: QR/deeplink to app 08:03 TEE attestation & ZK proof pipeline 08:40 SDK options: on-chain vs off-chain 09:11 Workshop repo layout (app & contracts) 10:29 Front-end QR SDK & disclosure config 12:05 Minimum age & excluded countries example 14:09 Contracts overview (ProofOfHuman) 15:00 VerificationConfig & config ID 16:41 Custom verification hook usage 18:12 Deploy script & constraints match 20:04 Scope seed derivation & setScope 21:09 Live QR scan & successful proof 24:02 US doc mock: proof blocked demo 25:21 Tools.self.xyz for scope generation 26:54 Off-chain verifier quick start 29:15 Bounties, docs, and closing _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 🇮🇳 *ETHGlobal New Delhi* This workshop is specifically for ETHGlobal New Delhi, a 3-day hackathon held September 19-21 at the India International Convention & Expo Centre, bringing together the most skilled web3 developers, designers and product builders from all around the globe for a weekend-long adventure to advance the Ethereum ecosystem! Watch the full ETHGlobal New Delhi 2025 playlist here: https://www.youtube.com/playlist?list=PLXzKMXK2aHh7zCFW3hBqatZ18rQaYeEJL _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ✅ *Follow Self* X: https://x.com/SelfProtocol ✅ *Follow ETHGlobal* X: https://x.com/ETHGlobal​ Warpcast: https://warpcast.com/ethglobal Website: https://ethglobal.com YouTube: https://www.youtube.com/c/ETHGlobal _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _Are you interested in Ethereum development and entrepreneurship?_ 👉 Sign up for the next ETHGlobal event: https://ethglobal.com/events 🎁 Get exclusive access and perks with ETHGlobal Plus! https://ethglobal.com/plus 📣 Want us to throw an event in your city? Tell us where! https://ethglobal.com/city