

https://self.xyz/
Twitter: https://x.com/SelfProtocol
Launched in early 2025 by former Celo core contributors at Self Labs, Self Protocol is a blockchain-based identity verification system
It leverages zero-knowledge proofs (ZKPs) for privacy-preserving verification, allowing users to prove attributes like age, location, or humanity without revealing personal data, addressing Sybil attacks, regulatory compliance, and onboarding friction
As of November 2025, Self Protocol has over 7M global users through Self Pass and Self Connect, enabling token airdrops, DeFi access, and KYC in 174+ countries using e-passport NFC technology
The protocol is open-source, developer-friendly via SDKs, and partnered with Aave, VelodromeFi, and Google Cloud
Endorsed by the Ethereum Foundation, Self Protocol has launched a ZK residency program for developers
Key milestones include the acquisition of OpenPassport and the beta launch for Sybil-resistant distributions
Web3 dApps face persistent challenges such as fair token distribution, regulatory compliance, and proof-of-humanity, while traditional KYC solutions expose user data to breaches and erode trust
Self Protocol addresses these issues by verifying identities off-chain while generating on-chain proofs, advancing self-sovereign identity (SSI) where users control their own data
Self Pass: A Sybil-resistant verification system for attributes (e.g., age, country, non-sanctioned status); generates ZKPs from ID scans (no selfies/KYC uploads), prevents duplicate airdrop claims, and ensures proof-of-humanity for anti-bot protection
Self Connect: Links phone numbers to wallet addresses for seamless onboarding; enables stablecoin transactions via verified phones while removing blockchain entry barriers such as seed phrases
Self SDK: A developer toolkit for ZK-based, privacy-preserving ID verification, enabling seamless on-chain checks (age, location, humanity) via NFC passport scans
How It Works:
Verification: Users scan their passport or ID via the Self app to derive minimal claims like “age > 18.”
ZK Proof Generation: Creates zero-knowledge proofs attesting to claims without exposing personal data.
On-chain Binding: Proofs link to the user’s wallet, allowing apps to verify compliance with a simple yes/no outcome via the SDK.
Example Flow: Phone reads ID → ZK proof of compliance → app receives binary outcome (compliant/non-compliant).
Extensibility: NFC-enabled passports ensure high accuracy; multi-wallet support and encrypted seed phrase recovery are supported (e.g., via BackupBuddy).
Token Airdrops: Sybil-resistant distributions; verifies uniqueness without exposing data, reducing fraud and enabling fair allocations.
DeFi Onboarding: Geo/age gating for lending or yield farming, enabling compliant access.
Payments & Stablecoins: ZK proofs for global transfers; phone-to-wallet linking enables frictionless remittances without KYC custody.
Events & NFTs: Age/region verification for mints or check-ins; scalable, privacy-preserving ticketing.
Proof-of-Humanity: Anti-AI agent measures; links real IDs to secure DAOs and voting against bots.
Self Protocol: A comprehensive on-chain identity layer for DeFi, NFTs, and the broader crypto ecosystem
Humanity: Specializes in human identity verification to prevent bots in communities
Similarities:
Use ZKPs for privacy-preserving verification
Aim to prevent Sybil attacks
Decentralized verification reduces single-point control
Differences:
Primary Use:
Self Protocol - General on-chain identity verification for DeFi, NFTs, and more
Humanity - Human verification for bots prevention
Verification Scope:
Self Protocol - Multiple attributes: age, location, humanity, etc.
Humanity - Only human identity
Use Cases:
Self Protocol - Sybil prevention, compliance, onboarding
Humanity - Prevent bots in votes, airdrops, communities
Product Positioning:
Self Protocol - Enterprise-grade, multi-functional
Humanity - Focused on social/DAO/community verification
Founded by ex-Celo core contributors with a focus on mobile-first blockchain accessibility
Eric Nakagawa (CEO): Blockchain veteran focused on privacy in on-chain applications
Marek Olszewski (Co-founder, cLabs CEO): Leads Celo integrations; background at MIT, Microsoft, Google
Team includes ZK experts from OpenPassport acquisition, emphasizing open-source development
Funding: Ethereum Foundation grants; recently raised private capital (details undisclosed)
Adoption Barriers: Requires NFC-enabled devices; limited to passport-supporting countries
Security Gaps: Lacks 2FA, potential risk of ID spoofing
Scalability: ZK proof generation can be compute-intensive; relies on Celo for on-chain efficiency
Regulatory Fit: Balances privacy with compliance; may face scrutiny in high-KYC regions
Poised for growth in the 2025–2026 privacy tech boom
Future $SELF token could incentivize verifiers and issuers; no native token exists yet
Rising AI Sybil attacks are driving proof-of-humanity demand, expected to exceed 20M users by 2026
Ecosystem expansion: deeper Ethereum and Celo integration, with potential Cosmos IBC for cross-chain support
Roadmap includes multi-wallet support, AI-resistant proofs, and expanded SDKs for L2s
In a post-FTX world, Self Protocol enables trustless, verifiable infrastructure for a privacy-first digital economy
Chung
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